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LC3054 Isobutyric anhydride

for synthesis


Order number Packaging Quantity Price €
AC30054 Glass bottle 100 ml 11.88
AC30054 Glass bottle 500 ml 20.25


Product information
Synonyms Bis(2-methylpropionic acid) anhydride, 2-Methylpropionic anhydride
Hill Formula C8H14O3
Chemical formula [(CH3)2CHCO]2O
HS Code 2915 90 00
EC number 202-603-6
Molar mass 158.2 g/mol
CAS number 97-72-3


Chemical and physical data
Ignition temperature 375 °C
Solubility (20 °C) Hydrolysis
Melting point -69 °C
Molar mass 158.2 g/mol
Density 0.95 g/cm3 (20 °C)
Boiling point 183 – 187 °C
Vapor pressure 5 hPa (50 °C)
Explosion limit 1 – 6.2 %(V)
Flash point 66 °C


Safety information according to GHS
Hazard Statement(s) H301 + H311: Toxic if swallowed or in contact with skin.
H314: Causes severe skin burns and eye damage.
Precautionary Statement(s) P260: Do not breathe vapour.
P280: Wear protective gloves/protective clothing/eye protection/face protection.
P301 + P330 + P331: IF SWALLOWED: rinse mouth. Do NOT induce vomiting.
P302 + P352: IF ON SKIN: Wash with plenty of soap and water.
P305 + P351 + P338: IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
Signal Word Danger
Hazard Pictogram(s)
Storage class 8 A Combustible substances, corrosive
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 21/22-34
Harmful in contact with skin and if swallowed.Causes burns.
S Phrase S 23-26-36/37/39-45
Do not breathe vapour.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 harmful, corrosive
Hazard Symbol Corrosive


Transport information
Declaration (transport by sea) IMDG-Code UN 2922 CORROSIVE LIQUID, TOXIC, N.O.S.(ISOBUTYRIC ANHYDRIDE), 8 (6.1), III
Declaration (transport by air) IATA-DGR UN 2922 CORROSIVE LIQUID, TOXIC, N.O.S.(ISOBUTYRIC ANHYDRIDE), 8 (6.1), III


Toxicological data
LD 50 oral LD50 rat 266 mg/kg
LD 50 dermal LD50 rabbit 475 mg/kg


Assay (GC, area%) ≥ 97 %
Density (d 20 °C/ 4 °C) 0.950 – 0.953
Identity (IR) passes test


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