But-2-enoicanhydride , 98%+(stabilizedwithTBC)(contains3-10%Cis-anhydride) , 623-68-7

Synonym(s):
trans -Crotonic anhydride;2-Butenoic anhydride;Crotonic anhydride

CAS NO.：623-68-7

Empirical Formula: C8H10O3

Molecular Weight: 154.17

MDL number: MFCD00009286

EINECS: 210-807-1

PRODUCT 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
• InChI: 1S/C8H10O3/c1-3-5-7(9)11-8(10)6-4-2/h3-6H,1-2H3/b5-3+,6-4+
• InChIKey: VJDDQSBNUHLBTD-GGWOSOGESA-N
• SMILES: O(C(=O)\C=C\C)C(=O)\C=C\C
• CAS DataBase Reference: 623-68-7(CAS DataBase Reference)
• EPA Substance Registry System: 2-Butenoic acid, anhydride (623-68-7)

Description and Uses

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.

Safety

• Symbol(GHS): GHS05,GHS09
• Signal word: Danger
• 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
• TSCA: TSCA listed
• HS Code: 2916 19 95
• HazardClass: 8
• PackingGroup: III
• Storage Class: 8A - Combustible, corrosive hazardous materials
• Hazard Classifications: Aquatic Acute 1; Eye Dam. 1; Skin Corr. 1B
• Hazardous Substances Data: 623-68-7(Hazardous Substances Data)
• Toxicity: LD50 orally in Rabbit: 2061 mg/kg