Styrene
[CAS# 100-42-5]

Identification

• Classification: Organic raw materials >> Hydrocarbon compounds and their derivatives >> Aromatic hydrocarbon
• Name: Styrene
• Synonyms: Ethenylbenzene
• Molecular Formula: C₈H₈
• Molecular Weight: 104.15
• CAS Registry Number: 100-42-5
• EC Number: 202-851-5
• FEMA: 3233

Properties

• Density: 0.906
• Melting point: -31 ºC
• Boiling point: 145-146 ºC
• Refractive index: 1.546-1.548
• Flash point: 31 ºC
• Water solubility: 0.3 g/L (20 ºC)

Safety Data

• Hazard Symbols: GHS02;GHS08;GHS07 Danger
• Hazard Statements: H226-H361d-H332-H372
• Safety Description: S23

Hazard Classification

Hazard	Class	Category Code	Hazard Statement
Skin irritation	Skin Irrit.	2	H315
Flammable liquids	Flam. Liq.	3	H226
Eye irritation	Eye Irrit.	2	H319
Acute toxicity	Acute Tox.	4	H332
Aspiration hazard	Asp. Tox.	1	H304
Chronic hazardous to the aquatic environment	Aquatic Chronic	3	H412
Specific target organ toxicity - repeated exposure	STOT RE	1	H372
Reproductive toxicity	Repr.	2	H361
Specific target organ toxicity - single exposure	STOT SE	3	H335
Reproductive toxicity	Repr.	2	H361d
Carcinogenicity	Carc.	2	H351
Acute toxicity	Acute Tox.	3	H331
Germ cell mutagenicity	Muta.	2	H341
Reproductive toxicity	Repr.	1B	H360
Specific target organ toxicity - single exposure	STOT SE	1	H335
Specific target organ toxicity - single exposure	STOT SE	1	H370
Eye irritation	Eye Irrit.	2A	H319
Reproductive toxicity	Repr.	2	H361d

• Transport Information: UN 2055