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Isobutyric acid

SIAL/58360 - puriss. p.a., ≥99.5%

Synonym: 2-Methylpropionic acid

CAS Number: 79-31-2
Empirical Formula (Hill Notation): C4H8O2
Molecular Weight: 88.11
EC Number: 201-195-7
MDL Number: MFCD00002658
Linear Formula: (CH3)2CHCO2H
Product Type: Chemical

Catalog Number PKG Qty. Price Quantity
45-58360-100ML 100 mL
$37.60
1/EA
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assay ≥99.5%
  ≥99.5% (GC)
autoignition temp. 824 °F
bp 153-154 °C (lit.)
cation traces Al: ≤0.5 mg/kg
  Ba: ≤0.1 mg/kg
  Bi: ≤0.1 mg/kg
  Ca: ≤0.5 mg/kg
  Cd: ≤0.05 mg/kg
  Co: ≤0.02 mg/kg
  Cr: ≤0.02 mg/kg
  Cu: ≤0.02 mg/kg
  Fe: ≤0.1 mg/kg
  K: ≤0.5 mg/kg
  Li: ≤0.1 mg/kg
  Mg: ≤0.1 mg/kg
  Mn: ≤0.02 mg/kg
  Mo: ≤0.1 mg/kg
  Na: ≤2 mg/kg
  Ni: ≤0.02 mg/kg
  Pb: ≤0.1 mg/kg
  Sr: ≤0.1 mg/kg
  Zn: ≤0.1 mg/kg
density 0.95 g/mL at 25 °C (lit.)
expl. lim. 10 %
grade puriss. p.a.
impurities ≤0.2% water
InChI 1S/C4H8O2/c1-3(2)4(5)6/h3H,1-2H3,(H,5,6)
InChI key KQNPFQTWMSNSAP-UHFFFAOYSA-N
mp −47 °C (lit.)
Quality Level 200 
refractive index n20/D 1.393
  n20/D 1.393 (lit.)
SMILES string CC(C)C(O)=O
vapor density 3.04 (vs air)
vapor pressure 1.5 mmHg ( 20 °C)
Application: Isobutyric acid may be used to synthesize methacrylic acid via oxidative dehydrogenation in the presence of a suitable heteropolyacid as catalyst.
General description: Isobutyric acid can be prepared via the carbonylation of propylene.
Purity ≥99.5% (GC); ≥99.5%
bp 153-154 °C (lit.)
mp −47 °C (lit.)
Density 0.95 g/mL at 25 °C (lit.)
Refractive Index n20/D 1.393 (lit.); n20/D 1.393
UNSPSC 12352100

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