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Online Edition: "Specifications for Flavourings"

Flavouring Isoquinoline
Synonym(s) 2-Benzazine;Benzo(c)pyridine;3,4-Benzopyridine;2-Azanaphthalene
Latest JECFA evaluation 2004 (Session 63)
Status of specification Full
Chemical name Isoquinoline
JECFA number 1303
CAS number 119-65-3
FEMA number 2978
COE number
FLAVIS number 14.001
Molecular weight 129.16
Chemical formula C9H7N
Physical form/odour Colourless liquid, hygroscopic platelets when solid; Heavy-sweet balsamic, herbaceous aroma
Solubility Slightly soluble in water
Solubility in ethanol Soluble
Boiling point (°C) 242-243°
Assay min % 97%
Acid value max 1
Refractive index 1.621-1.627
Specific gravity 1.097-1.103
Other requirements mp: 27-29°