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Online Edition: "Specifications for Flavourings"

Flavouring Butyric acid
Latest JECFA evaluation 1997 (Session 49)
Status of specification Full
Chemical name Butanoic acid
JECFA number 87
CAS number 107-92-6
FEMA number 2221
COE number 5
FLAVIS number
Molecular weight 88.11
Chemical formula C4H8O2
Physical form/odour colourless liquid/strong, rancid, butterlike odour
Solubility miscible with alcohol, most fixed oils, propylene glycol, water
Solubility in ethanol
Boiling point (°C) 164°
Assay min % 99.0%
Acid value max
Refractive index 1.397-1.399
Specific gravity 0.952-0.956
Other requirements Heavy Metals: <0.004%; Lead: <10 mg/kg; Reducing Subs.: passes test
ID Test IR