CAS No.:	79-09-4
Formula:	C7h4cl2o
EINECS:	204-515-3
Type:	Synthesis Material Intermediates
Appearance:	Liquid
Quality:	Industrial

Propionic acid Basic information
Product Name:	Propionic acid
CAS:	79-09-4
MF:	C3H6O2
MW:	74.08
EINECS:	201-176-3
Mol File:	79-09-4.mol
Propionic acid Chemical Properties
Melting point	−24-−23 °C(lit.)
Boiling point	141 °C(lit.)
density	0.993 g/mL at 25 °C(lit.)
vapor density	2.55 (vs air)
vapor pressure	2.4 mm Hg ( 20 °C)
refractive index	n20/D 1.386(lit.)
FEMA	2924 \| PROPIONIC ACID
Fp	125 °F
storage temp.	0-6°C
solubility	organic solvents: soluble(lit.)
pka	4.86(at 25ºC)
form	Liquid
color	≤10, APHA:
Specific Gravity	0.996 (20/4ºC)
PH	2.5 (100g/l, H2O, 20ºC)
Odor Threshold	0.0057ppm
explosive limit	2.1-12%(V)
Water Solubility	37 g/100 mL
Merck	14,7825
JECFA Number	84
BRN	506071
Exposure limits	TLV-TWA 10 ppm (~30 mg/m3) (ACGIH).
Stability:	Stable. Incompatible with strong oxidizing agents. Flammable.
InChIKey	XBDQKXXYIPTUBI-UHFFFAOYSA-N
CAS DataBase Reference	79-09-4(CAS DataBase Reference)
NIST Chemistry Reference	Propanoic acid(79-09-4)
EPA Substance Registry System	Propionic acid (79-09-4)

Items tested	Specifications	Results
Appearance	Colorless transparent liquid with pungent acidity	Qualified
Aroma	Light Huang chunju plant or tobacco aroma	pass
Assay %	≥99.0%	99.86%
Acid value (mg.KOH/G)	≥1	320-329
Natural degree (C14)	/	/
Heavy metals (Pb)	≤0.001%	0.0001%
Moisture %	≤0.5%	0.0656%
As	≤0.0003%	0.00001%
Boiling point	138.5-142.5°C	140.7°C
Relative density (d25 ) 25	0.993-0.997(25/25°C)	0.995(25/25°C)
Refractive index (nD²⁰)	1.383-1.385	1.3841
Solubility	Soluble in water(1ml/42ml), soluble in , ethyl ether and propylene glycol	Qualified
Conclusion	Conform to FCC-4, USP-28, BP-2003

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