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포타슘하이드록사이드또는 소듐하이드록사이드

Listed by the Korean MFDS as a cosmetic ingredient requiring conditions of use.

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Regulatory decision and full conditions

Status
Restricted
Legal role
Binding rule
Regulatory summary
Listed by the Korean MFDS as a cosmetic ingredient requiring conditions of use.
Conditions and restrictions
?손톱표피 용해 목적일 경우 5%, pH 조정 목적으로 사용되고 최종 제품이 제5조제5항 에 pH기준이 정하여 있지 아니한 경우에도 최종 제품의 pH는 11이하 ?제모제에서 pH조정 목적으로 사용되는 경우 최종 제품의 pH는 12.7이하 · 포타슘하이드록사이드소듐하이드록사이드

Substance identity

Official source name
포타슘하이드록사이드또는 소듐하이드록사이드
CAS
1310-58-3; 1310-73-2
EC
215-181-3
Identity mapping
cas_number
Linked ingredient
POTASSIUM HYDROXIDE
Search this identity across the siteCAS 1310-58-3CAS 1310-73-2EC 215-181-3

Linked CosIng identity data

Names and aliases

POTASSIUM HYDROXIDEpotassium hydroxidekalii hydroxidum

CosIng description: Potassium hydroxide

EU inventory restriction note: III/15a, 15d

Recorded cosmetic function: BUFFERING

Function pages:BUFFERING

View the complete ingredient profile

Cross-market snapshot for this identity

Exact linked records currently present in this site. An absent market means no imported exact match, not permission to use the substance.

7 market datasets
PubChem 2D chemical structure for CAS 1310-58-3
CAS 1310-58-3PubChem CID 14797

Verified chemistry for CAS 1310-58-3

Potassium Hydroxide

Potassium hydroxide is an alkali metal hydroxide. — ChEBI

IUPAC name
potassium hydroxide
Molecular formula
HKO
Molecular weight
56.106 g/mol
Exact mass
55.96644614 Da
Monoisotopic mass
55.96644614 Da
Topological polar surface area
1.0 Ų
Molecular complexity
2.0
Formal charge
0
Hydrogen-bond donors
1
Hydrogen-bond acceptors
1
Rotatable bonds
0
Heavy atoms
2
Covalent units
2

Names and synonyms reported to PubChem

Caustic potashPotash lyePotassium hydrateHydroxyde de potassiumPotassaPotasse caustiqueCaustic-potashKali causticum
16 more reported names
Caswell No. 693Cyantek CC 723Potassium hydroxide (K(OH))KaliumhydroxidCCRIS 6569Potassio (idrossido di)Potassium (hydroxyde de)WZH3C48M4TEPA Pesticide Chemical Code 075602INS NO.525INS-525E-525CHEBI:32035KaliumhydroxydeRefChem:6672MIRACLE WATER 3 in 1
Open full PubChem recordSafety and hazards at PubChemPubChem annotationsChemical classifications3D structure image
External database identifiers
Advanced structure statistics
Defined atom stereocentres
0
Undefined atom stereocentres
0
Defined bond stereocentres
0
Undefined bond stereocentres
0
3D conformers
0
Machine-readable structure identifiers
SMILES
[OH-].[K+]
InChI
InChI=1S/K.H2O/h;1H2/q+1;/p-1
InChIKey
KWYUFKZDYYNOTN-UHFFFAOYSA-M

Evidence from additional scientific databases

NIH PubChem PUG-View
Exact identifier match14797

Attributed physical-property, hazard, environmental and use annotations.

  • Autoignition Temperature: Not flammable (USCG, 1999) Source: CAMEO Chemicals
  • First Aid: (Act quickly]); EYES: flush with water for at least 15 min.; SKIN: flush with water, then rinse with dilute vinegar (acetic acid).; INGESTION: give water and milk. Do NOT induce vomiting. Call physician at once, even when injury seems to be slight. (USCG, 1999) Source: CAMEO Chemicals
  • First Aid: EYES: First check the victim for contact lenses and remove if present. Flush victim's eyes with water or normal saline solution for 20 to 30 minutes while simultaneously calling a hospital or poison control center. Do not put any ointments, oils, or medication in the victim's eyes without specific instructions from a physician. IMMEDIATELY transport the victim after flushing eyes to a hospital even if no symptoms (such as redness or irritation) develop.; SKIN: IMMEDIATELY flood affected skin with water while removing and isolating all contaminated clothing. Gently wash all affected skin areas thoroughly with soap and water. IMMEDIATELY call a hospital or poison control center even if no symptoms (such as redness or irritation) develop. IMMEDIATELY transport the victim to a hospital for treatment after washing the affected areas.; INHALATION: IMMEDIATELY leave the contaminated area; take deep breaths of fresh air. If symptoms (such as wheezing, coughing, shortness of breath, or burning in the mouth, throat, or chest) develop, call a physician and be prepared to transport the victim to a hospital. Provide proper respiratory protection to rescuers entering an unknown atmosphere. Whene Source: CAMEO Chemicals
  • ERG2024, Guide 154 (Potassium hydroxide, solution; Potassium hydroxide, solid): General First Aid:; · Call 911 or emergency medical service.; · Ensure that medical personnel are aware of the material(s) involved, take precautions to protect themselves and avoid contamination.; · Move victim to fresh air if it can be done safely.; · Administer oxygen if breathing is difficult.; · If victim is not breathing:; -- DO NOT perform mouth-to-mouth resuscitation; the victim may have ingested or inhaled the substance.; -- If equipped and pulse detected, wash face and mouth, then give artificial respiration using a proper respiratory medical device (bag-valve mask, pocket mask equipped with a one-way valve or other device).; -- If no pulse detected or no respiratory medical device available, provide continuous compressions. Conduct a pulse check every two minutes or monitor for any signs of spontaneous respirations.; · Remove and isolate contaminated clothing and shoes.; · For minor skin contact, avoid spreading material on unaffected skin.; · In case of contact with substance, remove immediately by flushing skin or eyes with running water for at least 20 minutes.; · For severe burns, immediate medical attention is required.; · Effects of exposure (inhalation, ingestion, Source: Emergency Response Guidebook (ERG)
  • ERG2024, Guide 154 (Potassium hydroxide, solid; Potassium hydroxide, solution): General First Aid:; · Call 911 or emergency medical service.; · Ensure that medical personnel are aware of the material(s) involved, take precautions to protect themselves and avoid contamination.; · Move victim to fresh air if it can be done safely.; · Administer oxygen if breathing is difficult.; · If victim is not breathing:; -- DO NOT perform mouth-to-mouth resuscitation; the victim may have ingested or inhaled the substance.; -- If equipped and pulse detected, wash face and mouth, then give artificial respiration using a proper respiratory medical device (bag-valve mask, pocket mask equipped with a one-way valve or other device).; -- If no pulse detected or no respiratory medical device available, provide continuous compressions. Conduct a pulse check every two minutes or monitor for any signs of spontaneous respirations.; · Remove and isolate contaminated clothing and shoes.; · For minor skin contact, avoid spreading material on unaffected skin.; · In case of contact with substance, remove immediately by flushing skin or eyes with running water for at least 20 minutes.; · For severe burns, immediate medical attention is required.; · Effects of exposure (inhalation, ingestion, Source: Emergency Response Guidebook (ERG)
  • ERG2024, Guide 154 (Caustic potash, solution; Caustic potash, solid): General First Aid:; · Call 911 or emergency medical service.; · Ensure that medical personnel are aware of the material(s) involved, take precautions to protect themselves and avoid contamination.; · Move victim to fresh air if it can be done safely.; · Administer oxygen if breathing is difficult.; · If victim is not breathing:; -- DO NOT perform mouth-to-mouth resuscitation; the victim may have ingested or inhaled the substance.; -- If equipped and pulse detected, wash face and mouth, then give artificial respiration using a proper respiratory medical device (bag-valve mask, pocket mask equipped with a one-way valve or other device).; -- If no pulse detected or no respiratory medical device available, provide continuous compressions. Conduct a pulse check every two minutes or monitor for any signs of spontaneous respirations.; · Remove and isolate contaminated clothing and shoes.; · For minor skin contact, avoid spreading material on unaffected skin.; · In case of contact with substance, remove immediately by flushing skin or eyes with running water for at least 20 minutes.; · For severe burns, immediate medical attention is required.; · Effects of exposure (inhalation, ingestion, Source: Emergency Response Guidebook (ERG)
  • First Aid: (General first aid procedures); Eye: Irrigate immediately - If this chemical contacts the eyes, immediately wash (irrigate) the eyes with large amounts of water, occasionally lifting the lower and upper lids. Get medical attention immediately.; Skin: Water flush immediately - If this chemical contacts the skin, immediately flush the contaminated skin with water. If this chemical penetrates the clothing, immediately remove the clothing and flush the skin with water. Get medical attention promptly.; Breathing: Respiratory support; Swallow: Medical attention immediately - If this chemical has been swallowed, get medical attention immediately. Source: The National Institute for Occupational Safety and Health (NIOSH)
  • Signal: Danger Source: Regulation (EC) No 1272/2008 of the European Parliament and of the Council
  • GHS Hazard Statements: H302: Harmful if swallowed [Warning Acute toxicity, oral]; H314: Causes severe skin burns and eye damage [Danger Skin corrosion/irritation] Source: Regulation (EC) No 1272/2008 of the European Parliament and of the Council
  • Precautionary Statement Codes: P260, P264, P270, P280, P301+P317, P301+P330+P331, P302+P361+P354, P304+P340, P305+P354+P338, P316, P321, P330, P363, P405, and P501 (click each P-code to see the statement) Source: Regulation (EC) No 1272/2008 of the European Parliament and of the Council
  • Note: This chemical does not meet GHS hazard criteria for < 0.1% (3 of 4709) of reports. Source: European Chemicals Agency (ECHA)
  • Signal: Danger Source: European Chemicals Agency (ECHA)
  • GHS Hazard Statements: H290 (20.9%): May be corrosive to metals [Warning Corrosive to Metals]; H302 (96.1%): Harmful if swallowed [Warning Acute toxicity, oral]; H314 (99.4%): Causes severe skin burns and eye damage [Danger Skin corrosion/irritation]; H318 (24.7%): Causes serious eye damage [Danger Serious eye damage/eye irritation] Source: European Chemicals Agency (ECHA)
  • Precautionary Statement Codes: P234, P260, P264, P264+P265, P270, P280, P301+P317, P301+P330+P331, P302+P361+P354, P304+P340, P305+P354+P338, P316, P317, P321, P330, P363, P390, P405, P406, and P501 (click each P-code to see the statement) Source: European Chemicals Agency (ECHA)
  • ECHA C&L Notifications Summary: Aggregated GHS information provided per 4709 reports by companies from 79 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.; Reported as not meeting GHS hazard criteria per 3 of 4709 reports by companies.; There are 78 notifications provided by 4706 of 4709 reports by companies with hazard statement code(s).; Information may vary between notifications depending on impurities, additives, and other factors. The percentage value in parenthesis indicates the notified classification ratio from companies that provide hazard codes. Only hazard codes with percentage values above 10% are shown. For more detailed information, please visit ECHA C&L website. Source: European Chemicals Agency (ECHA)
  • Signal: Danger Source: NITE-CMC
  • GHS Hazard Statements: H301: Toxic if swallowed [Danger Acute toxicity, oral]; H304: May be fatal if swallowed and enters airways [Danger Aspiration hazard]; H314: Causes severe skin burns and eye damage [Danger Skin corrosion/irritation]; H318: Causes serious eye damage [Danger Serious eye damage/eye irritation]; H370: Causes damage to organs [Danger Specific target organ toxicity, single exposure]; H372: Causes damage to organs through prolonged or repeated exposure [Danger Specific target organ toxicity, repeated exposure] Source: NITE-CMC
  • Precautionary Statement Codes: P260, P264, P264+P265, P270, P280, P301+P316, P301+P330+P331, P302+P361+P354, P304+P340, P305+P354+P338, P308+P316, P316, P317, P319, P321, P330, P331, P363, P405, and P501 (click each P-code to see the statement) Source: NITE-CMC
  • GHS Hazard Statements: H301: Toxic if swallowed [Danger Acute toxicity, oral]; H304: May be fatal if swallowed and enters airways [Danger Aspiration hazard]; H314: Causes severe skin burns and eye damage [Danger Skin corrosion/irritation]; H318: Causes serious eye damage [Danger Serious eye damage/eye irritation]; H370: Causes damage to organs [Danger Specific target organ toxicity, single exposure] Source: NITE-CMC
  • Cosmetic Ingredient Review Conclusion: The CIR Expert Panel concluded that ... Potassium Hydroxide is safe in hair straighteners and depilatories under conditions of recommended use; users should minimize skin contact. These ingredients are safe for all other present practices of use and concentration described in this safety assessment when formulated to be nonirritating. Source: Cosmetic Ingredient Review (CIR)
  • Cosmetic Ingredient Review Finding(s): Safe for use in cosmetics, with qualifications Source: Cosmetic Ingredient Review (CIR)
  • Toxicity Summary: IDENTIFICATION AND USE: Potassium hydroxide (KOH) is commercialized as a solid or as solutions with varying concentrations. It is used in soap manufacture; drain and pipeline cleaners; bleaching agents; manufacture of potassium carbonate and tetrapotassium pyrophosphate, an electrolyte in alkaline storage batteries and some fuel cells, absorbent for carbon dioxide and hydrogen sulfide; dyestuffs; liquid fertilizers; food additive; herbicides; electroplating; mercerizing; and paint removers. HUMAN EXPOSURE AND TOXICITY: Potassium hydroxide causes direct local effects on the skin, eyes and gastrointestinal tract after direct exposure. If KOH aerosols/mists occur, they will cause direct local effects on respiratory tract. Solutions with concentrations higher than 2% are corrosive, while concentrations of about 0.5 to about 2.0 % are irritating. The irritant effects are reported as coughing, wheezing, conjunctivitis, tearing, and irritation. Children may be accidentally exposed to commercial cleaning products. In a retrospective clinical study with 168 children after alkaline substance ingestion, 9 children (5.3%) developed gastric outlet obstruction. The fatal complications from an al Source: Hazardous Substances Data Bank (HSDB)
  • Consumer Uses: Solvent; Anti-adhesive/cohesive; Anti-freeze agent; Other; Lubricating agent; Processing aids not otherwise specified; Surfactant (surface active agent); Chemical reaction regulator; Fuel agents; pH regulating agent; Cleaning agent; Ion exchange agent; Not Known or Reasonably Ascertainable; Corrosion inhibitor; Soil amendments (fertilizers); Etching agent; Processing aids, specific to petroleum production; Intermediate Source: EPA Chemical Data Reporting (CDR)
  • Industry Uses: Ion exchange agent; Catalyst; Corrosion inhibitor; Not Known or Reasonably Ascertainable; Soil amendments (fertilizers); Cleaning agent; Absorbent; Oxidizing agent; Surface modifier; Processing aids, specific to petroleum production; Intermediate; Chelating agent; Etching agent; Adhesion/cohesion promoter; Freeze-thaw additive; Lubricating agent; Other; Flavoring and nutrient; Anti-adhesive/cohesive; Anti-freeze agent; Conductive agent; Fuel agents; pH regulating agent; Plating agent; Abrasives; Chemical reaction regulator; Semiconductor and photovoltaic agent; Surfactant (surface active agent); Processing aids not otherwise specified Source: EPA Chemical Data Reporting (CDR)
  • Cosmetic Ingredient Review Link: CIR ingredient: Potassium Hydroxide Source: Cosmetic Ingredient Review (CIR)
  • Sources/Uses: Used to make liquid soaps; it is also used in paint, varnish removers, and drain cleaners; it is used in electroplating, photoengraving, and lithography. [ACGIH] Used as a wet etchant in semiconductor manufacturing at standard concentrations of 50% or 10%; [CSH, p. 46] Source: Haz-Map, Information on Hazardous Chemicals and Occupational Diseases
  • Industrial Processes with risk of exposure: Acid and Alkali Cleaning of Metals [Category: Clean]; Electroplating [Category: Plate]; Semiconductor Manufacturing [Category: Industry]; Battery Manufacturing [Category: Industry]; Photographic Processing [Category: Other] Source: Haz-Map, Information on Hazardous Chemicals and Occupational Diseases
  • Activities with risk of exposure: Lithography printing [Category: Hobbies] Source: Haz-Map, Information on Hazardous Chemicals and Occupational Diseases
  • Uses: For potassium hydroxide (USEPA/OPP Pesticide Code: 075602) there are 0 labels match. /SRP: Not registered for current use in the U.S., but approved pesticide uses may change periodically and so federal, state and local authorities must be consulted for currently approved uses./ Source: Hazardous Substances Data Bank (HSDB)
  • Uses: The active ingredient is no longer contained in any registered pesticide products ... "cancelled." Source: Hazardous Substances Data Bank (HSDB)
  • Uses: Manufacturing liquid soap; mordant for wood; absorbing CO2; mercerizing cotton; print and varnish removers; electroplating, photoengraving and lithography; printing inks; in analytical chemistry for alkalimetric titrations; in organic synthesis. Pharmaceutic aid (alkalizer). Source: Hazardous Substances Data Bank (HSDB)
  • Uses: Soap manufacture, bleaching, manufacture of potassium carbonate and tetrapotassium pyrophosphate, electrolyte in alkaline storage batteries and some fuel cells, absorbent for carbon dioxide and hydrogen sulfide, dyestuffs, liquid fertilizers, food additive, herbicides, electroplating, mercerizing, paint removers, reagent. Source: Hazardous Substances Data Bank (HSDB)
  • Uses: For more Uses (Complete) data for POTASSIUM HYDROXIDE (10 total), please visit the HSDB record page. Source: Hazardous Substances Data Bank (HSDB)

Mapped by: Existing checksum-valid CAS to unique PubChem CID match. Retrieved: 2026-08-31. Open source record

Scientific classifications and hazard annotations provide context and do not replace the market-specific regulatory decision shown above.

Additional source coverage and match status
SourceResultChecked
NIH PubChem PUG-ViewExact match2026-08-31

A recorded no-match is useful evidence that the source was checked; it is not a claim that the substance does not exist elsewhere.

Retrieved from NIH PubChem on 2026-08-31 by checksum-valid CAS matching. Chemical properties do not replace the regulatory decision on this page.

PubChem 2D chemical structure for CAS 1310-73-2
CAS 1310-73-2PubChem CID 14798

Verified chemistry for CAS 1310-73-2

Sodium Hydroxide

IUPAC name
sodium hydroxide
Molecular formula
HNaO
Molecular weight
39.997 g/mol
Exact mass
39.99250893 Da
Monoisotopic mass
39.99250893 Da
Topological polar surface area
1.0 Ų
Molecular complexity
2.0
Formal charge
0
Hydrogen-bond donors
1
Hydrogen-bond acceptors
1
Rotatable bonds
0
Heavy atoms
2
Covalent units
2

Names and synonyms reported to PubChem

Caustic sodaSodium hydrateAetznatronSoda lyeWhite causticSoda, causticNatriumhydroxidRohrputz
16 more reported names
PlungCollo-GrillreinCollo-TapettaFuers RohrRohrreiniger RofixHydroxyde de sodiumSodium hydroxide (Na(OH))NatriumhydroxydeSoda, hydrateSodium hydroxide dimerNatrium causticumSoda, kaustischeLewis-red devil lyeSodio(idrossido di)Sodium hydroxide (Na2(OH)2)Stamperprep
Open full PubChem recordSafety and hazards at PubChemPubChem annotationsChemical classifications3D structure image
External database identifiers
Advanced structure statistics
Defined atom stereocentres
0
Undefined atom stereocentres
0
Defined bond stereocentres
0
Undefined bond stereocentres
0
3D conformers
0
Machine-readable structure identifiers
SMILES
[OH-].[Na+]
InChI
InChI=1S/Na.H2O/h;1H2/q+1;/p-1
InChIKey
HEMHJVSKTPXQMS-UHFFFAOYSA-M

Evidence from additional scientific databases

NIH PubChem PUG-View
Exact identifier match14798

Attributed physical-property, hazard, environmental and use annotations.

  • Autoignition Temperature: Not flammable (USCG, 1999) Source: CAMEO Chemicals
  • First Aid: (Act quickly); EYES: flush with water at once for at least 15 min.; SKIN: flush with water, then rinse with dilute vinegar (acetic acid).; INGESTION: give water and milk. Do NOT induce vomiting. Call physician at once, even when injury seems to be slight. (USCG, 1999) Source: CAMEO Chemicals
  • First Aid: Excerpt from NIOSH Pocket Guide for Sodium hydroxide:; Eye: IRRIGATE IMMEDIATELY - If this chemical contacts the eyes, immediately wash (irrigate) the eyes with large amounts of water, occasionally lifting the lower and upper lids. Get medical attention immediately.; Skin: WATER FLUSH IMMEDIATELY - If this chemical contacts the skin, immediately flush the contaminated skin with water. If this chemical penetrates the clothing, immediately remove the clothing and flush the skin with water. Get medical attention promptly.; Breathing: RESPIRATORY SUPPORT - If a person breathes large amounts of this chemical, move the exposed person to fresh air at once. If breathing has stopped, perform artificial respiration. Keep the affected person warm and at rest. Get medical attention as soon as possible.; Swallow: MEDICAL ATTENTION IMMEDIATELY - If this chemical has been swallowed, get medical attention immediately. (NIOSH, 2024) Source: CAMEO Chemicals
  • ERG2024, Guide 154 (Sodium hydroxide, solution; Sodium hydroxide, solid): General First Aid:; · Call 911 or emergency medical service.; · Ensure that medical personnel are aware of the material(s) involved, take precautions to protect themselves and avoid contamination.; · Move victim to fresh air if it can be done safely.; · Administer oxygen if breathing is difficult.; · If victim is not breathing:; -- DO NOT perform mouth-to-mouth resuscitation; the victim may have ingested or inhaled the substance.; -- If equipped and pulse detected, wash face and mouth, then give artificial respiration using a proper respiratory medical device (bag-valve mask, pocket mask equipped with a one-way valve or other device).; -- If no pulse detected or no respiratory medical device available, provide continuous compressions. Conduct a pulse check every two minutes or monitor for any signs of spontaneous respirations.; · Remove and isolate contaminated clothing and shoes.; · For minor skin contact, avoid spreading material on unaffected skin.; · In case of contact with substance, remove immediately by flushing skin or eyes with running water for at least 20 minutes.; · For severe burns, immediate medical attention is required.; · Effects of exposure (inhalation, ingestion, Source: Emergency Response Guidebook (ERG)
  • ERG2024, Guide 154 (Caustic soda, solid; Caustic soda, solution): General First Aid:; · Call 911 or emergency medical service.; · Ensure that medical personnel are aware of the material(s) involved, take precautions to protect themselves and avoid contamination.; · Move victim to fresh air if it can be done safely.; · Administer oxygen if breathing is difficult.; · If victim is not breathing:; -- DO NOT perform mouth-to-mouth resuscitation; the victim may have ingested or inhaled the substance.; -- If equipped and pulse detected, wash face and mouth, then give artificial respiration using a proper respiratory medical device (bag-valve mask, pocket mask equipped with a one-way valve or other device).; -- If no pulse detected or no respiratory medical device available, provide continuous compressions. Conduct a pulse check every two minutes or monitor for any signs of spontaneous respirations.; · Remove and isolate contaminated clothing and shoes.; · For minor skin contact, avoid spreading material on unaffected skin.; · In case of contact with substance, remove immediately by flushing skin or eyes with running water for at least 20 minutes.; · For severe burns, immediate medical attention is required.; · Effects of exposure (inhalation, ingestion, Source: Emergency Response Guidebook (ERG)
  • First Aid: (General first aid procedures); Eye: Irrigate immediately - If this chemical contacts the eyes, immediately wash (irrigate) the eyes with large amounts of water, occasionally lifting the lower and upper lids. Get medical attention immediately.; Skin: Water flush immediately - If this chemical contacts the skin, immediately flush the contaminated skin with water. If this chemical penetrates the clothing, immediately remove the clothing and flush the skin with water. Get medical attention promptly.; Breathing: Respiratory support; Swallow: Medical attention immediately - If this chemical has been swallowed, get medical attention immediately. Source: The National Institute for Occupational Safety and Health (NIOSH)
  • Signal: Danger Source: Regulation (EC) No 1272/2008 of the European Parliament and of the Council
  • GHS Hazard Statements: H314: Causes severe skin burns and eye damage [Danger Skin corrosion/irritation] Source: Regulation (EC) No 1272/2008 of the European Parliament and of the Council
  • Precautionary Statement Codes: P260, P264, P280, P301+P330+P331, P302+P361+P354, P304+P340, P305+P354+P338, P316, P321, P363, P405, and P501 (click each P-code to see the statement) Source: Regulation (EC) No 1272/2008 of the European Parliament and of the Council
  • Note: This chemical does not meet GHS hazard criteria for < 0.1% (4 of 6949) of reports. Source: European Chemicals Agency (ECHA)
  • Signal: Danger Source: European Chemicals Agency (ECHA)
  • GHS Hazard Statements: H290 (47.5%): May be corrosive to metals [Warning Corrosive to Metals]; H314 (> 99.9%): Causes severe skin burns and eye damage [Danger Skin corrosion/irritation]; H315 (36.5%): Causes skin irritation [Warning Skin corrosion/irritation]; H318 (44.1%): Causes serious eye damage [Danger Serious eye damage/eye irritation]; H319 (36.6%): Causes serious eye irritation [Warning Serious eye damage/eye irritation] Source: European Chemicals Agency (ECHA)
  • Precautionary Statement Codes: P234, P260, P264, P264+P265, P280, P301+P330+P331, P302+P352, P302+P361+P354, P304+P340, P305+P351+P338, P305+P354+P338, P316, P317, P321, P332+P317, P337+P317, P362+P364, P363, P390, P405, P406, and P501 (click each P-code to see the statement) Source: European Chemicals Agency (ECHA)
  • ECHA C&L Notifications Summary: Aggregated GHS information provided per 6949 reports by companies from 80 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.; Reported as not meeting GHS hazard criteria per 4 of 6949 reports by companies.; There are 79 notifications provided by 6945 of 6949 reports by companies with hazard statement code(s).; Information may vary between notifications depending on impurities, additives, and other factors. The percentage value in parenthesis indicates the notified classification ratio from companies that provide hazard codes. Only hazard codes with percentage values above 10% are shown. For more detailed information, please visit ECHA C&L website. Source: European Chemicals Agency (ECHA)
  • GHS Hazard Statements: H290 (100%): May be corrosive to metals [Warning Corrosive to Metals]; H314 (100%): Causes severe skin burns and eye damage [Danger Skin corrosion/irritation]; H318 (100%): Causes serious eye damage [Danger Serious eye damage/eye irritation] Source: European Chemicals Agency (ECHA)
  • Precautionary Statement Codes: P234, P260, P264, P264+P265, P280, P301+P330+P331, P302+P361+P354, P304+P340, P305+P354+P338, P316, P317, P321, P363, P390, P405, P406, and P501 (click each P-code to see the statement) Source: European Chemicals Agency (ECHA)
  • ECHA C&L Notifications Summary: Aggregated GHS information provided per 2 reports by companies from 1 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.; Information may vary between notifications depending on impurities, additives, and other factors. The percentage value in parenthesis indicates the notified classification ratio from companies that provide hazard codes. Only hazard codes with percentage values above 10% are shown. For more detailed information, please visit ECHA C&L website. Source: European Chemicals Agency (ECHA)
  • Signal: Danger Source: NITE-CMC
  • NFPA Health Rating: 3 - Materials that, under emergency conditions, can cause serious or permanent injury. Source: Hazardous Substances Data Bank (HSDB)
  • NFPA Fire Rating: 0 - Materials that will not burn under typical fire conditions, including intrinsically noncombustible materials such as concrete, stone, and sand. Source: Hazardous Substances Data Bank (HSDB)
  • NFPA Instability Rating: 1 - Materials that in themselves are normally stable but that can become unstable at elevated temperatures and pressures. Source: Hazardous Substances Data Bank (HSDB)
  • Cosmetic Ingredient Review Conclusion: The CIR Expert Panel concluded that ... Sodium Hydroxide is safe in hair straighteners and depilatories under conditions of recommended use; users should minimize skin contact. These ingredients are safe for all other present practices of use and concentration described in this safety assessment when formulated to be nonirritating. Source: Cosmetic Ingredient Review (CIR)
  • Cosmetic Ingredient Review Finding(s): Safe for use in cosmetics, with qualifications Source: Cosmetic Ingredient Review (CIR)
  • Environmental Fate: AQUATIC FATE: In the case of a solid, anhydrous sodium hydroxide spill on soil, ground water pollution will occur if precipitation occurs prior to clean up. Precipitation will dissolve some of the solid (with much heat given off) and create an aqueous solution of sodium hydroxide, which then would be able to infiltrate the soil. However, prediction of the concentration and properties of the solution produced would be difficult. Source: Hazardous Substances Data Bank (HSDB)
  • Consumer Uses: Adhesion/cohesion promoter; Etching agent; Flocculating agent; Intermediate; Processing aids, specific to petroleum production; Oxidizing agent; Laboratory chemicals; Dye; Cleaning agent; Plasticizer; Stabilizing agent; Soil amendments (fertilizers); Catalyst; Ion exchange agent; Not Known or Reasonably Ascertainable; Processing aids not otherwise specified; Surfactant (surface active agent); Chemical reaction regulator; Fuel agents; pH regulating agent; Bleaching agent; Solvent; Dispersing agent; Anti-freeze agent; Anti-adhesive/cohesive; Other; Lubricating agent Source: EPA Chemical Data Reporting (CDR)
  • Industry Uses: Soil amendments (fertilizers); Ion exchange agent; Catalyst; Diluent; Not Known or Reasonably Ascertainable; Thickening agent; Corrosion inhibitor; Stabilizing agent; Reducing agent; Cleaning agent; Dye; Softener and conditioner; Adsorbent; Defoamer; Intermediate; Anti-scaling agent; Processing aids, specific to petroleum production; Adhesion/cohesion promoter; Etching agent; Flocculating agent; Chelating agent; Leaching agent; Lubricating agent; Other; Sizing agent; CBI; Swelling agent; Anti-freeze agent; Anti-adhesive/cohesive; Solvent; Fuel agents; pH regulating agent; Antioxidant; Bleaching agent; Chemical reaction regulator; Plating agent; Processing aids, not otherwise listed; Processing aids not otherwise specified Source: EPA Chemical Data Reporting (CDR)
  • Cosmetic Ingredient Review Link: CIR ingredient: Sodium Hydroxide Source: Cosmetic Ingredient Review (CIR)
  • Sources/Uses: Used to neutralize acids, produce sodium salts, hydrolyze fats to make soaps, and precipitate metals; large amounts are used in petroleum refining, rayon production, and rubber reclaiming; [Merck Index # 8627] Also used in metal cleaning, electroplating, processing cotton fabrics, and bleaching; [ATSDR Medical Management] Used in photography (developing bath); [www.ci.tucson.az.us/arthazards/medium.html] In semiconductor manufacturing, sodium hydroxide is used to develop the pattern in the photoresists and also as a wet echant. [CHS, p. 44-5] Caustic soda is used in hide preparation for leather production; [PMID 21938525] Source: Haz-Map, Information on Hazardous Chemicals and Occupational Diseases
  • Industrial Processes with risk of exposure: Acid and Alkali Cleaning of Metals [Category: Clean]; Electroplating [Category: Plate]; Petroleum Production and Refining [Category: Industry]; Semiconductor Manufacturing [Category: Industry]; Smelting Copper or Lead [Category: Industry]; Textiles (Fiber & Fabric Manufacturing) [Category: Industry]; Leather Tanning and Processing [Category: Industry]; Photographic Processing [Category: Other]; Textiles (Printing, Dyeing, or Finishing) [Category: Industry]; Metal Extraction and Refining [Category: Industry] Source: Haz-Map, Information on Hazardous Chemicals and Occupational Diseases
  • Activities with risk of exposure: Textile arts [Category: Hobbies]; Applying metallic patinas [Category: Hobbies] Source: Haz-Map, Information on Hazardous Chemicals and Occupational Diseases
  • Uses: Both oil base and water base fracturing fluids are being used in the fracturing industry. Water base, which includes alcohol-water mixtures and low strength acids, make up the majority of treating fluids. The common chemicals added to these fluids are polymers for viscosity development, crosslinkers for viscosity enhancement, pH control chemicals, gel breakers for polymer degradation following the treatment, surfactants, clay stabilizers, alcohol, bactericides, fluid loss additives and friction reducer. /Hydraulic fracturing/ Source: Hazardous Substances Data Bank (HSDB)
  • Uses: Hydraulic fracturing uses a specially blended liquid which is pumped into a well under extreme pressure causing cracks in rock formations underground. These cracks in the rock then allow oil and natural gas to flow, increasing resource production. ... Chemical Name: Sodium hydroxide; Chemical Purpose: Adjusts the pH of fluid to maintain the effectiveness of other components, such as crosslinkers; Product Function: pH Adjusting agent. Source: Hazardous Substances Data Bank (HSDB)
  • Uses: For sodium hydroxide (USEPA/OPP Pesticide Code: 075603) ACTIVE products with label matches. /SRP: Registered for use in the U.S. but approved pesticide uses may change periodically and so federal, state and local authorities must be consulted for currently approved uses./ Source: Hazardous Substances Data Bank (HSDB)
  • Uses: In inorganic chemistry, sodium hydroxide is used in the manufacture of sodium salts, for alkaline ore digestion, and for pH regulation. Source: Hazardous Substances Data Bank (HSDB)
  • Uses: For more Uses (Complete) data for SODIUM HYDROXIDE (16 total), please visit the HSDB record page. Source: Hazardous Substances Data Bank (HSDB)

Mapped by: Existing checksum-valid CAS to unique PubChem CID match. Retrieved: 2026-08-31. Open source record

Scientific classifications and hazard annotations provide context and do not replace the market-specific regulatory decision shown above.

Additional source coverage and match status
SourceResultChecked
NIH PubChem PUG-ViewExact match2026-08-31

A recorded no-match is useful evidence that the source was checked; it is not a claim that the substance does not exist elsewhere.

Retrieved from NIH PubChem on 2026-08-31 by checksum-valid CAS matching. Chemical properties do not replace the regulatory decision on this page.

Official source and provenance

Registered source
South Korea MFDS cosmetic ingredient data
Source reference
화장품 안전기준 등에 관한 규정, 별표 2, record 2-402
Source record ID
2-402
Source version
2026-19
Source language
Korean
Translation status
No English translation
Effective date
2026-03-18
Source updated
2026-03-18
Snapshot checked
2026-08-30 04:33 UTC
Validation method
MFDS JSON appendices 1–2 parse; 1077 prohibited, 243 restricted
SHA-256
056de35b843a5e31f709073f9e79d5e6e18f7c9164eb537bb099b185a37ef7d8

Registered dataset notes

Dataset coverage
Ingredient identity and separate restriction/regulation data endpoints
Authority note
Korean source is canonical; English materials alone are not complete enough for certification
Inspect the exact official sourceRegulator guidance

How this record fits the market dataset

1320
current South Korea records
243
records marked Restricted
1320
records from this source version
1252
market records with CAS identity

Status distribution

Prohibited: 1077Restricted: 243

Condition text is present on 638 of 1320 current records. An empty condition field is interpreted according to the record type above; it is never converted into an unrestricted-use claim.

South Korea market context

Complete current appendix dataset

Coverage version: MFDS Notice 2026-19, effective 18 March 2026

All rows in official Appendix 1 (prohibited) and Appendix 2 (restricted) of the Safety Standards for Cosmetics.

Verification checklist

  1. Match the Korean canonical substance name and identifiers.
  2. Review all Appendix 1 and 2 matches and conditions.
  3. Check functional-cosmetic and positive-list requirements where applicable.
  4. Confirm current MFDS notice, responsible seller and label obligations.

Official market sources

Verification workflow and record completeness

Before using this result in a compliance decision

  1. Confirm that “포타슘하이드록사이드또는 소듐하이드록사이드” and every CAS/EC identifier refer to the material in your supplier specification.
  2. Match the Korean canonical substance name and identifiers.
  3. Review all Appendix 1 and 2 matches and conditions.
  4. Check functional-cosmetic and positive-list requirements where applicable.
  5. Confirm current MFDS notice, responsible seller and label obligations.
  6. Document the source version and recheck the regulator before manufacture, notification or market placement.

Fields available in this record

  • Official substance nameAvailable
  • CASAvailable
  • ECAvailable
  • Separate condition textAvailable
  • Effective dateAvailable
  • Snapshot hash and methodAvailable

Questions this page answers

This substance is not unrestricted: cosmetic use is subject to the conditions in the cited official record. Check product type, body area, concentration, purity and warning requirements before deciding whether a formulation is compliant.

If this row does not reproduce conditions, open the cited official detail because omission does not mean unrestricted use. Korean source wording is canonical and other positive lists/notices may still apply to the formulation.

The record cites 화장품 안전기준 등에 관한 규정, 별표 2, record 2-402, source version 2026-19. Open the official source.

No. CAS helps resolve identity, but jurisdictions can classify the same substance differently and can apply different product scopes, limits, warnings and transition dates.

Stable citation

포타슘하이드록사이드또는 소듐하이드록사이드. 화장품 안전기준 등에 관한 규정, 별표 2, record 2-402. South Korea. Source version 2026-19. CosIng Checker regulatory record: https://cosingchecker.com/regulations/kr/records/2127/

Cite the regulator as the legal authority. This page is a structured evidence index and verification aid, not a substitute for the official text or professional legal assessment.

Interpretation and limits for South Korea

This substance is not unrestricted: cosmetic use is subject to the conditions in the cited official record.

Check product type, body area, concentration, purity and warning requirements before deciding whether a formulation is compliant.

How to interpret the legal role

The cited row forms part of a binding rule or legally incorporated list for this market.

Evidence on this page

  • Recorded outcome: Restricted
  • Legal role: Binding rule
  • Source version: 2026-19
  • Effective date: 2026-03-18

What it does not prove

Korean source wording is canonical and other positive lists/notices may still apply to the formulation.

Further authoritative substance research

These sources can add identity, safety, exposure or hazard context. A link is not evidence that the database contains this exact substance, and none of these sources overrides the market decision above.

Cosmetic Ingredient Review safety assessments

Expert Panel conclusions, assessed ingredient groups, use conditions, dates and report documents

Independent expert review considered by FDA; not a government approval or binding market rule

Research this identity at the source

FDA Global Substance Registration System

UNII identifiers, preferred names, substance types, codes and public substance relationships

Identity registry only; UNII availability does not imply FDA review or approval

Research this identity at the source

ILO/WHO International Chemical Safety Cards

Hazards, symptoms, first aid, storage, incompatibilities and physical properties for covered chemicals

International occupational chemical-safety reference; not cosmetic-use approval

Research this identity at the source

Japan NITE-CHRIP

Chemical identity, Japanese and foreign legal lists, GHS hazards and exposure-related information

Chemical-management evidence; cosmetic status remains governed by the applicable MHLW standard and market rules

Research this identity at the source

NIOSH Pocket Guide to Chemical Hazards

REL, PEL, IDLH, properties, exposure routes, symptoms, target organs, first aid and measurement methods for covered workplace chemicals

US occupational-health guidance and limits; not a cosmetic ingredient decision

Research this identity at the source

OECD eChemPortal

Gateway to authority-owned physical-property, fate, ecotoxicity, toxicity, exposure and GHS records

Discovery gateway; each linked authority remains responsible for its data

Research this identity at the source

US EPA CompTox CTX APIs

API key required for import

DTXSID identity, experimental and predicted properties, toxicity, bioactivity, exposure and environmental data

Scientific and computational evidence; predictions must remain labelled and do not determine cosmetic legality

Research this identity at the source