Merck Chemicals

more less

822278  Acetic anhydride
for synthesis

For general questions please contact our Customer Service:

Merck KGaA
Frankfurter Str. 250
64293 Darmstadt
Phone: +49 6151 72-0
Fax: +49 6151 72 2000

Contact us

20 April 2014

Product number Packaging Qty/Pk Quantity Price
8222781000  Plastic bottle   1 l  loading
8222782500  Plastic bottle   2.5 l  loading
8222789025  Plastic container   25 l  loading
Prices are subject to change without notice.
Product information
Synonyms Acetyl acetate, Acetyl oxide
Hill Formula C4H6O3
Chemical formula (CH3CO)2O
HS Code 2915 24 00
EC number 203-564-8
Molar mass 102.08 g/mol
EC index number 607-008-00-9
CAS number 108-24-7
Chemical and physical data
Ignition temperature 330 °C
Solubility (20 °C) Hydrolysis,Risk of violent reaction.
Melting point -73 °C
Molar mass 102.08 g/mol
Density 1.08 g/cm3 (20 °C)
pH value 3 (10 g/l, H2O, 20 °C)
Boiling point 138 - 140.5 °C (1013 hPa)
Vapor pressure 4 hPa (20 °C)
Explosion limit 2.0 - 10.2 %(V)
Flash point 49 °C
Safety information according to GHS
Hazard Statement(s) H226: Flammable liquid and vapour.
H302 + H332: Harmful if swallowed or if inhaled
H314: Causes severe skin burns and eye damage.
Precautionary Statement(s) P210: Keep away from heat.
P280: Wear protective gloves/ protective clothing/ eye protection/ face protection.
P301 + P330 + P331: IF SWALLOWED: Rinse mouth. Do NOT induce vomiting.
P305 + P351 + P338: IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
P308 + P310: IF exposed or concerned: immediately call a POISON CENTER or doctor/ physician.
Signal Word Danger
Hazard Pictogram(s)
Storage class 3 Flammable liquids
WGK WGK 1 slightly water endangering
Disposal 11
Organic acid halides, anhydrides and isocyanates can be added dropwise to an excess of methanol (Cat. No. 822283) to convert them into the corresponding methyl esters or methyl carbamates. If necessary, neutralize with sodium hydroxide solution (Cat. No. 105587). Fill into container A.
Safety information
R Phrase R 10-20/22-34
Flammable.Harmful by inhalation and if swallowed.Causes burns.
S Phrase S 26-36/37/39-45
In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.Wear suitable protective clothing, gloves and eye/face protection.In case of accident or if you feel unwell, seek medical advice immediately (show the label where possible).
Categories of danger flammable, harmful, corrosive
Hazard Symbol
Transport information
Declaration (railroad and road) ADR, RID UN 1715 Essigsäureanhydrid, 8 (3), II
Declaration (transport by sea) IMDG-Code UN 1715 ACETIC ANHYDRIDE, 8 (3), II, Segregation Group: 1 (Acids)
Declaration (transport by air) IATA-DGR UN 1715 ACETIC ANHYDRIDE, 8 (3), II
Toxicological data
LD 50 oral LD50 rat 1780 mg/kg
LD 50 dermal LD50 rabbit 4320 mg/kg
Acetic anhydride, molecular structure

© Merck KGaA, Darmstadt, Germany, 2014


Welcome to Merck Millipore


Europe, Middle East and Africa Asia / Pacific North America, Central America and the Caribbean South America

Please choose your country:

North America, Central America and the Caribbean

South America

Europe, Middle East and Africa

Asia / Pacific

All countries from A to Z

If you can't find your country please click here.


Privacy Statement



Merck Chemicals Cart ()

You are entering the Millipore online shop. Both carts are maintained for you while you shop between sites. We recommend to complete your Merck order before visiting

Go to Millipore Proceed to checkout

What kind of products are you looking for?


Bio manufacturing and Life science.

Merck Chemicals

High-quality industrial and laboratory chemicals.

Important message

It is currently not possible to order Bioscience products together with other Merck products. We recommend completing your current order first.

Do you wish to proceed without completing your current order? If so, this will empty your shopping cart.