40789-98-8
3-Mercapto-2-butanone
CAS: 40789-98-8
Molecular Formula: C4H8OS
40789-98-8 - Names and Identifiers
| Name | 3-Mercapto-2-butanone |
| Synonyms | 3-sulfanylbutan-2-one 3-Mercapto-2-butanone 3-Mercapto-2-Butan-One (3R)-3-mercapto-2-butanone 3-Mercapto-2-butanone solution 3-Mercapto-2-Butanone(FEMA No.3298) |
| CAS | 40789-98-8 |
| EINECS | 255-082-2 |
| InChI | InChI=1/C4H8OS/c1-3(5)4(2)6/h4,6H,1-2H3 |
40789-98-8 - Physico-chemical Properties
| Molecular Formula | C4H8OS |
| Molar Mass | 104.17 |
| Density | 1.035 g/mL at 25 °C (lit.) |
| Boling Point | 48-49 °C/15 mmHg (lit.) |
| Flash Point | 117°F |
| JECFA Number | 558 |
| Vapor Presure | 6.25mmHg at 25°C |
| Appearance | clear liquid |
| Specific Gravity | 1.015 |
| Color | Colorless to Light yellow |
| pKa | 8.38±0.10(Predicted) |
| Storage Condition | Refrigerator |
| Sensitive | Light Sensitive |
| Refractive Index | n20/D 1.4352 |
| Physical and Chemical Properties | Colorless or light yellow liquid, exhibiting the aroma of onion and onion. Short-term storage is cloudy, and water droplets can be formed within 5h at room temperature. Melting point 50 C (2400Pa). Slightly soluble in water, soluble in ethanol, ether, pyridine and alkali. |
| Use | Used as food flavor |
40789-98-8 - Risk and Safety
| Hazard Symbols | Xi - Irritant |
| Risk Codes | R10 - Flammable R36/37/38 - Irritating to eyes, respiratory system and skin. |
| Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36 - Wear suitable protective clothing. |
| UN IDs | UN 1993 3/PG 2 |
| WGK Germany | 3 |
| RTECS | EL9050000 |
| TSCA | Yes |
| HS Code | 29309090 |
| Hazard Class | 3 |
| Packing Group | III |
40789-98-8 - Upstream Downstream Industry
| Raw Materials | sodium hydrosulfide |
40789-98-8 - Reference Information
| FEMA | 3298 | 3-MERCAPTO-2-BUTANONE |
| NIST chemical information | Information provided by: webbook.nist.gov (external link) |
| EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
| toxicity | GRAS(FEMA). |
| use limit | FEMA: soft drinks, candy, baked goods, meat products, meat soup, milk, dairy products, cereal products, all 0.2 mg/kg. |
| use | GB 2760-1996 specified as allowed food spices. Used as food essence |
| Production method | It is formed by reacting oxygen compounds with sulfur or polysulfide and ammonia at room temperature. |
Last Update：2024-04-10 22:29:15
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