Methacrylonitrile
[CAS# 126-98-7]

Identification

• Classification: Chemical reagent >> Organic reagent >> Cyanide/nitrile
• Name: Methacrylonitrile
• Synonyms: 2-Methyl-2-propenenitrile
• Molecular Formula: C₄H₅N
• Molecular Weight: 67.09
• CAS Registry Number: 126-98-7
• EC Number: 204-817-5

Properties

• Density: 0.8
• Melting point: -35.8 ºC
• Boiling point: 90-92 ºC
• Refractive index: 1.399-1.401
• Flash point: 12 ºC
• Water solubility: 2.57 g/100 mL (20 ºC)

Safety Data

• Hazard Symbols: GHS02;GHS06 Danger
• Hazard Statements: H225-H331-H311-H301-H317
• Safety Description: S16;S18;S29;S45;S9

Hazard Classification

Hazard	Class	Category Code	Hazard Statement
Acute toxicity	Acute Tox.	3	H301
Flammable liquids	Flam. Liq.	2	H225
Skin sensitization	Skin Sens.	1	H317
Acute toxicity	Acute Tox.	3	H311
Acute toxicity	Acute Tox.	2	H330
Acute toxicity	Acute Tox.	3	H331
Specific target organ toxicity - single exposure	STOT SE	1	H370
Reproductive toxicity	Repr.	1A	H360
Specific target organ toxicity - repeated exposure	STOT RE	1	H372
Acute hazardous to the aquatic environment	Aquatic Acute	3	H402

• Transport Information: UN 3079