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Merck
CN

00695

Sigma-Aldrich

Acetonitrile

puriss., absolute, over molecular sieve (H2O ≤0.01%), ≥99.5% (GC)

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:
12191502
eCl@ss:
39031501
PubChem Substance ID:
24844940

Key Documents

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vapor density

1.41 (vs air)

vapor pressure

72.8 mmHg ( 20 °C)

grade

absolute
puriss.

Assay

≥99.5% (GC)

autoignition temp.

973 °F

quality

over molecular sieve (H2O ≤0.01%)

expl. lim.

16 %

refractive index

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

bp

81-82 °C (lit.)

mp

−45 °C (lit.)

density

0.786 g/mL at 25 °C (lit.)

SMILES string

CC#N

InChI

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

InChI key

WEVYAHXRMPXWCK-UHFFFAOYSA-N

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General description

Acetonitrile (MeCN) is a polar solvent.

Application

Acetonitrile (MeCN) may be used as an extraction solvent during the quantification of pesticide residues in fruits and vegetables.

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

Regulatory Information

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Certificates of Analysis (COA)

Lot/Batch Number
STBJ2838
STBJ2146
STBJ1907
STBJ1535
STBJ0311

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