Acetonitrile

CAS 75-05-8 CH₃CN MW 41.1000 Danger
Flame Flame
Skull and Crossbones Skull and Crossbones
Exclamation Mark Exclamation Mark
Health Hazard Health Hazard
Emergency: 911 | Poison Control: 1-800-222-1222

Safety Data Sheets

ManufacturerDownload
Alfa Aesar Download PDF
Sigma Aldrich Download PDF
TCI Download PDF

Hazard Statements

CodeStatementHazard Class
H225 Highly Flammable liquid and vapor Flammable liquids
H303 May be harmful if swallowed Acute toxicity, oral
H311 Toxic in contact with skin Acute toxicity, dermal
H319 Causes serious eye irritation Serious eye damage/eye irritation
H341 Suspected of causing genetic defects Germ cell mutagenicity
H370 Causes damage to organs Specific target organ toxicity, single exposure
H373 May causes damage to organs through prolonged or repeated exposure Specific target organ toxicity, repeated exposure

Precautionary Statements

CodeStatement
P203 Obtain, read and follow all safety instructions before use.
P210 Keep away from heat, hot surface, sparks, open flames and other ignition sources. No smoking.
P233 Keep container tightly closed.
P240 Ground/bond container and receiving equipment.
P241 Use explosion-proof [electrical/ventilating/lighting/.../] equipment.
P242 Use only non-sparking tools.
P243 Take precautionary measures against static discharge.
P260 Do not breathe dust/fume/gas/mist/vapors/spray.
P262 Do not get in eyes, on skin, or on clothing.
P264 Wash hands [and ...] thoroughly after handling.
P264+P265 Wash hands [and ...] thoroughly after handling. Do not touch eyes.
P270 Do not eat, drink or smoke when using this product.
P280 Wear protective gloves/protective clothing/eye protection/face protection/hearing protection/...
P301+P317 IF SWALLOWED: Get medical help.
P302+P352 IF ON SKIN: wash with plenty of water/...
P303+P361+P353 IF ON SKIN (or hair): Take off Immediately all contaminated clothing. Rinse SKIN with water [or shower].
P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses if present and easy to do - continue rinsing.
P308+P316 IF exposed or concerned: Get emergency medical help immediately.
P316 Get emergency medical help immediately.
P318 if exposed or concerned, get medical advice.
P319 Get medical help if you feel unwell.
P321 Specific treatment (see information on this label and safety datasheet)).
P337+P317 If eye irritation persists: Get medical help.
P361+P364 Take off immediately all contaminated clothing and wash it before reuse.
P370+P378 In case of fire: Use ... to extinguish.
P403+P235 Store in a well-ventilated place. Keep cool.
P405 Store locked up.
P501 Dispose of contents/container to ...

Exposure Limits

OSHA PEL40 ppm
NIOSH REL20 ppm
NIOSH IDLH137 ppm
Skin NotationYes — can be absorbed through skin

Physical Properties

Colorless liquid with an aromatic odor.

Boiling Point179°F
Flash Point42°F (open cup)
Vapor Pressure73 mmHg
Specific Gravity0.787

NFPA 704 Diamond

3
2
0
Health Fire Reactivity

Target Organs

Lungs Skin Eyes Nervous System

Eye, nose, and throat irritation from vapor; skin and eye irritation from liquid; nervous system effects

Synonyms

cyanomethane; ethyl nitrile; methyl cyanide; ACN

Data Sources

Disclaimer: This information is compiled from public regulatory databases for reference only. It does not replace the manufacturer's Safety Data Sheet (SDS). Always consult the official SDS for your specific product before handling chemicals.

See something wrong? Report a data issue.