8.22002
Crotonic anhydride
(mixture of cis and trans isomers) for synthesis
别名:
Crotonic anhydride, 2-Butenoic anhydride
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关于此项目
线性分子式:
(CH3CH=CHCO)2O
化学文摘社编号:
分子量:
154.16
MDL number:
UNSPSC Code:
12352106
EC Index Number:
210-807-1
NACRES:
NA.22
vapor pressure
1 hPa ( 25 °C)
Quality Segment
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
警示词
Danger
危险代码
Hazard Classifications
Aquatic Acute 1 - Eye Dam. 1 - Skin Corr. 1B
存储类别
8A - Combustible corrosive hazardous materials
怎么回事？
WGK 3
闪点 (F)
235.4 °F
闪点 (°C)
113 °C