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Food safety and quality
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| Flavouring |
Propyleneglycol mono-2-methylbutyrate (mixture of isomers) |
| Synonym(s) |
|
| Latest JECFA evaluation |
2010 (Session 73) |
| Status of specification |
Full |
| Information required |
|
| Chemical name |
Mixture of 2-hydroxypropyl 2-methylbutanoate and 1-hydroxypropan-2-yl 2-methylbutanoate |
| JECFA number |
1981 |
| CAS number |
923593-56-0;923593-57-1 |
| FEMA number |
4467 |
| COE number |
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| FLAVIS number |
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| Molecular weight |
160.21 |
| Chemical formula |
C8H16O3 |
| Physical form/odour |
Clear colourless liquid; Mild fruity ethereal aroma |
| Solubility |
Practically insoluble or insoluble in water |
| Solubility in ethanol |
Soluble |
| Boiling point (°C) |
238-240° |
| Assay min % |
96% |
| Acid value max |
1 |
| Refractive index |
1.422-1.432 |
| Specific gravity |
0.968-0.978 (20°) |
| Other requirements |
Mixture of isomers: 60% 2-Hydroxypropyl 2-methylbutanoate; 29% 1-Hydroxypropan-2-yl 2-methylbutanoate; SC: 7-8% Di-2-methylbutyrate propyleneglycol ester |
| ID Test |
MS |
| Spectrum |
 
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