Melting point :?45 °C (lit.)
Boiling point :81-82 °C (lit.)
Density :0.786 g/mL at 25 °C (lit.)
vapor density :1.41 (vs air)
vapor pressure :72.8 mm Hg ( 20 °C)
refractive index :n20/D 1.344(lit.)
Flash point :48 °F
storage temp. :Store at +5°C to +30°C.
solubility :organic solvents: soluble(lit.)
pka :25(at 25℃)
form :liquid
color :<10(APHA)
Specific Gravity :approximate 0.78(20/20℃)
Odor :Aromatic ether-like odor detectable at 40 ppm
Relative polarity :0.46
explosive limit :3.0-17%(V)
Odor Threshold :13ppm
Water Solubility :miscible
λmax :λ: 195 nm Amax: ≤0.12
λ: 200 nm Amax: ≤0.032
λ: 230 nm Amax: ≤0.0044
λ: 235 nm Amax: ≤0.0044
λ: 250 nm Amax: ≤0.0044
λ: 400 nm Amax: ≤0.0044 Merck :14,70
BRN :741857
Henry's Law Constant :7.30 at 5 °C, 8.90 at 10 °C, 11.6 at 15 °C, 14.6 at 20 °C, 17.6 at 25 °C (headspace-GC, Ji and Evans, 2007)
Exposure limits :TLV-TWA 70 mg/m³ (40 ppm) (ACGIH and OSHA); STEL 105 mg/m³ (60 ppm) (ACGIH); IDLH 4000 ppm (NIOSH).
Dielectric constant :37.5（21℃）
Stability :Incompatible with alkali metals, acids, bases, reducing agents and oxidizing agents. Highly flammable.
LogP :-0.340
CAS DataBase Reference :75-05-8(CAS DataBase Reference)
NIST Chemistry Reference :Acetonitrile(75-05-8)
EPA Substance Registry System :Acetonitrile (75-05-8)

Symbol(GHS):
Signal word:	Danger
Hazard statements:	Code Hazard statements Hazard class Category Signal word Pictogram P-Codes H225 Highly Flammable liquid and vapour Flammable liquids Category 2 Danger P210,P233, P240, P241, P242, P243,P280, P303+ P361+P353, P370+P378,P403+P235, P501 H319 Causes serious eye irritation Serious eye damage/eye irritation Category 2A Warning P264, P280, P305+P351+P338,P337+P313P
Precautionary statements:	P210 Keep away from heat/sparks/open flames/hot surfaces. — No smoking. P280 Wear protective gloves/protective clothing/eye protection/face protection. P301+P312 IF SWALLOWED: call a POISON CENTER or doctor/physician IF you feel unwell. P303+P361+P353 IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower. P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.