| Name | 2,6-HEPTANEDIONE |
| Synonyms | Heptanedione 2,6-Heptadione 2,6-HEPTANEDIONE heptane-2,6-dione |
| CAS | 13505-34-5 |
| EINECS | 236-832-8 |
| Molecular Formula | C7H12O2 |
| Molar Mass | 128.169 |
| Density | 0.9399 |
| Melting Point | 33.5°C |
| Boling Point | 167.6°C (rough estimate) |
| Storage Condition | 2-8℃ |
| Refractive Index | 1.4277 |
| Physical and Chemical Properties | Chemical properties White crystals. Melting point 33-34 ℃, boiling point 221-224 ℃,96.5-97 ℃(1.33kPa), relative density 0.9399(37/4 ℃), refractive index 1.4277(37 ℃). Soluble in benzene, ether, ethanol, water. |
| Use | Uses for organic synthesis. The pharmaceutical industry is used for the synthesis of norethisterone 18-methyl. |
made from diketene. Mix diketene with water, add 37% formaldehyde solution dropwise under cooling, and react at 10 ℃ for 2-3h. Then slowly heat to 40 ℃, the reaction releases carbon dioxide, heat preservation reaction for 10-12h, and then extract with benzene. After benzene is recovered from the extract, it is distilled under reduced pressure to collect the 90-101 ℃(1.02-1.47kPa) fraction, and then cooled, crystallized, washed and dried to obtain heptadione.