8.22002

Crotonic anhydride

(mixture of cis and trans isomers) for synthesis

• 동의어(들): Crotonic anhydride, 2-Butenoic anhydride
• Linear Formula: (CH₃CH=CHCO)₂O
• CAS Number: 623-68-7
• Molecular Weight: 154.16
• MDL number: MFCD00009286
• UNSPSC 코드: 12352106
• EC 인덱스 번호: 210-807-1
• NACRES: NA.22

속성

• vapor pressure: 1 hPa ( 25 °C)
• Quality Level: 200
• 양식: liquid
• autoignition temp.: 290 °C
• 효능: 2061 mg/kg LD₅₀, oral (Rat)
• bp: 250 °C
• mp: -20 °C
• 전이 온도: flash point 113 °C
• density: 1.04 g/cm³ at 20 °C
• 저장 온도: 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

설명

일반 설명

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.

분석 메모

Assay isomers (GC, area%): ≥ 95.5 % (a/a)
Density (d 20 °C/ 4 °C): 1.038 - 1.040
Identity (IR): passes test

안전성 정보

• 픽토그램: GHS05,GHS09
• 신호어: Danger
• 유해 및 위험 성명서: H314 - H400
• 예방조치 성명서: P273 - P280 - P303 + P361 + P353 - P304 + P340 + P310 - P305 + P351 + P338 - P363
• Hazard Classifications: Aquatic Acute 1 - Eye Dam. 1 - Skin Corr. 1B
• Storage Class Code: 8A - Combustible, corrosive hazardous materials
• WGK: WGK 3
• Flash Point (°F): 235.4 °F
• Flash Point (°C): 113 °C