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Crotonic anhydride Structure

Crotonic anhydride

Chemical Properties

Melting point -20°C
Boiling point 248 °C(lit.)
Density  1.04 g/mL at 25 °C(lit.)
vapor pressure  1 hPa (25 °C)
refractive index  n20/D 1.473(lit.)
Flash point 231 °F
storage temp.  Store below +30°C.
solubility  soluble in Ether
form  clear liquid
color  Colorless to Light orange to Yellow
CAS DataBase Reference 623-68-7(CAS DataBase Reference)
EWG's Food Scores 1
FDA UNII N521PMQ949
EPA Substance Registry System 2-Butenoic acid, anhydride (623-68-7)

Safety

Symbol(GHS)
Signal wordDanger
Hazard statements H314-H400
Precautionary statements P273-P280-P303+P361+P353-P304+P340+P310-P305+P351+P338-P363
Hazard Codes  C
Risk Statements  34
Safety Statements  26-36/37/39-45
RIDADR  UN 3265 8/PG 3
WGK Germany  3
RTECS  GQ6125000
Autoignition Temperature 290 °C
HS Code  2916 19 95
HazardClass  8
PackingGroup  III
Hazardous Substances Data 623-68-7(Hazardous Substances Data)
Toxicity LD50 orally in Rabbit: 2061 mg/kg
NFPA 704:
0
3 0

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