GHS Classification Result

Chemical Name：alpha-Methylstyrene
CAS：98-83-9

Result：
ID: 207
Classifier: Inter-ministerial Committee on GHS
Year Classified: FY2006
Reference Manual: GHS Classification Manual （10 Feb, 2006）

PHYSICAL HAZARDS
Hazard class Classification Symbol Signal word Hazard statement Precautionary statement Rationale for the classification
1 Explosives Not applicable - - - - Containing no chemical groups with explosive properties
2 Flammable gases （including chemically unstable gases） Not applicable - - - - Classified as "liquid" according to GHS definition
3 Aerosols Not applicable - - - - Not aerosol products
4 Oxidizing gases Not applicable - - - - Classified as "liquid" according to GHS definition
5 Gases under pressure Not applicable - - - - Classified as "liquid" according to GHS definition
6 Flammable liquids Category 3 Warning H226: Flammable liquid and vapour P303+P361+P353: IF ON SKIN （or hair）: Remove/Take off immediately all contaminated clothing. Rinse skin with water/shower.
P370+P378: In case of fire: Use ... for extinction.
P403+P235: Store in a well-ventilated place. Keep cool.
P210: Keep away from heat/sparks/open flames/hot surfaces. - No smoking.
P233: Keep container tightly closed.
P240: Ground/bond container and receiving equipment.
P241: Use explosion-proof electrical/ventilating/lighting/.../equipment.
P242: Use only non-sparking tools.
P243: Take precautionary measures against static discharge.
P280: Wear protective gloves/protective clothing/eye protection/face protection.
P501: Dispose of contents/container to ... 		The flash point is 54degC (ICSC (2004)), which is classified into Category 3. Classified into Class 3, Packing Group III (UN#2303) (UN Recommendations on the Transport of Dangerous Goods).
7 Flammable solids Not applicable - - - - Classified as "liquid" according to GHS definition
8 Self-reactive substances and mixtures Not classified - - - - No data available, though containing unsaturated bonds. Classified into Class 3 (UN#2303) (UN Recommendations on the Transport of Dangerous Goods).
9 Pyrophoric liquids Not classified - - - - Not pyrophoric when in contact with air at ordinary temperatures: the auto-ignition temperature is 574degC (ICSC, 2004)
10 Pyrophoric solids Not applicable - - - - Classified as "liquid" according to GHS definition
11 Self-heating substances and mixtures Classification not possible - - - - Test methods applicable to liquid substances are not available
12 Substances and mixtures which, in contact with water, emit flammable gases Not applicable - - - - Containing no metals or metalloids (B, Si, P, Ge, As, Se, Sn, Sb, Te, Bi, Po, At)
13 Oxidizing liquids Not applicable - - - - Organic compounds containing no oxygen, fluorine and chlorine
14 Oxidizing solids Not applicable - - - - Classified as "liquid" according to GHS definition
15 Organic peroxides Not applicable - - - - Organic compounds containing no "-O-O-" structure
16 Corrosive to metals Not classified - - - - Classified into Class 3 (UN#2303) (UN Recommendations on the Transport of Dangerous Goods).

HEALTH HAZARDS
Hazard class Classification Symbol Signal word Hazard statement Precautionary statement Rationale for the classification
1 Acute toxicity （Oral） Category 5 - Warning H303: May be harmful if swallowed P312: Call a POISON CENTER or doctor/physician if you feel unwell. Based on the rat LD50 (oral route) value of 4,900mg/kg (SIDS (2002)).
1 Acute toxicity （Dermal） Not classified - - - - Based on the rabbit LD50 (dermal route) of 16mL/kg (equivalent to 14,500mg/kg) (SIDS (2002)).
1 Acute toxicity （Inhalation: Gases） Not applicable - - - - Due to the fact that the substance is "liquid" according to the GHS definition and inhalation of its gas is not expected.
1 Acute toxicity （Inhalation: Vapours） Classification not possible - - - - No data available
1 Acute toxicity （Inhalation: Dusts and mists） Classification not possible - - - - No data available
2 Skin corrosion/irritation Category 2 Warning H315: Causes skin irritation P302+P352: IF ON SKIN: Wash with plenty of soap and water.
P332+P313: If skin irritation occurs: Get medical advice/attention.
P264: Wash ... thoroughly after handling.
P280: Wear protective gloves/protective clothing/eye protection/face protection.
P321: Specific treatment （see ... on this label）.
P362: Take off contaminated clothing and wash before reuse. 		Based on the description in the report on rabbit skin irritation tests (CERI Hazard Data 2001-2 (2002)): "The substance induced moderate irritation" (though exposure duration is not presented).
3 Serious eye damage/eye irritation Category 2A Warning H319: Causes serious eye irritation P305+P351+P338: IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
P337+P313: If eye irritation persists: Get medical advice/attention.
P264: Wash ... thoroughly after handling.
P280: Wear protective gloves/protective clothing/eye protection/face protection. 		Based on the description in the report on rabbit eye irritation tests (SIDS (2002)): "The substance induced moderate irritation."
4 Respiratory sensitization Classification not possible - - - - No data available
4 Skin sensitization Classification not possible - - - - Insufficient data are available, though human epidemiological evidence suggests sensitization for human skin (CERI Hazard Data 2001-40 (2002)).
5 Germ cell mutagenicity Category 2 Warning H341: Suspected of causing genetic defects P308+P313: IF exposed or concerned: Get medical advice/attention.
P201: Obtain special instructions before use.
P202: Do not handle until all safety precautions have been read and understood.
P281: Use personal protective equipment as required.
P405: Store locked up.
P501: Dispose of contents/container to ... 		Based on the absence of data on multi-generation mutagenicity tests, germ cell mutagenicity tests in vivo and germ cell genotoxicity tests in vivo, and positive data on somatic cell mutagenicity tests in vivo (micronucleus tests), described in NTP DB (Access on Mar., 2006), the Ministry of Health, Labour and Welfare (1996) and CERI Hazard Data 2001-40 (2002).
6 Carcinogenicity Classification not possible - - - - No data available
7 Reproductive toxicity Category 2 Warning H361: Suspected of damaging fertility or the unborn child P308+P313: IF exposed or concerned: Get medical advice/attention.
P201: Obtain special instructions before use.
P202: Do not handle until all safety precautions have been read and understood.
P281: Use personal protective equipment as required.
P405: Store locked up.
P501: Dispose of contents/container to ... 		Combined studies on repeated dose/reproductive/developmental toxicity suggested adverse developmental effects (litter loss and body weight reduction) at doses inducing maternal toxicity, described in the Ministry of Health, Labour and Welfare (1996) and SIDS (2002).
8 Specific target organ toxicity - Single exposure Category 2 (nervous system), Category 3 (respiratory tract irritation) Warning H371: May cause damage to organs (nervous system)
H335: May cause respiratory irritation (respiratory tract irritation) 		P309+P311: IF exposed or if you feel unwell: Call a POISON CENTER or doctor/physician.
P260: Do not breathe dust/fume/gas/mist/vapours/spray.
P264: Wash ... thoroughly after handling.
P270: Do not eat, drink or smoke when using this product.
P405: Store locked up.
P501: Dispose of contents/container to ...
P304+P340: IF INHALED: Remove victim to fresh air and keep at rest in a position comfortable for breathing.
P403+P233: Store in a well-ventilated place. Keep container tightly closed.
P261: Avoid breathing dust/fume/gas/mist/vapours/spray.
P271: Use only outdoors or in a well-ventilated area.
P312: Call a POISON CENTER or doctor/physician if you feel unwell. 		Based on the human evidence including "irritation of the upper respiratory tract" and the evidence from animal studies: "within 5 minutes, lid closure was observed; by 90 minutes, impaired coordination occurred; by 4 hours, debility; by 5 hours, anesthetic leprosy was observed" (CERI Hazard Data 2001-40 (2002)). The effects on experimental animals were observed at dosing levels within the guidance value ranges for Category 2.
9 Specific target organ toxicity - Repeated exposure Category 1 (central nervous system), Category 2 (kidney, liver, respiratory system) Danger
Warning 		H372: Cause damage to organs through prolonged or repeated exposure (central nervous system)
H373: May cause damage to organs through prolonged or repeated exposure (kidney, liver, respiratory system) 		P260: Do not breathe dust/fume/gas/mist/vapours/spray.
P264: Wash ... thoroughly after handling.
P270: Do not eat, drink or smoke when using this product.
P314: Get medical advice/attention if you feel unwell.
P501: Dispose of contents/container to ... 		Based on the human evidence: "prolonged exposure by inhalation induces suppression of the central nervous system" (CERI Hazard Data 2001-40 (2002)). Also based on the evidence from animal studies including "increased hyaline droplet and basophilic changes in the renal tubular epithelium, eosinophilic changes in hepatocyte, elevated GPT" (the Ministry of Health, Labour and Welfare (1996)), "atrophy and hyperplasia of the nasal mucus-secreting glands, atrophy and hyperplasia of the olfactory epithelium" (MOE Risk Assessment vol. 4 (2005)). The effects on experimental animals were observed at dosing levels within the guidance value ranges for Category 2.
10 Aspiration hazard Category 1 Danger H304: May be fatal if swallowed and enters airways P301+P310: IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician.
P331: Do NOT induce vomiting.
P405: Store locked up.
P501: Dispose of contents/container to ... 		Based on the fact that the substance is a hydrocarbon according to the GHS definition and has a dynamic viscosity of 1.032mm2/s (20degC).

ENVIRONMENTAL HAZARDS
Hazard class Classification Symbol Signal word Hazard statement Precautionary statement Rationale for the classification
11 Hazardous to the aquatic environment （Acute） Category 2 - - H401: Toxic to aquatic life P273: Avoid release to the environment.
P501: Dispose of contents/container to ... 		It was classified into Category 2 from 48 hours EC50=2.6mg/L of the crustacea (Daphnia magna) (MOE eco-toxicity tests of chemicals, 1996).
11 Hazardous to the aquatic environment （Long-term） Category 2 - H411: Toxic to aquatic life with long lasting effects P273: Avoid release to the environment.
P391: Collect spillage.
P501: Dispose of contents/container to ... 		Although acute toxicity was Category 2 and the bio-accumulation potential was low (BCF=140(Existing Chemical Safety Inspections Data)), since there was no rapidly degrading (the decomposition by BOD: 0%(Existing Chemical Safety Inspections Data)), it was classified into Category 2.


NOTE:
* Classification was conducted by relevant Japanese Ministries in accordance with GHS Classification Guidance for the Japanese Government, and is intended to provide a reference for preparing GHS labelling and SDS for users.
* This is a provisional English translation of classification results and is subject to revision without notice.
* The responsibility for any resulting GHS labelling and SDS referenced from this site is with users.

Reference：
Reference Manual
Definitions / Abbreviations
Model Label by MHLW

 MHLW Website （in Japanese Only）
Model SDS by MHLW

 MHLW Website （in Japanese Only）

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