Food safety and quality
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Flavouring |
4-Hydroxybutyric acid lactone |
Synonym(s) |
gamma-Butyrolactone;Butyro-1,4-lactone |
Latest JECFA evaluation |
1998 (Session 51) |
Status of specification |
Full |
Information required |
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Chemical name |
4-Butanolide;Dihydro-2(3H)-furanone |
JECFA number |
219 |
CAS number |
96-48-0 |
FEMA number |
3291 |
COE number |
615 |
FLAVIS number |
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Molecular weight |
86.09 |
Chemical formula |
C4H6O2 |
Physical form/odour |
colourless to slightly yellow liquid with a faint, sweet, caramel-like odour |
Solubility |
soluble in water; miscible with alcohol |
Solubility in ethanol |
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Boiling point (°C) |
204° |
Assay min % |
98.0% |
Acid value max |
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Refractive index |
1.434-1.454 (25°) |
Specific gravity |
1.120-1.130 |
Other requirements |
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ID Test |
IR |
Spectrum |
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