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ProhibitedBinding ruleASEANOriginal is EnglishOfficial-source import checked

Styrene

ASEAN Annex II lists this record among substances prohibited in cosmetic products. Member-state transition rules and deviations still require local verification.

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Regulatory decision and full conditions

Status
Prohibited
Legal role
Binding rule
Regulatory summary
ASEAN Annex II lists this record among substances prohibited in cosmetic products. Member-state transition rules and deviations still require local verification.
Conditions and restrictions
A prohibition entry may contain no separate condition text because the regulatory outcome is the prohibition itself. Open the cited source and apply the market-wide requirements below.

Substance identity

Official source name
Styrene
CAS
100-42-5
EC
202-851-5
Identity mapping
cas_number
Linked ingredient
STYRENE
Search this identity across the siteCAS 100-42-5EC 202-851-5

Linked CosIng identity data

Names and aliases

STYRENE

CosIng description: Ethenyl-benzene; Vinylbenzene; Phenylethylene; Styrol; Styrolene; Cinnamene

EU inventory restriction note: II/1575

Recorded cosmetic function: SOLVENT

Function pages:SOLVENT

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.

6 market datasets
PubChem 2D chemical structure for CAS 100-42-5
CAS 100-42-5PubChem CID 7501

Verified chemistry for CAS 100-42-5

Styrene

Styrene is a vinylarene that is benzene carrying a vinyl group. It has been isolated from the benzoin resin produced by Styrax species. It has a role as a mutagen, a mouse metabolite and a plant metabolite. It is a volatile organic compound, a member of styrenes and a vinylarene. — ChEBI

IUPAC name
styrene
Molecular formula
C8H8
Molecular weight
104.15 g/mol
Exact mass
104.062600255 Da
Monoisotopic mass
104.062600255 Da
XLogP3
2.9
Topological polar surface area
0.0 Ų
Molecular complexity
68.0
Formal charge
0
Hydrogen-bond donors
0
Hydrogen-bond acceptors
0
Rotatable bonds
1
Heavy atoms
8
Covalent units
1

Names and synonyms reported to PubChem

EthenylbenzenePhenylethyleneVinylbenzeneStyrolCinnameneStyrene monomerBenzene, ethenyl-Phenylethene
16 more reported names
StyrolenePhenethyleneVinylbenzolStyroleVinyl benzeneStyropol SOCinnamolStyrenBenzene, vinyl-CinnamenolEthylene, phenyl-VinylbenzenStiroloStyreenVinyl-benzeneNCI-C02200
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 pharmacophore features
2
3D rings
1
3D hydrophobes
1
3D acceptor features
0
3D donor features
0
3D anionic centres
0
3D cationic centres
0
3D conformers
1
Effective 3D rotors
1.0
Machine-readable structure identifiers
SMILES
C=CC1=CC=CC=C1
InChI
InChI=1S/C8H8/c1-2-8-6-4-3-5-7-8/h2-7H,1H2
InChIKey
PPBRXRYQALVLMV-UHFFFAOYSA-N

Evidence from additional scientific databases

EMBL-EBI ChEBI
Exact identifier matchCHEBI:27452

styrene

A vinylarene that is benzene carrying a vinyl group. It has been isolated from the benzoin resin produced by Styrax species.

Formula
C8H8
Average mass
104.152 g/mol
Monoisotopic mass
104.06260 Da
Formal charge
0
  • styrenes — is a (CHEBI:26799)
  • vinylarene — is a (CHEBI:51324)
  • volatile organic compound — is a (CHEBI:134179)
  • mutagen — has role (CHEBI:25435)
  • plant metabolite — has role (CHEBI:76924)
  • mouse metabolite — has role (CHEBI:75771)
  • mutagen — has role (CHEBI:25435)
  • plant metabolite — has role (CHEBI:76924)
  • mouse metabolite — has role (CHEBI:75771)
  • styrenes — is a (CHEBI:26799)
  • vinylarene — is a (CHEBI:51324)
  • volatile organic compound — is a (CHEBI:134179)
Additional curated names
styreneethenylbenzenephenylethenePhenylethyleneStyrenStyreneStyrolvinylbenzene
Cross-references from this source
  • CAS: 100-42-5 — NIST Chemistry WebBook
  • CAS: 100-42-5 — KEGG COMPOUND
  • CAS: 100-42-5 — ChemIDplus
  • REGISTRY_NUMBER: 1071236 — Reaxys
  • REGISTRY_NUMBER: 2991 — Gmelin
  • MANUAL_X_REF: c0115 — UM-BBD
  • MANUAL_X_REF: C07083 — KEGG COMPOUND
  • MANUAL_X_REF: C07083 — KEGG COMPOUND
  • MANUAL_X_REF: CPD-1092 — MetaCyc
  • MANUAL_X_REF: HMDB0034240 — HMDB
  • MANUAL_X_REF: Styrene — Wikipedia

Mapped by: Exact CAS cross-reference in the ChEBI compound record. Source updated: 2021-03-05. Retrieved: 2026-08-31. Open source record

NIH PubChem PUG-View
Exact identifier match7501

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

  • 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. IMMEDIATELY call a physician and be prepared to transport the victim to a hospital even if no symptoms (such as wheezing, coughing, shortness of breath, or burning in the mouth, throat, or chest) develop. Provide proper respiratory protection to rescuers entering an unknow Source: CAMEO Chemicals
  • ERG2024, Guide 128P (Styrene monomer, stabilized): 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 - If this chemical contacts the skin, flush the contaminated skin with water. Where there is evidence of skin irritation, get medical attention.; 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: H226: Flammable liquid and vapor [Warning Flammable liquids]; H315: Causes skin irritation [Warning Skin corrosion/irritation]; H319: Causes serious eye irritation [Warning Serious eye damage/eye irritation]; H332: Harmful if inhaled [Warning Acute toxicity, inhalation]; H361d: Suspected of damaging the unborn child [Warning Reproductive toxicity]; H372: Causes damage to organs through prolonged or repeated exposure [Danger Specific target organ toxicity, repeated exposure] Source: Regulation (EC) No 1272/2008 of the European Parliament and of the Council
  • Precautionary Statement Codes: P203, P210, P233, P240, P241, P242, P243, P260, P261, P264, P264+P265, P270, P271, P280, P302+P352, P303+P361+P353, P304+P340, P305+P351+P338, P317, P318, P319, P321, P332+P317, P337+P317, P362+P364, P370+P378, P403+P235, 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 6114) of reports. Source: European Chemicals Agency (ECHA)
  • Signal: Danger Source: European Chemicals Agency (ECHA)
  • GHS Hazard Statements: H226 (> 99.9%): Flammable liquid and vapor [Warning Flammable liquids]; H304 (50.6%): May be fatal if swallowed and enters airways [Danger Aspiration hazard]; H315 (> 99.9%): Causes skin irritation [Warning Skin corrosion/irritation]; H319 (99.9%): Causes serious eye irritation [Warning Serious eye damage/eye irritation]; H332 (98%): Harmful if inhaled [Warning Acute toxicity, inhalation]; H335 (52%): May cause respiratory irritation [Warning Specific target organ toxicity, single exposure; Respiratory tract irritation]; H361 (35.1%): Suspected of damaging fertility or the unborn child [Warning Reproductive toxicity]; H372 (73.8%): Causes damage to organs through prolonged or repeated exposure [Danger Specific target organ toxicity, repeated exposure]; H412 (49%): Harmful to aquatic life with long lasting effects [Hazardous to the aquatic environment, long-term hazard] Source: European Chemicals Agency (ECHA)
  • Precautionary Statement Codes: P203, P210, P233, P240, P241, P242, P243, P260, P261, P264, P264+P265, P270, P271, P273, P280, P301+P316, P302+P352, P303+P361+P353, P304+P340, P305+P351+P338, P317, P318, P319, P321, P331, P332+P317, P337+P317, P362+P364, P370+P378, P403+P233, P403+P235, P405, 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 6114 reports by companies from 92 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 6114 reports by companies.; There are 91 notifications provided by 6111 of 6114 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: Warning Source: European Chemicals Agency (ECHA)
  • GHS Hazard Statements: H226 (100%): Flammable liquid and vapor [Warning Flammable liquids]; H315 (100%): Causes skin irritation [Warning Skin corrosion/irritation]; H319 (100%): Causes serious eye irritation [Warning Serious eye damage/eye irritation]; H332 (100%): Harmful if inhaled [Warning Acute toxicity, inhalation] Source: European Chemicals Agency (ECHA)
  • Precautionary Statement Codes: P210, P233, P240, P241, P242, P243, P261, P264, P264+P265, P271, P280, P302+P352, P303+P361+P353, P304+P340, P305+P351+P338, P317, P321, P332+P317, P337+P317, P362+P364, P370+P378, P403+P235, 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 39 reports by companies from 2 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)
  • Health Effects: Styrene causes nervous system depression and may be carcinogenic. Animals studies have also shown that hearing loss and liver damage may occur. (L1831, L1832) Source: Toxin and Toxin Target Database (T3DB)
  • NFPA Health Rating: 2 - Materials that, under emergency conditions, can cause temporary incapacitation or residual injury. Source: Hazardous Substances Data Bank (HSDB)
  • NFPA Fire Rating: 3 - Liquids and solids that can be ignited under almost all ambient temperature conditions. Materials produce hazardous atmospheres with air under almost all ambient temperatures or, though unaffected by ambient temperatures, are readily ignited under almost all conditions. Source: Hazardous Substances Data Bank (HSDB)
  • NFPA Instability Rating: 2 - Materials that readily undergo violent chemical changes at elevated temperatures and pressures. Source: Hazardous Substances Data Bank (HSDB)
  • NFPA Specific Notice: W - No water: Materials that react violently or explosively with water. Source: Hazardous Substances Data Bank (HSDB)
  • Toxicity Summary: IDENTIFICATION AND USE: Styrene is a colorless to yellowish, oily liquid. It is used in the manufacture of plastics, synthetic rubber, and resins, and as an insulator. It is also used as a flavoring agent for ice cream and candy. HUMAN STUDIES: Humans acutely exposed to styrene by inhalation to 800 ppm (3.4 mg/L) for 3 hr experience immediate eye and throat irritation, increased nasal mucous secretion, metallic taste, drowsiness, and vertigo. After test termination, slight muscular weakness, accompanied by inertia and depression were noted. Long-term contact with styrene results in blistering of the skin and development of dermatitis, which is thought to result from defatting of the skin. Effects on the liver (e.g., increased serum bile acid and enhanced activity of plasma enzymes) and reproductive system (e.g., decreased frequency of births and increased frequency of spontaneous abortions in female workers) have been reported. Epidemiologic studies found styrene workers had increased mortality or incidences of lymphohematopoietic cancers (leukaemia or lymphoma or all), with suggestive evidence for pancreatic and esophageal tumors. No adequate human studies are available for styren Source: Hazardous Substances Data Bank (HSDB)
  • Toxicity Summary: Styrene 7,8-oxide, a metabolite of styrene, can form DNA adducts by binding to deoxyguanosine. It is also mutagenic and causes increased frequency of sister chromatid exchange, chromosomal aberrations, micronucleated cells, and DNA strand breaks. (L1831) Source: Toxin and Toxin Target Database (T3DB)
  • Environmental Bioconcentration: BCF ranges of 15-140 and 12-113 were measured in fish for styrene using carp (Cyprinus carpio) which were exposed over an 8-week period to 0.3 and 0.03 mg/L, respectively(1). A BCF of 13.5 was measured in goldfish for styrene(2). According to a classification scheme(3), these measured BCF values suggest the potential for bioconcentration in aquatic organisms is low to high(SRC). Calculated biomagnification factors (BMF) for styrene in water respiring organisms (zooplankton, forage and predatory fish) and air breathing organisms (reptile, amphibian, sea bird, marine mammal, terrestrial herbivore and carnivore, human) were all less than 1(4). [ Source: Hazardous Substances Data Bank (HSDB)
  • Environmental Fate: TERRESTRIAL FATE: Based on a classification scheme(1), an experimental Koc value of 912(2), indicates that styrene is expected to have low mobility in soil(SRC). Volatilization of styrene from moist soil surfaces may be an important fate process(SRC) given a Henry's Law constant of 2.75X10-3 atm-cu m/mole(3). Styrene is expected to volatilize from dry soil surfaces(SRC) based upon a vapor pressure of 6.4 mm Hg at 25 °C(4). In an experimental study using loamy soil, 26% of applied styrene (2 mg/kg) volatilized after 31 days(5); volatilization of styrene from soil surfaces is expected to be slower than in water(6). A 100% of theoretical BOD after 2 weeks using activated sludge in the Japanese MITI test(7) suggests that biodegradation is an important environmental fate process in soil(SRC). Source: Hazardous Substances Data Bank (HSDB)
  • Environmental Fate: AQUATIC FATE: Based on a classification scheme(1), an experimental Koc value of 912(2), indicates that styrene is expected to adsorb to suspended solids and sediment(SRC). Volatilization from water surfaces is expected(3) based upon a Henry's Law constant of 2.75X10-3 atm-cu m/mole(4). Using this Henry's Law constant and an estimation method(3), volatilization half-lives for a model river and model lake are 3 hours and 4 days, respectively(SRC). According to a classification scheme(5), measured BCF ranges from 12-140 in carp(6), suggests the potential for bioconcentration in aquatic organisms is high to low(SRC). A 100% of theoretical BOD after 2 weeks using activated sludge in the Japanese MITI test(7) suggests that biodegradation is an important environmental fate process in water(SRC). Source: Hazardous Substances Data Bank (HSDB)
  • Environmental Fate: ATMOSPHERIC FATE: According to a model of gas/particle partitioning of semivolatile organic compounds in the atmosphere(1), styrene, which has a vapor pressure of 6.4 mm Hg at 25 °C(2), is expected to exist solely as a vapor in the ambient atmosphere. Vapor-phase styrene is degraded in the atmosphere by reaction with photochemically-produced hydroxyl radicals(SRC); the half-life for this reaction in air is estimated to be 6.6 hours(SRC), calculated from its rate constant of 5.8X10-11 cu cm/molecule-sec at 25 °C(3). Vapor-phase styrene is also degraded in the atmosphere by reaction with ozone and nitrate radicals; the half-lives for these reactions in air are 24 and 3.7 hours, respectively(4). Styrene does not strongly absorb light at wavelengths above 270 nm(5) and, therefore, is not expected to be susceptible to direct photolysis by sunlight since sunlight consists of wavelengths above 290 nm(SRC). Source: Hazardous Substances Data Bank (HSDB)
  • Consumer Uses: Antioxidant; Fuel agents; Monomers; Binder; Solvent; Adhesion/cohesion promoter; Intermediate; Filler; Not Known or Reasonably Ascertainable; Viscosity modifiers Source: EPA Chemical Data Reporting (CDR)
  • Industry Uses: Plasticizer; Filler; Not Known or Reasonably Ascertainable; Intermediate; Etching agent; Solvent; Other; Monomers; Antioxidant; Fuel agents Source: EPA Chemical Data Reporting (CDR)
  • Uses: Styrene is used predominately in the production of polystyrene plastics and resins. Styrene is also used as an intermediate in the synthesis of materials used for ion exchange resins and to produce copolymers. Source: EPA Hazardous Air Pollutants
  • Sources/Uses: Styrene is used extensively in the manufacture of plastics, rubber, and resins. About 90,000 workers, including those who make boats, tubs and showers, are potentially exposed to styrene. [http://www.osha-slc.gov/SLTC/styrene/] Used to make polystyrene for packaging, insulation for buildings and refrigeration equipment, and disposable cups and containers; Also used in styrene-butadiene rubber, other polymers, and resins to make boats, shower stalls, tires, automotive parts, etc.; [ACGIH] Source: Haz-Map, Information on Hazardous Chemicals and Occupational Diseases
  • Industrial Processes with risk of exposure: Plastic Composites Manufacturing [Category: Industry]; Burning Synthetic Polymers [Category: Burn] Source: Haz-Map, Information on Hazardous Chemicals and Occupational Diseases
  • Activities with risk of exposure: Sculpturing plastics [Category: Hobbies]; Smoking cigarettes [Category: Food & Drugs] Source: Haz-Map, Information on Hazardous Chemicals and Occupational Diseases
  • Uses: Manufacture of plastics; synthetic rubber; resins; insulator. Source: Hazardous Substances Data Bank (HSDB)
  • Uses: Polystyrene; SBR /styrene-butadiene-rubber/, ABS /acrylonitrile-butadiene-styrene/ and SAN /styrene-acrylonitrile/ resins; protective coatings (styrene-butadiene latex; alkyds); styrenated polyesters; rubber-modified polystyrene; copolymer resins; intermediate. Source: Hazardous Substances Data Bank (HSDB)
  • Uses: Reported uses (ppm):; Table: Reported uses (ppm): (Flavor and Extract Manufacturers' Association) [Table#625] Source: Hazardous Substances Data Bank (HSDB)
  • Uses: The major uses for styrene are in plastics, latex paints and coatings, synthetic rubbers, polyesters and styrene-alkyd coatings. The broad spectrum of uses of these products includes construction, packaging, automotive and household goods. Packaging is the single largest application for styrenecontaining resins, particularly foams, used as fillers and cushioning. Construction applications include pipes, fittings, tanks, lighting fixtures and corrosion-resistant products. Household goods include synthetic marble, flooring, disposable tableware and moulded furnishings. Transport applications range from tyres to reinforced plastics and automobile body putty. Source: Hazardous Substances Data Bank (HSDB)
  • Uses: For more Uses (Complete) data for Styrene (6 total), please visit the HSDB record page. Source: Hazardous Substances Data Bank (HSDB)
  • Uses: Styrene is used to make plastics and rubber. It is a precursor to polystyrene and may be found in insulation, fiberglass, plastic pipes, automobile parts, shoes, drinking cups and other food containers, and carpet backing. Low levels of styrene also occur naturally in a variety of foods such as fruits, vegetables, nuts, beverages, and meats. Small amounts of styrene can be transferred to food from styrene-based packaging material. (L1831) Source: Toxin and Toxin Target Database (T3DB)

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
EMBL-EBI ChEBIExact match2026-08-31
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
ASEAN Cosmetic Directive annexes
Source reference
ASEAN Annex II, reference 1575
Source record ID
II-1575
Source version
2026-1
Source language
English
Translation status
Original is English
Source updated
2026-06-22
Snapshot checked
2026-08-30 04:44 UTC
Validation method
pdfplumber ruled-table extraction with per-annex reviewed counts
SHA-256
ffad59f6c01a92c82042c54203ee14969425c2a82bd04c2f4012ff82513e69f1

Registered dataset notes

Dataset coverage
Banned, restricted and positive-list substances under the harmonised ASEAN framework
Authority note
Regional directive; member-state transitions and deviations still require local verification
Inspect the exact official sourceRegulator guidance

How this record fits the market dataset

2224
current ASEAN records
1728
records marked Prohibited
2224
records from this source version
1930
market records with CAS identity

Status distribution

Permitted list with conditions: 247Prohibited: 1728Restricted: 249

Condition text is present on 462 of 2224 current records. An empty condition field is interpreted according to the record type above; it is never converted into an unrestricted-use claim.

ASEAN market context

Complete regional annex dataset

Coverage version: ASEAN Cosmetic Directive annexes 2026-1, 22 June 2026

Annexes II, III, IV, VI and VII covering prohibited, restricted and positive-list substances.

Verification checklist

  1. Search all ACD annexes by name and identifiers.
  2. Apply product type, maximum level and warning conditions.
  3. Confirm the target member state's adoption and transition date.
  4. Complete the local notification and responsible-company requirements.

Official market sources

Verification workflow and record completeness

Before using this result in a compliance decision

  1. Confirm that “Styrene” and every CAS/EC identifier refer to the material in your supplier specification.
  2. Search all ACD annexes by name and identifiers.
  3. Apply product type, maximum level and warning conditions.
  4. Confirm the target member state's adoption and transition date.
  5. Complete the local notification and responsible-company requirements.
  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 textNot present in source row
  • Effective dateNot supplied
  • Snapshot hash and methodAvailable

Questions this page answers

This official record identifies the substance as prohibited for cosmetic use in the stated market scope. Do not rely on a formulation containing this identity until the cited source, effective date and exact substance match have been verified.

A prohibition entry may contain no separate condition text because the regulatory outcome is the prohibition itself. Regional annex coverage does not replace member-state implementation dates, notifications or national deviations.

The record cites ASEAN Annex II, reference 1575, source version 2026-1. 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

Styrene. ASEAN Annex II, reference 1575. ASEAN. Source version 2026-1. CosIng Checker regulatory record: https://cosingchecker.com/regulations/asean/records/3711/

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 ASEAN

This official record identifies the substance as prohibited for cosmetic use in the stated market scope.

Do not rely on a formulation containing this identity until the cited source, effective date and exact substance match have been verified.

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: Prohibited
  • Legal role: Binding rule
  • Source version: 2026-1

What it does not prove

Regional annex coverage does not replace member-state implementation dates, notifications or national deviations.

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