Acetonitrile CAS No. 75-05-8

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 butadieneRemoval of tar/phenols from hydrocarbonsVegetable Oil Processing: Fatty acid extractionTextile Industry: Synthetic fiber production

Pharmaceutical Sector

Reaction Medium: Steroid drug recrystallizationVitamin B1 Synthesis: Key intermediate

Specialty Uses

Polar Solvent System: 84% azeotrope with water (bp 76°C)Agriculture: Triazine nitrogen fertilizer componentPerfumery: Fragrance intermediateInorganic 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°CAzeotrope 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/vaporH302+H312+H332: Harmful if swallowed/in contact skin/inhaledH319: Causes serious eye irritation

Protective Measures:

P210: Keep away from heat/sparks/open flamesP280: Chemical-resistant gloves/face shield requiredP301+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.

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