Acetonitrile

grade

gradient grade

vapor pressure

72.8 mmHg ( 20 °C)

assay

≥99.9% (GC)

autoignition temp.

973 °F

shelf life

limited shelf life, expiry date on the label

technique(s)

HPLC: suitable

impurities

≤0.0005% free alkali (as NH₃), ≤0.005% free acid (as CH₃COOH), ≤0.02% water, ≤1 ppb quinine fluor., 254 nm, ≤1 ppb quinine fluor., 365 nm

evapn. residue

≤0.001%

mp

−45 °C (lit.)

absorption

<1 mAU at 254 nm, <5 mAU at 210 nm

λ

1 cm path, H₂O reference

UV absorption

λ: 200 nm A_max: ≤0.1, λ: 210 nm A_max: ≤0.035, λ: 220 nm A_max: ≤0.02, λ: 230 nm A_max: ≤0.01, λ: 240 nm A_max: ≤0.005