8.22002
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:
Molecular Weight:
154.16
MDL number:
UNSPSC Code:
12352106
EC Index Number:
210-807-1
NACRES:
NA.22
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
SMILES string
O(C(=O)\C=C\C)C(=O)\C=C\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
General description
Crotonic anhydride is also known as 2-butenoic anhydride is commonly used as a precursor in the synthesis of polymers. Its reactive anhydride group makes it an effective acylating agent in esterification reactions, facilitating the formation of esters by reacting with alcohols.
Analysis Note
Assay isomers (GC, area%): ≥ 95.5 % (a/a)
Density (d 20 °C/ 4 °C): 1.038 - 1.040
Identity (IR): passes test
Density (d 20 °C/ 4 °C): 1.038 - 1.040
Identity (IR): passes test
signalword
Danger
hcodes
Hazard Classifications
Aquatic Acute 1 - Eye Dam. 1 - Skin Corr. 1B
Storage Class
8A - Combustible, corrosive hazardous materials
wgk
WGK 3
flash_point_f
235.4 °F
flash_point_c
113 °C
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Global Trade Item Number
| SKU | GTIN |
|---|---|
| 8220020100 | 04022536481746 |