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8.22002

Sigma-Aldrich

Crotonic anhydride

(mixture of cis and trans isomers) for synthesis

Synonym(s):

Crotonic anhydride, 2-Butenoic anhydride

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About This Item

Linear Formula:
(CH3CH=CHCO)2O
CAS Number:
623-68-7
Molecular Weight:
154.16
UNSPSC Code:
12352106
EC Index Number:
210-807-1
NACRES:
NA.22

vapor pressure

1 hPa ( 25 °C)

Quality Level

200

form

liquid

autoignition temp.

290 °C

potency

2061 mg/kg LD50, oral (Rat)

bp

250 °C

mp

-20 °C

transition temp

flash point 113 °C

density

1.04 g/cm3 at 20 °C

storage temp.

2-30°C

InChI

1S/C8H10O3/c1-3-5-7(9)11-8(10)6-4-2/h3-6H,1-2H3/b5-3+,6-4+

InChI key

VJDDQSBNUHLBTD-GGWOSOGESA-N

Analysis Note

Assay isomers (GC, area%): ≥ 95.5 % (a/a)
Density (d 20 °C/ 4 °C): 1.038 - 1.040
Identity (IR): passes test

Pictograms

CorrosionEnvironment
GHS05,GHS09

Signal Word

Danger

Hazard Statements

H314 - H400

Hazard Classifications

Aquatic Acute 1 - Eye Dam. 1 - Skin Corr. 1B

Storage Class Code

8A - Combustible, corrosive hazardous materials

WGK

WGK 3

Flash Point(F)

235.4 °F

Flash Point(C)

113 °C

Certificates of Analysis (COA)

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