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Food safety and quality
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| Flavouring |
Pyruvaldehyde |
| Synonym(s) |
2-Ketopropionaldehyde;Acetylformaldehyde;Methylglyoxal |
| Latest JECFA evaluation |
2003 (Session 61) |
| Status of specification |
Full |
| Information required |
|
| Chemical name |
2-Oxopropanal |
| JECFA number |
937 |
| CAS number |
78-98-8 |
| FEMA number |
2969 |
| COE number |
105 |
| FLAVIS number |
07.001 |
| Molecular weight |
72.06 |
| Chemical formula |
C3H4O2 |
| Physical form/odour |
yellow mobile hygroscopic liquid which polymerizes readily; pungent stinging odour |
| Solubility |
miscible with water and most solvents and oils (yellow solutions) |
| Solubility in ethanol |
miscible |
| Boiling point (°C) |
72° |
| Assay min % |
95% |
| Acid value max |
10 |
| Refractive index |
1.399-1.406 |
| Specific gravity |
1.041-1.048 |
| Other requirements |
[Polymer dissolves in water with evolution of heat, reverting to monomer; only available as 40% aqueous solution] |
| ID Test |
CNMR |
| Spectrum |
 
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