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34888

Sigma-Aldrich

Acetonitrile

for HPLC, for UV, ≥99.9% (GC)

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Synonym(s):
ACN, Cyanomethane, Ethyl nitrile, Methyl cyanide
Linear Formula:
CH3CN
CAS Number:
75-05-8
Molecular Weight:
41.05
Beilstein:
741857
EC Number:
200-835-2
MDL number:
MFCD00001878
eCl@ss:
39031501
PubChem Substance ID:
329755087
NACRES:
NA.03

grade

for HPLC, for UV

Quality Level

100

vapor density

1.41 (vs air)

vapor pressure

72.8 mmHg ( 20 °C)

Assay

≥99.9% (GC)

form

liquid

autoignition temp.

973 °F

expl. lim.

16 %

technique(s)

HPLC: suitable
UV/Vis spectroscopy: suitable

impurities

≤0.0002% free alkali (as NH3)
≤0.0005% non-volatile matter
≤0.002% free acid (as CH3COOH)
≤0.02% water (Karl Fischer)
≤0.5 ppb fluorescence (quinine) at 365 nm
≤1 ppb fluorescence (quinine) at 254 nm

transmittance

195 nm, ≥65%
200 nm, ≥88%
210 nm, ≥93%
235 nm, ≥99%

refractive index

n20/D 1.344 (lit.)

bp

81-82 °C (lit.)

mp

−45 °C (lit.)

density

0.786 g/mL at 25 °C (lit.)

format

neat

SMILES string

CC#N

InChI

1S/C2H3N/c1-2-3/h1H3

InChI key

WEVYAHXRMPXWCK-UHFFFAOYSA-N

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Other Notes

Important notice
  • The article number 34888-4X2.5L will be discontinued. Please order the single bottle 34888-2.5L which is physically identical with the same exact specifications.
  • The article number 34888-6X1L will be discontinued. Please order the single bottle 34888-1L which is physically identical with the same exact specifications.

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Pictograms

FlameExclamation mark
GHS02,GHS07

Signal Word

Danger

Hazard Classifications

Acute Tox. 4 Dermal - Acute Tox. 4 Inhalation - Acute Tox. 4 Oral - Eye Irrit. 2 - Flam. Liq. 2

Storage Class Code

3 - Flammable liquids

WGK

WGK 2

Flash Point(F)

35.6 °F - closed cup

Flash Point(C)

2.0 °C - closed cup

Regulatory Information

危险化学品

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