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Online Edition: "Specifications for Flavourings"

Flavouring Butyraldehyde
Synonym(s) Butyl aldehyde
Latest JECFA evaluation 2000 (Session 55)
Status of specification Full
Chemical name Butanal
JECFA number 86
CAS number 123-72-8
FEMA number 2219
COE number 91
FLAVIS number
Molecular weight 72.11
Chemical formula C6H8O
Physical form/odour colourless, mobile liquid/pungent, nutty odour
Solubility soluble in 1 ml in 15 ml water; miscible with alcohol, ether
Solubility in ethanol
Boiling point (°C) 74.8°
Assay min % 98%
Acid value max 5
Refractive index 1.377-1.387
Specific gravity 0.797-0.802
Other requirements Dist. Range: 72° to 80°; para-Butyraldehyde: <2.5%; Water: <0.5%
ID Test IR