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| ACETOIN | ||
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PRODUCT IDENTIFICATION |
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| CAS NO | 513-86-0 |
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| EINECS NO. | 208-174-1 | |
| FORMULA | CH3COCH(OH)CH3 | |
| MOL WT. | 88.11 | |
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H.S. CODE |
2914.40 | |
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TOXICITY |
Oral rat LD50: > 5000 mg/kg | |
| SYNONYMS |
Acetyl Methyl Carbinol; 3-Hydroxy-2-butanone; |
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| 2-Butanol-3-one; 3-Hydroxybutan-2-one; Dimethylketol; ¥ã-Hydroxy-¥â-oxobutane; Acetylmethyl-Methanol; 1-Hydroxyethyl methyl ketone; 2-Hydroxy-3-butanone; 2,3-Butanolone; 3-Hydroxy-2-butanone; 2-Butanol-3-one; | ||
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CLASSIFICATION |
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PHYSICAL AND CHEMICAL PROPERTIES |
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| PHYSICAL STATE |
slightly yellow liquid (dimer; crystals) | |
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MELTING POINT |
15 C | |
| BOILING POINT | 148 C | |
| SPECIFIC GRAVITY | 1.01 - 1.02 | |
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SOLUBILITY IN WATER |
soluble (miscible with alcohol, PG; Insoluble in fatty oils) | |
| pH | ||
| VAPOR DENSITY | 3.04 | |
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AUTOIGNITION |
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NFPA RATINGS |
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| REFRACTIVE INDEX |
1.4170 - 1.4210 | |
| FLASH POINT |
55 C | |
| STABILITY | Stable under ordinary conditions | |
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APPLICATIONS |
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| Acetoin, 3-hydroxy-2-butanone, containing a ketone as well as a hydroxy group in one short chain molecular (C4 chain). It is an intermediate of the butanediol cycle in microorganisms. It is formed in the fermentation of glucose by certain bacteria (Enterobacteriaceae). In mammals it is oxidized to carbon dioxide. Commercially it is prepared from diacetyl by partial reduction with zinc and acid. It is a pale yellow to green yellow liquid with a butter like odour; melting point 15 C; soluble in water; miscible with alcohols; insoluble in fatty oils. It is used as a flavoring and a fragrance. It is used as an aroma carrier in the preparation of flavors and essences. | ||
| SALES SPECIFICATION | ||
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APPEARANCE |
pale yellow to green yellow liquid or crystals | |
REFRACTIVE INDEX |
1.4170 - 1.4210 | |
| ASSAY (G.C) |
96.0% min | |
| TRANSPORTATION | ||
| PACKING | ||
| HAZARD CLASS | 3 (Packing group: III) | |
| UN NO. | 2621 | |
| OTHER INFORMATION | ||
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Shelf life: 6 months |
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