8.22278

Acetic anhydride

for synthesis

• 동의어(들): Acetic anhydride, Acetyl acetate, Acetyl oxide
• Linear Formula: (CH₃CO)₂O
• CAS Number: 108-24-7
• Molecular Weight: 102.09
• MDL number: MFCD00008705
• UNSPSC 코드: 12352106
• EC 인덱스 번호: 203-564-8
• NACRES: NA.22

속성

• vapor pressure: 4 hPa ( 20 °C)
• Quality Level: 200
• 분석: ≥98.0% (GC)
• 형태: liquid
• autoignition temp.: 330 °C
• 효능: 630 mg/kg LD₅₀, oral (Rat); 4320 mg/kg LD₅₀, skin (Rabbit)
• expl. lim.: 2.0-10.2 % (v/v)
• pH: 3 (20 °C, 10 g/L in H₂O)
• mp: -73 °C
• 전이 온도: flash point 49 °C
• density: 1.08 g/cm³ at 20 °C
• 저장 온도: 2-30°C
• InChI: 1S/C4H6O3/c1-3(5)7-4(2)6/h1-2H3
• InChI key: WFDIJRYMOXRFFG-UHFFFAOYSA-N

설명

일반 설명

Acetic anhydride is a widely used reagent in organic synthesis. The reagent is effective for acetylating alcohols, amines, and thiols. Additionally, it is used in various named reactions such as the Pummerer reaction, the Perkin reaction, the Polonovski reaction, the N-oxide reaction, and the Thiele reaction. Acetic anhydride is an effective reagent during oxidation of alcohols, dehydration, ether cleavage, enol acetate formation, and gem-diacetate formation.

애플리케이션

Acetic anhydride is used:

• In the solvent free acylation of 2-methylfuran to 2-acetyl-5-methylfuran in presence of hydroxide fluorides catalyst.
• As a catalyst in the synthesis of 3-arylideneisobenzofuran-1(3H)-one derivatives from phthalic anhydride and quinoline derivatives.
• In the preparation of hyperbranched poly ethoxy siloxanes by condensation reaction with tetra ethoxy silane in presence of an organotitanium catalyst.

분석 메모

Assay (GC, area%): ≥ 98.0 % (a/a)
Density (d 20 °C/ 4 °C): 1.080 - 1.082
Identity (IR): passes test

안전성 정보

• 픽토그램: GHS02,GHS05,GHS06
• 신호어: Danger
• 유해 및 위험 성명서: H226 - H302 - H314 - H330
• 예방조치 성명서: P210 - P280 - P301 + P312 - P303 + P361 + P353 - P304 + P340 + P310 - P305 + P351 + P338
• Hazard Classifications: Acute Tox. 2 Inhalation - Acute Tox. 4 Oral - Eye Dam. 1 - Flam. Liq. 3 - Skin Corr. 1B
• Storage Class Code: 3 - Flammable liquids
• WGK: WGK 1
• Flash Point (°F): 120.2 °F - closed cup
• Flash Point (°C): 49 °C - closed cup