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Sigma-Aldrich

Acetonitrile

≥99.5% (GC), ACS reagent, puriss. p.a.

Synonym(s):

ACN, Cyanomethane, Ethyl nitrile, Methyl cyanide

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About This Item

Linear Formula:
CH3CN
CAS Number:
75-05-8
Molecular Weight:
41.05
Beilstein:
741857
EC Number:
200-835-2
MDL number:
MFCD00001878
UNSPSC Code:
12352001
PubChem Substance ID:
329747121

product name

Acetonitrile, puriss. p.a., ACS reagent, ≥99.5% (GC)

grade

ACS reagent
puriss. p.a.

Quality Level

200

vapor density

1.41 (vs air)
1.41 (vs air)

vapor pressure

72.8 mmHg ( 20 °C)
72.8 mmHg

Assay

≥99.5% (GC)

form

liquid

autoignition temp.

973 °F

expl. lim.

16 %
8 % (lit.)

impurities

≤0.001% free alkali (as NH3)
≤0.005% free acid (as CH3COOH)
≤0.1% benzene (GC)
≤0.2% propionitrile (GC)
≤0.2% water

evapn. residue

≤0.001%

refractive index

n20/D 1.344 (lit.)
n20/D 1.344

bp

81-82 °C (lit.)
81-82 °C (lit.)

mp

-48 °C (lit.)
−45 °C (lit.)

density

0.786 g/mL at 25 °C (lit.)

cation traces

Al: ≤0.5 mg/kg
Ba: ≤0.1 mg/kg
Bi: ≤0.1 mg/kg
Ca: ≤0.5 mg/kg
Cd: ≤0.05 mg/kg
Co: ≤0.02 mg/kg
Cr: ≤0.02 mg/kg
Cu: ≤0.05 mg/kg
Fe: ≤0.1 mg/kg
K: ≤0.5 mg/kg
Li: ≤0.1 mg/kg
Mg: ≤0.1 mg/kg
Mn: ≤0.02 mg/kg
Mo: ≤0.1 mg/kg
Na: ≤0.5 mg/kg
Ni: ≤0.02 mg/kg
Pb: ≤0.1 mg/kg
Sr: ≤0.1 mg/kg
Zn: ≤0.1 mg/kg

SMILES string

CC#N

format

neat

InChI

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

InChI key

WEVYAHXRMPXWCK-UHFFFAOYSA-N

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General description

Acetonitrile (MeCN) is a polar solvent.

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

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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Certificates of Analysis (COA)

Lot/Batch Number
BCBH5684V
BCBG8567V
BCBF7775V
BCBF3105V
BCBC5891V

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