5-nitro-2-furfural diacetyl acetal
5-Nitro-2-furaldehyde diacetate
CAS: 92-55-7
Molecular Formula: C9H9NO7
5-nitro-2-furfural diacetyl acetal - Names and Identifiers
5-nitro-2-furfural diacetyl acetal - Physico-chemical Properties
| Molecular Formula | C9H9NO7 |
| Molar Mass | 243.17 |
| Density | 1.5301 (rough estimate) |
| Melting Point | 89-93 °C |
| Boling Point | 386.04°C (rough estimate) |
| Flash Point | 141.5°C |
| Solubility | Chloroform (Slightly), Methanol (Very Slightly) |
| Vapor Presure | 0.000605mmHg at 25°C |
| Appearance | Fine Crystalline Powder |
| Color | Yellow |
| BRN | 255089 |
| Storage Condition | Keep in dark place,Sealed in dry,Room Temperature |
| Sensitive | Light Sensitive |
| Refractive Index | 1.5800 (estimate) |
| MDL | MFCD00003244 |
| Physical and Chemical Properties | White crystals. |
| Use | Used as pharmaceutical intermediates for the preparation of furazolidone anti-infective drugs furazolidone, furazolidone, furazolidone, etc |
5-nitro-2-furfural diacetyl acetal - Risk and Safety
| Hazard Symbols | Xn - Harmful |
| Risk Codes | R68 - Possible risk of irreversible effects R40 - Limited evidence of a carcinogenic effect R20/21/22 - Harmful by inhalation, in contact with skin and if swallowed. |
| Safety Description | S24/25 - Avoid contact with skin and eyes. S36 - Wear suitable protective clothing. S22 - Do not breathe dust. S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. S7 - Keep container tightly closed. |
| RTECS | LU1940000 |
| TSCA | Yes |
| HS Code | 29321900 |
5-nitro-2-furfural diacetyl acetal - Nature
Open Data Verified Data
white crystals. Melting point 92.5 °c. Insoluble in water.
Last Update：2024-01-02 23:10:35
5-nitro-2-furfural diacetyl acetal - Preparation Method
Open Data Verified Data
The intermediates of the anti-infectives of the furazolidone class (such as furazolidone, furazolidone, tamsulosin, etc.).
Last Update：2022-01-01 10:57:00
5-nitro-2-furfural diacetyl acetal - Preparation Method
Open Data Verified Data
furfural is nitrated with nitric acid and acetic anhydride using concentrated sulfuric acid as a catalyst to form an intermediate, and then partially hydrolyzed by adjusting the pH value with sodium carbonate solution.
Last Update：2022-01-01 10:57:01
5-nitro-2-furfural diacetyl acetal - Safety
Open Data Verified Data
low toxicity. Microsomal mutation test: cold bacteria 10 Ug/dish. See furfural.
Last Update：2022-01-01 10:57:01
5-nitro-2-furfural diacetyl acetal - Reference Information
| LogP | 1.06 at 20℃ |
| 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 as a pharmaceutical intermediate for preparation of furazolidone anti-infective drugs furazolidone, furacilin, furacilin, was used for nitrofurazone production. |
| production method | furfural is obtained by nitration and esterification. Add acetic anhydride to the reaction Pan, cool down to -5 ℃, add Dropwise mixed acid (nitric acid and sulfuric acid) of 1/5 of the amount of material, and then add Dropwise nitric acid and furfural (1:2 volume) at the same time the temperature of the mixed solution was controlled at about 0 ° C., the mixture was added for about 5-6h, and a portion of furfural was added dropwise. Then, the mixture was stirred for 1H, water and sodium carbonate solution were added, and the temperature was raised to 55-62 ° C. For 1H. The product was cooled to 15 °c, filtered, washed with water, and spin-dried to yield 85%. |
Last Update：2024-04-09 21:04:16
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