Pharmaceutical Materials

CAS Number: 4786-20-3

Molecular Formula: C4H5N

Molecular Weight: 67.09

Appearance: Colorless liquid

Melting Point: -51.5°C

Boiling Point: 120.5°C at 760 mmHg

Flash Point: 20°C

Density: 0.8±0.1 g/cm3

It is also known as 2-Butenenitrile and has potential hazards, such as being flammable and explosive when exposed to fire, high heat, or oxidants.

 

Attribute	Details
Chemical Name	Crotononitrile
Synonyms	2-Butenenitrile; (E)-2-Butenenitrile; trans-Crotononitrile; β-Methylacrylonitrile; 1-Cyanopropene
CAS Number	4786-20-3
Molecular Formula	C4H5N
Molecular Weight	67.09 g/mol
Appearance	Colorless to pale yellow liquid
Physical Properties	Density: 0.8±0.1 g/cm³; Boiling Point: 120.5±0.0°C at 760 mmHg; Melting Point: -51.5°C; Flash Point: 20.0±0.0°C; Refractive Index: 1.418; Vapor Pressure: 15.2±0.2 mmHg at 25°C
Solubility	Soluble in organic solvents such as ether and acetone
Chemical Properties	Forms salts with acids and undergoes typical nitrile reactions, including hydrolysis to amides or acids. Reactive towards nucleophiles and oxidizing agents.
Uses	Used as an intermediate in the synthesis of organic compounds, including pesticides, dyes, and pharmaceuticals. Also employed in the production of resins and plasticizers.
Safety Information	Highly toxic and irritating to eyes, skin, and respiratory tract. May cause severe burns and respiratory problems. Handle with caution, avoiding contact with incompatible materials. Store in a cool, dry place, away from heat and sources of ignition. Wear appropriate protective clothing, gloves, and eye/face protection during handling.
Hazard Statements	R23/24/25: Toxic by inhalation, in contact with skin, and if swallowed; R34: Causes burns.
Precautionary Statements	S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice; S36/37/39: Wear suitable protective clothing, gloves, and eye/face protection; S45: In case of accident or if you feel unwell, seek medical advice immediately (show the label where possible); S61: Avoid release to the environment. Refer to special instructions/Safety data sheets.

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