GHS Classification Result

Chemical Name:tert-butyl alpha,alpha-dimethylbenzyl peroxide
CAS:3457-61-2

Result:
ID: 20A2229
Classifier: Ministry of Health, Labour and Welfare (MHLW), Ministry of the Environment (MOE)
Year Classified: FY2008
Reference Manual: GHS Classification Guidance by the Japanese Government (Sep, 2008)

PHYSICAL HAZARDS
Hazard class Classification Symbol Signal word Hazard statement Precautionary statement Rationale for the classification
1 Explosives Not classified - - - - The test substance contains oxygen-containing chemical groups associated with explosive properties; the calculated value of its oxygen balance is -261.2, which is lower than -200.
2 Flammable gases (including chemically unstable gases) Not applicable - - - - Liquid (GHS definition)
3 Aerosols Not applicable - - - - Not aerosol products.
4 Oxidizing gases Not applicable - - - - Liquid (GHS definition)
5 Gases under pressure Not applicable - - - - Liquid (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 ...
Its flash point is 55degC (GESTIS), which is between 23 and 60degC.
7 Flammable solid Not applicable - - - - Liquid (GHS definition)
8 Self-reactive substances and mixtures Not applicable - - - - It is a liquid classified as organic peroxide.
9 Pyrophoric liquids Classification not possible - - - - No data available.
10 Pyrophoric solids Not applicable - - - - Liquid (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 - - - - The chemical structure of the substance does not contain metals or metalloids (B, Si, P, Ge, As, Se, Sn, Sb, Te, Bi, Po, At).
13 Oxidizing liquids Not applicable - - - - The substance contains oxygen (but not fluorine or chlorine) which is chemically bonded only to carbon or hydrogen.
14 Oxidizing solids Not applicable - - - - Liquid (GHS definition)
15 Organic peroxides Type E Warning H242: Heating may cause a fire P411+P235: Store at temperatures not exceeding ... degC/... degF. Keep cool.
P210: Keep away from heat/sparks/open flames/hot surfaces. ? No smoking.
P220: Keep/Store away from clothing/.../combustible materials.
P234: Keep only in original container.
P280: Wear protective gloves/protective clothing/eye protection/face protection.
P410: Protect from sunlight.
P420: Store away from other materials.
P501: Dispose of contents/container to ...
The material with its content consisting of 42-100% of the substance is classified into UN number 3107: type E.
16 Corrosive to metals Classification not possible - - - - No data available.

HEALTH HAZARDS
Hazard class Classification Symbol Signal word Hazard statement Precautionary statement Rationale for the classification
1 Acute toxicity (Oral) Category 4 Warning H302: Harmful if swallowed P301+P312: IF SWALLOWED: Call a POISON CENTER or doctor/physician if you feel unwell.
P264: Wash ... thoroughly after handling.
P270: Do not eat, drink or smoke when using this product.
P330: Rinse mouth.
P501: Dispose of contents/container to ...
Since its rat LD50 = 518 mg/kg (PATTY (5th, 2001), the substance was classified into Category 4.
1 Acute toxicity (Dermal) Classification not possible - - - - No data available.
1 Acute toxicity (Inhalation: Gases) Not applicable - - - - Liquid (GHS definition)
1 Acute toxicity (Inhalation: Vapours) Classification not possible - - - - No data available.
1 Acute toxicity (Inhalation: Dusts and mists) Not classified - - - - In 4-hour inhalation tests using rats, no death was observed at the concentration of 152 mg/L (PATTY (5th, 2001) vol.6). Thus, the substance was classified into "Not classified". Since its saturated vapour concentration is 42.05 mg/L, the test was presumably carried out in a mist state.
2 Skin corrosion/irritation Classification not possible - - - - The substance is documented to be a severe irritant (PATTY (5th, 2001), but details such as of animal species tested and results are not available. As such, classification is not possible. In the EU classification, the substance is rated as Xi; R38.
3 Serious eye damage/eye irritation Classification not possible - - - - The substance is documented to be not an irritant (PATTY (5th, 2001)), but details such as of animal species tested and results are unavailable. As such, classification is not possible.
4 Respiratory sensitization Classification not possible - - - - No data available.
4 Skin sensitization Classification not possible - - - - No data available.
5 Germ cell mutagenicity Classification not possible - - - - No data available.
6 Carcinogenicity Classification not possible - - - - No data available.
7 Reproductive toxicity Classification not possible - - - - No data available.
8 Specific target organ toxicity - Single exposure Classification not possible - - - - No data available.
9 Specific target organ toxicity - Repeated exposure Classification not possible - - - - No data available.
10 Aspiration hazard Classification not possible - - - - No data available.

ENVIRONMENTAL HAZARDS
Hazard class Classification Symbol Signal word Hazard statement Precautionary statement Rationale for the classification
11 Hazardous to the aquatic environment (Acute) Classification not possible - - - - No data available.
11 Hazardous to the aquatic environment (Long-term) Classification not possible - - - - No data available.


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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