33214-M

Essigsäureanhydrid

puriss. p.a., ACS reagent, reag. ISO, reag. Ph. Eur., ≥99% (GC)

• Synonym(e): Acetanhydride, Acetic acid anhydride, Acetyl acetate, Acetyl anhydride, Ethanoic anhydride
• Lineare Formel: (CH₃CO)₂O
• CAS-Nummer: 108-24-7
• Molekulargewicht: 102.09
• Beilstein: 385737
• EG-Nummer: 203-564-8
• MDL-Nummer: MFCD00008705
• UNSPSC-Code: 12352100
• PubChem Substanz-ID: 329754473
• NACRES: NA.21

Eigenschaften

• Qualität: ACS reagent; puriss. p.a.
• Qualitätsniveau: 100
• Agentur: USP/NF; reag. ISO; reag. Ph. Eur.
• Dampfdichte: 3.5 (vs air)
• Dampfdruck: 10 mmHg ( 36 °C); 4 mmHg ( 20 °C)
• Assay: ≥99% (GC)
• Selbstzündungstemp.: 629 °F
• Expl.-Gr.: 10.3 %
• Verunreinigungen: ≤0.003% non-volatile matter; ≤0.01% KMnO₄ red. matter (as O)
• Brechungsindex: n20/D 1.390 (lit.)
• bp: 138-140 °C (lit.)
• mp (Schmelzpunkt): −73 °C (lit.)
• Dichte: 1.08 g/mL (lit.)
• Anionenspuren: chloride (Cl^-): ≤2 mg/kg; phosphate (PO₄^3-): ≤10 mg/kg; sulfate (SO₄^2-): ≤5 mg/kg
• Kationenspuren: Al: ≤0.5 mg/kg; B: ≤0.02 mg/kg; Ba: ≤0.1 mg/kg; Ca: ≤0.5 mg/kg; Cd: ≤0.05 mg/kg; Co: ≤0.02 mg/kg; Cr: ≤0.05 mg/kg; Cu: ≤0.02 mg/kg; Fe: ≤0.1 mg/kg; Mg: ≤0.1 mg/kg; Mn: ≤0.02 mg/kg; Ni: ≤0.02 mg/kg; Pb: ≤0.1 mg/kg; Sn: ≤0.1 mg/kg; Zn: ≤0.2 mg/kg
• Eignung: passes test for reaction against H₂SO₄
• SMILES String: CC(=O)OC(C)=O
• InChI: 1S/C4H6O3/c1-3(5)7-4(2)6/h1-2H3
• InChIKey: WFDIJRYMOXRFFG-UHFFFAOYSA-N

Beschreibung

Allgemeine Beschreibung

Acetic anhydride is a colorless liquid. On dissolution in water, it undergoes solvolysis to afford acetic acid. It is widely employed as acetylation reagent for the acetylation of various alcohols. Wacher process (starting reagent + a ketene) and Knapsack process (starting reagent = acetaldehyde) have been reported for the industrial preparation of acetic anhydride. It is employed as solvent for various organic reactions.

Anwendung

• Insights into the Mechanism of Catalytic Activity of Plasmodium Parasite Malate-Quinone Oxidoreductase.: This study delves into the catalytic mechanisms of malate-quinone oxidoreductase, a target for antimalarial drugs, detailing the role of acetic anhydride in probing the enzyme′s structure and function (Ito et al., 2024).
• Adsorption simulation of 2,4-D pesticide on novel zinc-based 2-amino-4-(1H-1,2,4-triazole-4-yl)benzoic acid coordination complexes using machine learning approach.: Research exploring zinc-based coordination complexes for pesticide adsorption, where acetic anhydride plays a crucial role in the synthesis process, improving adsorption characteristics (Mansab and Rafique, 2024).
• Lysine acetylation of Hsp16.3: Effect on its structure, chaperone function and influence towards the growth of Mycobacterium tuberculosis.: Investigates the impact of lysine acetylation, facilitated by acetic anhydride, on the tuberculosis pathogen, providing insights into bacterial pathogenesis and potential therapeutic targets (Barik et al., 2024).

Sicherheitshinweise

• Piktogramme: GHS02,GHS06,GHS05
• Signalwort: Danger
• H-Sätze: H226,H302,H314,H330
• P-Sätze: P210 - P280 - P301 + P312 - P303 + P361 + P353 - P304 + P340 + P310 - P305 + P351 + P338
• Gefahreneinstufungen: Acute Tox. 2 Inhalation - Acute Tox. 4 Oral - Eye Dam. 1 - Flam. Liq. 3 - Skin Corr. 1B
• Lagerklassenschlüssel: 3 - Flammable liquids
• WGK: WGK 1
• Flammpunkt (°F): 120.2 °F - closed cup
• Flammpunkt (°C): 49 °C - closed cup