8.00472 EMD Millipore

Isobutyric acid

Isobutyric acid for synthesis. CAS 79-31-2, EC Number 201-195-7, chemical formula (CH₃)₂CHCOOH., for synthesis

Synonym: 2-Methylpropionic acid

  • CAS Number 79-31-2

  • Linear Formula C₄H₈O₂

  • Molecular Weight 88.11 g/mol

  •  EC Number 201-195-7



Related Categories Acids, Acids & Bases, Chemical Synthesis, Synthetic Reagents
packaging   100 ml in Glass bottle (8004720100)
expl. lim.     1.6 - 7.3 %(V)
vapor pressure   2 hPa (20 °C)
solubility   618 g/l
density   0.95 g/cm3 (20 °C)
flash point   56 °C
autoignition temp.   455 °C
mp   -46 °C
pH   2.3 (500 g/l, H₂O, 25 °C)
LD 50 oral   LD50 Rat 266 mg/kg
LD 50 dermal   LD50 Rabbit 475 mg/kg
shipped in   ambient
storage temp.   Store below +30°C.
specifications   Assay (GC, area%): ≥ 99.0 % (a/a)
  Density (d 20 °C/ 4 °C): 0.947 - 0.949
  Water (K. F.): ≤ 0.20 %
  Identity (IR): passes test

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Safety Information

HS Code 
2915 60 19
Hazard Statement(s) 
H302 + H312: Harmful if swallowed or in contact with skin
Precautionary Statement(s) 
P210: Keep away from heat.
P302 + P352: IF ON SKIN: Wash with plenty of soap and water.
Storage class 
3 Flammable liquids
WGK 1 slightly water endangering
Relatively unreactive organic reagents should be collected in container A. If halogenated, they should be collected in container B. For solid residues use container C.
Hazard Pictogram(s) 
GHS07  GHS07
Hazard Symbols 
Harmful  Harmful
Declaration (railroad and road) ADR, RID 
UN 2529 , 3 (8), III
Declaration (transport by air) IATA-DGR 
UN 2529 , 3 (8), III
Declaration (transport by sea) IMDG-Code 
UN 2529 , 3 (8), III
Categories of danger 
R Phrase 
R 21/22
Harmful in contact with skin and if swallowed.
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