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8.22002

Sigma-Aldrich

Crotonic anhydride

(mixture of cis and trans isomers) for synthesis

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Synonym(s):
Crotonic anhydride, 2-Butenoic anhydride
Linear Formula:
(CH3CH=CHCO)2O
CAS Number:
Molecular Weight:
154.16
EC Index Number:
210-807-1

vapor pressure

1 hPa ( 25 °C)

Quality Level

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

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1 of 4

This Item
8.41321161330125318
vibrant-m

8.22002

Crotonic anhydride

vibrant-m

8.41321

Citraconic anhydride

vibrant-m

125318

Citraconic anhydride

bp

250 °C

bp

213-214 °C/1013 hPa

bp

-

bp

213-214 °C (lit.)

mp

-20 °C

mp

7-8 °C

mp

>300 °C (lit.)

mp

6-10 °C (lit.)

form

liquid

form

liquid

form

solid

form

liquid

density

1.04 g/cm3 at 20 °C

density

1.243 g/cm3 at 20 °C

density

-

density

1.247 g/mL at 25 °C (lit.)

vapor pressure

1 hPa ( 25 °C)

vapor pressure

1.3 hPa ( 47 °C)

vapor pressure

-

vapor pressure

-

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

signalword

Danger

Hazard Classifications

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

Storage Class

8A - Combustible, corrosive hazardous materials

wgk_germany

WGK 3

flash_point_f

235.4 °F

flash_point_c

113 °C


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