Home > Name List By 2 > 2-methylpropanoic acid

CAS No 79-31-2 , 2-methylpropanoic acid

  • Name: 2-methylpropanoic acid
  • Synonyms: Isobutanoic acid; Dimethylacetic acid; 2-Methylpropionic acid; Isobutyrate; Isopropylformic acid;2-Methylpropanoic acid;2-methylpropanoic acid;
  • CAS Registry Number:
  • Transport: UN 2529
  • Melting Point: -47 ºC
  • Flash Point: 59 ºC
  • Boiling Point: 153-154 ºC
  • Density: 0.948
  • Refractive index: 1.392-1.394
  • Water Solubility: 210 G/L (20 ºC)
  • Safety Statements: R21/22
  • Hazard Symbols: Xn: Harmful;
  • Flash Point: 59 ºC
  • EINECS: 201-195-7
  • Molecular Weight: 88.10512
  • InchiKey: KQNPFQTWMSNSAP-UHFFFAOYSA-N
  • InChI: InChI=1S/C4H8O2/c1-3(2)4(5)6/h3H,1-2H3,(H,5,6)
  • Risk Statements: R21/22
  • Molecular Formula: C4H8O2
  • Molecular Structure:CAS No:79-31-2 2-methylpropanoic acid
References of 2-methylpropanoic acid
Title: Isobutyric Acid
CAS Registry Number: 79-31-2
CAS Name: 2-Methylpropanoic acid
Synonyms: isopropylformic acid
Molecular Formula: C4H8O2
Molecular Weight: 88.11
Percent Composition: C 54.53%, H 9.15%, O 36.32%
Line Formula: (CH3)2CHCOOH
Literature References: Prepn from 1-nitroisobutane: Lippincott, Hass, Ind. Eng. Chem. 31, 118 (1939); from methallyl chloride: Towle, Hall, US 2667508 (1954 to Standard Oil Co. of Indiana); from propylene: Alderson, US 3020314 (1962 to du Pont); from 2-methylpropane + CO with HF catalyst: Friedman, Cotton, J. Org. Chem. 27, 481 (1962).
Properties: Liquid; pungent odor like that of butyric acid, but not as unpleasant. bp760 152-155°. mp -47°. d420 0.950. nD20 1.3930. Flash pt, open cup: 170°F (77°C). Sol in 6 parts of water; misc with alcohol, chloroform, ether.
Melting point: mp -47°
Boiling point: bp760 152-155°
Flash point: Flash pt, open cup: 170°F (77°C)
Index of refraction: nD20 1.3930
Density: d420 0.950
CAUTION: Mild irritant.