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00990

Sigma-Aldrich

Acetyl chloride

puriss. p.a., ≥99.0% (T)

Synonym(s):

Acetic acid chloride, Acetic chloride, Ethanoyl chloride

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About This Item

Linear Formula:
CH3COCl
CAS Number:
75-36-5
Molecular Weight:
78.50
Beilstein:
605303
EC Number:
200-865-6
MDL number:
MFCD00000719
UNSPSC Code:
12352100
eCl@ss:
39050501
PubChem Substance ID:
329747174
NACRES:
NA.21

vapor density

2.7 (vs air)

Quality Level

200

vapor pressure

11.69 psi ( 20 °C)
32.33 psi ( 55 °C)

grade

puriss. p.a.

Assay

≥99.0% (T)

form

liquid

autoignition temp.

1353 °F

expl. lim.

19 %

refractive index

n20/D 1.389 (lit.)
n20/D 1.389

bp

52 °C (lit.)

mp

−112 °C (lit.)

density

1.104 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: ≤0.1 mg/kg
Cu: ≤0.02 mg/kg
Fe: ≤0.5 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(Cl)=O

InChI

1S/C2H3ClO/c1-2(3)4/h1H3

InChI key

WETWJCDKMRHUPV-UHFFFAOYSA-N

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General description

Acetyl chloride (acyl chloride) is an acetylation reagent used in esterification and Friedel-Crafts acylation reactions.

Application

Acetyl chloride can be used as:
  • A degradation agent in the degradation of polyoxyethylene glycol monoalkyl ethers to determine the degree of ethoxylation using chromatography-mass spectrometry (MS).
  • A reagent with alcohols for the esterification of carboxylic acids, N-boc deprotection, and phosphoramide solvolysis reactions.

Pictograms

FlameCorrosion
GHS02,GHS05

Signal Word

Danger

Hazard Statements

H225,H314

Hazard Classifications

Eye Dam. 1 - Flam. Liq. 2 - Skin Corr. 1B

Supplementary Hazards

EUH014

Storage Class Code

3 - Flammable liquids

WGK

WGK 1

Flash Point(F)

41.0 °F - closed cup

Flash Point(C)

5 °C - closed cup

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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Certificates of Analysis (COA)

Lot/Batch Number
BCCM0051
BCCL0784
BCCH6904
BCCJ6973
BCCG5173

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A rapid and simple method for the esterification of fatty acids and steroid carboxylic acids prior to gas-liquid chromatography
Lillington JM, et al.
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Comparisons of O-acylation and Friedel-Crafts acylation of phenols and acyl chlorides and Fries rearrangement of phenyl esters in trifluoromethanesulfonic acid: Effective synthesis of optically active homotyrosines
Murashige R, et al.
Tetrahedron, 67(3), 641-649 (2011)
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A microfluidic high-resolution NMR flow probe based on a novel stripline detector chip is demonstrated. This tool is invaluable for the in situ monitoring of reactions performed in microreactors. As an example, the acetylation of benzyl alcohol with acetyl chloride
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