Acetonitrile 

CAS No.: 75-05-8 | EC No.: 200-835-2

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1. Chemical Identification

Property	Specification
IUPAC Name	Ethanenitrile
Molecular Formula	C₂H₃N
Molecular Weight	41.05 g/mol
Appearance	Clear colorless liquid
Color (APHA)	<10
Density	0.786 g/mL at 25°C
Melting Point	-45°C
Boiling Point	81-82°C
Refractive Index	n<sup>20</sup><sub>D</sub> 1.344
pKa	25 (at 25°C)
Flash Point	6°C (closed cup)

Synonyms:
Methyl cyanide, AN, Cyanomethane

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2. Key Applications

Industrial Solvent

• Petroleum Industry:
  • Extraction of butadiene
  • Removal of tar/phenols from hydrocarbons
• Vegetable Oil Processing: Fatty acid extraction
• Textile Industry: Synthetic fiber production

Pharmaceutical Sector

• Reaction Medium: Steroid drug recrystallization
• Vitamin B1 Synthesis: Key intermediate

Specialty Uses

• Polar Solvent System: 84% azeotrope with water (bp 76°C)
• Agriculture: Triazine nitrogen fertilizer component
• Perfumery: Fragrance intermediate
• Inorganic Chemistry: Ligand in coordination complexes

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3. Product Advantages

✔ High Purity – UV-spectroscopy grade available
✔ Versatile Solvent – Miscible with water/organics
✔ Low Viscosity – Excellent penetration properties

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4. Physical & Chemical Properties

• Dielectric Constant: 37.5 (20°C)
• Vapor Pressure: 72.8 mmHg at 20°C
• Azeotrope Composition: 84% AN + 16% H₂O

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5. Handling & Storage

Parameter	Requirement
Storage Temp	15-25°C (cool, ventilated area)
Packaging	200L steel drums/IBCs
Shelf Life	24 months
Special Notes	Flameproof area required

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6. Safety Information

Danger!

• H225: Highly flammable liquid/vapor
• H302+H312+H332: Harmful if swallowed/in contact skin/inhaled
• H319: Causes serious eye irritation

Protective Measures:

• P210: Keep away from heat/sparks/open flames
• P280: Chemical-resistant gloves/face shield required
• P301+P330+P331: IF SWALLOWED: Rinse mouth, DO NOT induce vomiting

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7. Quality Specifications

• Purity: ≥99.9% (GC)
• Water Content: ≤0.1%
• UV Cutoff: 190 nm

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Disclaimer:
This technical information serves as professional reference only. Users must comply with local regulations and obtain necessary handling certifications. Always consult SDS before use.