Sigma-Aldrich
Acetic Anhydride ACS Reagent, 98%+ 3 kg
- Part Number:
- MIL-242845-3KG
- Lead Time:
- 7-14 days
- Minimum Purchase:
- 1 unit
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- FREE SHIPPING on most orders over $50*
- Quantity:
- each
- Size:
- 3 kg
- Style:
- chemical
- DOT Rated:
- HazMat Transport Fee Required
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Description
Acetic Anhydride ACS Reagent ≥98.0% 3 Kg
- CAS Number 108-24-7
- Linear Formula (CH3CO)2O
- Molecular Weight 102.09
- Beilstein/REAXYS Number 385737
- EC Number 203-564-8
- MDL number MFCD00008705
- PubChem Substance ID 24854587
- NACRES NA.21
| grade | ACS reagent |
| Vapor Density | 3.5 (vs air) |
| Vapor Pressure | 10 mmHg (36°C) |
| InChI Key | WFDIJRYMOXRFFG-UHFFFAOYSA-N |
| Assay | ≥98.0% |
| Autoignition Temperature | 629°F |
| Expl. Lim. | 10.3 % |
| Impurities | MnO4- reducers, passes test |
| evapn. residue | ≤0.003% |
| Refractive Index | n20/D 1.390 (lit.) |
| bp | 138-140°C (lit.) |
| mp | −73°C (lit.) |
| solubility | H2O: slightly soluble |
| Density | 1.08 g/mL (lit.) |
| anion traces | chloride (Cl-): ≤5 ppm |
| cation traces | Fe: ≤5 ppm |
General description
Acetic anhydride is an organic solvent. On dissolution in water it undergoes solvolysis to afford acetic acid. It is widely employed 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.
Application
Acetic anhydride has been used as one of the reaction components in the preparation of:
- 2-acetylamino-5-aminobenzenesulfonic acid
- 3,3′-bis(sulfonato)-4,4′-bis(chloroacetamido)azobenzene (BSBCA
- 10-acetoxy-9-nitro-octadecanoic acid, allyl ester
- 9-nitro-oleic acid
It may be used for acetylation of anisole over HBEA zeolite in a batch reactor.
Safety Information
GHS02,GHS05,GHS06
Signal word Danger
Hazard statements H226-H302-H314-H330
Precautionary statements P210-P260-P280-P304 + P340 + P310-P305 + P351 + P338-P370 + P378
Personal Protective Equipment Faceshields, full-face respirator (US), Gloves, Goggles, multi-purpose combination respirator cartridge (US), type ABEK (EN14387) respirator filter
RIDADR UN 1715 3(8) / PGII
WGK Germany 1
RTECS AK1925000
Flash Point(F) 120.2°F
Flash Point(C) 49°C
Documents
Warnings
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