Sigma-Aldrich

Acetic Anhydride ACS Reagent, 98%+, 100 grams, case/4

Part Number:
MIL-242845-4X100G
Lead Time:
2-4 weeks
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Quantity:
4
Size:
100 grams
Style:
chemical
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Price: $208.50

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Description

Acetic Anhydride ACS Reagent ≥98.0% 100 Gram Case/4

  • 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)
4 mmHg (20°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
phosphate (PO43-): ≤0.001%
sulfate (SO42-): ≤5 ppm
cation traces

Fe: ≤5 ppm
heavy metals: ≤2 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 

GHS02GHS05GHS06GHS02,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 

Safety Data Sheet

Warnings

Note: These chemicals are for research & laboratory use only. Your order will not be processed if you do not work for, and ship to, a registered laboratory or research facility. Not for topical applications. An official Declaration of Use form may be required.

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WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer and reproductive harm. Prop 65 Warning

Please note: This product is not returnable.

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MPN:
242845-4X100G