1,4-CYCHEXANEDIONE
1,4-Cyclohexanedione
CAS: 637-88-7
Molecular Formula: C6H8O2
1,4-CYCHEXANEDIONE - Names and Identifiers
| Name | 1,4-Cyclohexanedione |
| Synonyms | Tetrahydroquinone 1,4-Cyclohexandion 1,4-CYCHEXANEDIONE 1,4-CYCLOHEXANDIONE Cyclohexan-1,4-dione 1,4-Dioxocyclohexane 1,4-Cyclohexanedione 1,4-Cyclohexane Dione cyclohexane-1,4-dione tetrahydro-p-benzoquinone TETRAHYDRO-P-BENZOQUINONE |
| CAS | 637-88-7 |
| EINECS | 211-306-0 |
| InChI | InChI=1/C6H8O2/c7-5-1-2-6(8)4-3-5/h1-4H2 |
1,4-CYCHEXANEDIONE - Physico-chemical Properties
| Molecular Formula | C6H8O2 |
| Molar Mass | 112.13 |
| Density | 1.0861 |
| Melting Point | 77-78.5 °C (lit.) |
| Boling Point | 112 °C (19.5026 mmHg) |
| Flash Point | 132 °C |
| Solubility | Soluble in methanol and ethanol. |
| Vapor Presure | 0.0809mmHg at 25°C |
| Appearance | Crystallization |
| Color | Light yellow to yellow or beige |
| BRN | 774152 |
| Storage Condition | Keep in dark place,Sealed in dry,Room Temperature |
| Stability | Stable. Combustible. Incompatible with strong oxidizing agents. |
| Refractive Index | 1.4570 (estimate) |
| MDL | MFCD00001606 |
| Physical and Chemical Properties | Melting point 76-80°C boiling point 112°C (19.5026 mmHg) flash point 132°C |
| Use | For pharmaceutical, synthetic electrical conductor materials |
1,4-CYCHEXANEDIONE - Risk and Safety
| Hazard Symbols | Xi - Irritant |
| Safety Description | S22 - Do not breathe dust. S24/25 - Avoid contact with skin and eyes. |
| WGK Germany | 3 |
| FLUKA BRAND F CODES | 8 |
| TSCA | Yes |
| HS Code | 29142900 |
| Hazard Note | Irritant |
1,4-CYCHEXANEDIONE - Nature
Open Data Verified Data
colorless crystals. Soluble in chloroform, ethanol, insoluble in petroleum ether, ether.
Last Update：2024-01-02 23:10:35
1,4-CYCHEXANEDIONE - Preparation Method
Open Data Verified Data
add the prepared sodium ethoxide to the reaction kettle, add diethyl ether and diethyl succinate, dissolve in water and reflux for 3 days, recover the diethyl ether; Then cool to room temperature, add 10% dilute sulfuric acid to adjust to pH = 2, the crystals were filtered off, washed with water, and dried to give crude diethyl succinate; The crude product was recrystallized from ethanol (melting point 127-129 ° C.) to give a pure product. Then add diethyl succinate back to the flask, add the mixture of concentrated sulfuric acid, water and ethanol, refluxed in oil for 5 days, cool, neutralize with ammonia water to pH = 8, and then extract 4 times with chloroform, the crude product is obtained by recovering chloroform; The crude product is then subjected to vacuum distillation, and the distillate is poured into cold petroleum ether, filtered and dried, I .e., 1,4-cyclohexanedione product.
Last Update：2022-01-01 10:38:46
1,4-CYCHEXANEDIONE - Introduction
Soluble in water, soluble in methanol and ethanol.
Last Update：2022-10-16 17:27:36
1,4-CYCHEXANEDIONE - Use
Open Data Verified Data
This product is used in organic synthesis and is also a general reagent.
Last Update：2022-01-01 10:38:46
1,4-CYCHEXANEDIONE - Reference Information
| NIST chemical information | information provided by: webbook.nist.gov (external link) |
| EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
| Use | used in pharmaceutical, synthetic electrical conductor materials, This product is used in organic synthesis, medicine, synthesis of electrical conductor materials, etc. It is also a universal reagent. Medicine, liquid crystal intermediate, used in the synthesis of conductivity. |
| production method | Add prepared sodium ethoxide into the reaction kettle, then add diethyl ether and diethyl succinate, dissolve in water and reflux for 3 days, recovering diethyl ether; Then cooling to room temperature, adding 10% dilute sulfuric acid to adjust to pH = 2, filtering out the crystals, washing with water, and drying to obtain crude diethyl succinate; the crude product was recrystallized from ethanol (melting point 127-129 °c) to obtain a pure product. Then add diethyl succinate back to the flask, add the mixture of concentrated sulfuric acid, water and ethanol, refluxed in oil for 5 days, cool, neutralize with ammonia water to pH = 8, and then extract 4 times with chloroform, the chloroform was recovered to obtain a crude product; The crude product was then subjected to distillation under reduced pressure, and the distillate was poured into cold petroleum ether, filtered, and air-dried, I .e., 1, 4-cyclohexanedione product. |
Last Update：2024-04-09 20:49:11
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