Food safety and quality: details

Flavouring	2-Butanone
Synonym(s)	Ethyl methyl ketone
Latest JECFA evaluation	1998 (Session 51)
Status of specification	Full
Information required
Chemical name	Butan-2-one
JECFA number	278
CAS number	78-93-3
FEMA number	2170
COE number	753
FLAVIS number
Molecular weight	72.11
Chemical formula	C4H8O
Physical form/odour	colourless, mobile liquid with an ethereal, nauseating odour
Solubility	miscible with alcohol, ether, most fixed oils; 1 ml in 4 ml water
Solubility in ethanol
Boiling point (°C)	78.6-80°
Assay min %	99.5%
Acid value max	2
Refractive index	1.375-1.384
Specific gravity	0.801-0.803
Other requirements	Distillation range: within 1.5°; Water: =<0.2%
ID Test	IR
Spectrum