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81910 Sigma-Aldrich

Propionic acid

puriss. p.a., ≥99.5% (GC)

Synonym: Acid C3, Propanoic acid, Propanyl acid

  • CAS Number 79-09-4

  • Linear Formula CH3CH2COOH

  • Molecular Weight 74.08

  •  Beilstein Registry Number 506071

  •  EC Number 201-176-3

  •  MDL number MFCD00002756

  •  PubChem Substance ID 24887812

  •  eCl@ss 39021305

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Properties

Related Categories Acids, Acids & Bases, Analytical Reagents, Analytical Reagents for General Use, Analytical/Chromatography,
vapor density   2.55 (vs air)
vapor pressure   2.4 mmHg ( 20 °C)
InChI Key   XBDQKXXYIPTUBI-UHFFFAOYSA-N
grade   puriss. p.a.
assay   ≥99.5% (GC)
autoignition temp.   955 °F
expl. lim.   12.1 %
refractive index   n20/D 1.386(lit.)
  n20/D 1.386
bp   141 °C(lit.)
mp   −24-−23 °C(lit.)
solubility   organic solvents: soluble(lit.)
  water: soluble(lit.)
density   0.993 g/mL at 25 °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: ≤0.1 mg/kg
  Cu: ≤0.02 mg/kg
  Fe: ≤0.5 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: ≤1 mg/kg
  Ni: ≤0.1 mg/kg
  Pb: ≤0.1 mg/kg
  Sr: ≤0.1 mg/kg
  Zn: ≤0.1 mg/kg

Description

Application

Propionic acid may be used in the synthesis of cellulose propionate (cellulose ester).

General description

Propionic acid is a linear monocarboxylic acid. It affords esters on reaction with alcohols or alkenes. It can be synthesized by reacting ethane, carbon monoxide and water. It participates as a precursor in the preparation of smallest azolium homoenolate intermediate.

Price and Availability


All labs need water
Safety & Documentation

Safety Information

Symbol 
Signal word 
Danger
Hazard statements 
RIDADR 
UN3463 - class 3 - Propionic acid
WGK Germany 
1
RTECS 
UE595000
Flash Point(F) 
129.2 °F
Flash Point(C) 
54 °C
Protocols & Articles

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