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Online Edition: "Specifications for Flavourings"

Flavouring 2-Ethylbutyric acid
Latest JECFA evaluation 1998 (Session 51)
Status of specification Full
Chemical name 2-Ethylbutyric acid
JECFA number 257
CAS number 88-09-5
FEMA number 2429
COE number 2001
FLAVIS number
Molecular weight 116.16
Chemical formula C6H12O2
Physical form/odour colourless liquid with a mildly rancid odour
Solubility miscible with alcohol, ether; soluble in water 1 ml in 65 ml
Solubility in ethanol
Boiling point (°C) 99° (18 mm Hg)
Assay min % 98.0%
Acid value max
Refractive index 1.413
Specific gravity 0.917-0.922
Other requirements Dist. Range: 190° to 200°; Water: =<0.2%
ID Test IR