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34921

Sigma-Aldrich

Acetonitrile

≥99.9% (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:
12190000

vapor density

1.41 (vs air)

vapor pressure

72.8 mmHg ( 20 °C)

Assay

≥99.9% (GC)

autoignition temp.

973 °F

expl. lim.

16 %

technique(s)

UV/Vis spectroscopy: suitable

impurities

≤0.0005% non-volatile matter
≤0.001% free acid (as CH3COOH)
≤0.01% water (Karl Fischer)
≤1 ppb fluorescence (quinine) at 254 nm
≤1 ppb fluorescence (quinine) at 365 nm

transmittance

200 nm, ≥80%
210 nm, ≥90%
230 nm, ≥98%

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.)

suitability

passes test for IR spectroscopy

SMILES string

CC#N

InChI

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

InChI key

WEVYAHXRMPXWCK-UHFFFAOYSA-N

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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

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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Certificates of Analysis (COA)

Lot/Batch Number
8023M
7288A
7180A
6130A
6117A

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