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Official EU label nameGlossary entry 26674

SODIUM HYDROXIDE

This record confirms an official common ingredient name for EU cosmetic product labelling. It does not by itself confirm that the substance is permitted, unrestricted or safe.

Global evidence snapshot

The resolved identity has matching regulatory evidence in 1 of 13 indexed market datasets: 1 country records and 0 EU Annex records. Every result and evidence gap is listed below.

1 markets with evidence
Markets checked
13
Markets with evidence
1
Evidence gaps
12
Resolved identifiers
2

A missing local match is not permission, approval or proof of safety. It means no strong identity match was resolved in that indexed dataset.

Resolved substance identity

CAS:1310-73-2
EC:215-185-5
Ingredient index records:
SODIUM HYDROXIDE
Ph. Eur. name: natrii hydroxidum
Cosmetic functions: BUFFERING, DENATURANT

Sodium hydroxide

Inventory restriction note: III/15a

Open full local profile
4 matched or reported names
SODIUM HYDROXIDEsodium hydroxidenatrii hydroxidumPotassium or sodium hydroxide

Regulatory evidence in all 13 markets

Open each matched record for its scope, concentration, conditions, warnings and official source version.

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MarketResultRecordsDatasetMeaning / next action
European Union
EU
No local match0
Complete annex dataset
Regulation (EC) 1223/2009 consolidated to 1 May 2026
No annex match only means that these five annexes did not return a match; CosIng identity data and other EU obligations still need review.
Great Britain
GB
No local match0
Complete consolidated annex dataset
GB retained Regulation 1223/2009 schedules, effective 15 August 2026
No annex match is not approval and does not cover Northern Ireland, which follows the applicable EU framework.
Canada
CA
No local match0
Complete Hotlist snapshot
Health Canada Cosmetic Ingredient Hotlist, 13 August 2025
The Hotlist is an administrative compliance tool, not an exhaustive safety approval list.
New Zealand
NZ
Restricted1Open record 1
Complete schedules dataset
Cosmetic Products Group Standard schedules effective 1 January 2026
Review every linked record and exact conditions.
ASEAN
ASEAN
No local match0
Complete regional annex dataset
ASEAN Cosmetic Directive annexes 2026-1, 22 June 2026
Regional annex coverage does not replace member-state implementation dates, notifications or national deviations.
China
CN
No local match0
Complete prohibited catalogues plus official-source workflow
NMPA 2021 banned catalogues plus dynamic IECIC List I/List II system current since 2025
IECIC listing is not blanket approval; absence may require the new cosmetic ingredient route, and restrictions are checked separately.
Japan
JP
No local match0
Complete Standards appendices dataset
MHLW Standards for Cosmetics official English source and Japanese amendments checked for the imported snapshot
The Japanese text and subsequent notices are canonical; no local match is not a product-compliance conclusion.
South Korea
KR
No local match0
Complete current appendix dataset
MFDS Notice 2026-19, effective 18 March 2026
Korean source wording is canonical and other positive lists/notices may still apply to the formulation.
United States
US
No local match0
Complete enumerated federal ingredient rules
eCFR Title 21 issue date 27 August 2026
FDA has no general approved-cosmetic-ingredient catalogue; absence from these sections is not approval or proof of safety.
Australia
AU
No local match0
Complete cosmetic-relevant Poisons Standard subset plus official workflow
Therapeutic Goods (Poisons Standard—June 2026) Instrument 2026
An AICIS Inventory match is not cosmetic approval; no Inventory match can indicate a new, exempted, reported or confidential introduction.
Brazil
BR
No local match0
Complete prohibited dataset plus current restricted-list workflow
ANVISA RDC 1.029/2026 and RDC 1.030/2026, published 15 June 2026
RDC 1.030/2026 amends rather than replaces the prohibited baseline, and the second restricted-list revision was still under consultation in July 2026.
India
IN
No local match0
Complete current Part 2 dataset plus official workflow for Parts 1, 3 and 4
Cosmetics Rules 2020 plus current BIS IS 4707 parts (1:2020, 2:2025, 3:2025, 4:2022)
The standards are separate controlled publications; absence from a locally indexed excerpt is not permission.
Saudi Arabia
SA
No local match0
Complete official list index
SFDA live prohibited/restricted lists, snapshot 30 August 2026
No list match is not permission; Gulf/SFDA product, claim, notification and technical requirements still apply.
No market rows match this filter.

Matching market records and conditions

Chemical identity and properties

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

Sodium Hydroxide

IUPAC name
sodium hydroxide
Molecular formula
HNaO
Molecular weight
39.997 g/mol
Exact mass
39.99250893 Da
Topological polar surface area
1.0 Ų
Hydrogen-bond donors
1
Hydrogen-bond acceptors
1
Covalent units
2
Defined stereocentres
0

Also known as

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 recordPubChem annotations3D structure image
External database identifiers

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.

Additional authoritative substance research

These source-specific lookups can add hazard, toxicology, identity and assessment context. A link is a research route, not a claim that the source contains an exact record.

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

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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

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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

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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

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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

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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

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US EPA CompTox CTX APIs

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

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Continue the compliance check

1. Confirm identity

Match the supplier specification, CAS/EC identifiers and composition to this official label name. Similar wording is not proof of chemical equivalence.

2. Review restrictions

Check every exact Annex record shown above, plus CMR, nanomaterial, SCCS and later-amendment requirements that may apply.

3. Verify the formula

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Official source and scope

Imported from Commission Implementing Decision (EU) 2025/1175 (dataset version EU 2025/1175). The glossary supplies common ingredient names for the ingredient list required by Article 19(1)(g); it is not an approval or safety list.

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