1-Phenylsemicarbazide hydrochloride
Phenicarbazide
CAS: 103-03-7
Molecular Formula: C7H9N3O
1-Phenylsemicarbazide hydrochloride - Names and Identifiers
| Name | Phenicarbazide |
| Synonyms | Febrimin Phenicarbazide Fenylsemikarbazid 1-phenylsemicarbazide cryogenine(pharmaceutical) 2-phenylhydrazinecarboxamide Hydrazine, 1-carbamoyl-2-phenyl- 1-Phenylsemicarbazide hydrochloride |
| CAS | 103-03-7 |
| EINECS | 203-072-3 |
| InChI | InChI=1/C7H7N3O/c8-7(11)10-9-6-4-2-1-3-5-6/h1-5H,(H2,8,11) |
1-Phenylsemicarbazide hydrochloride - Physico-chemical Properties
| Molecular Formula | C7H9N3O |
| Molar Mass | 151.17 |
| Density | 1.2100 (rough estimate) |
| Melting Point | 171-174 °C (lit.) |
| Boling Point | 273.17°C (rough estimate) |
| Solubility | acetone: very soluble(lit.) |
| Appearance | White to light yellow powder |
| Color | White to Light yellow |
| BRN | 743311 |
| pKa | 11.16±0.43(Predicted) |
| Storage Condition | Keep in dark place,Inert atmosphere,Room temperature |
| Refractive Index | 1.5860 (estimate) |
| MDL | MFCD00007942 |
| Physical and Chemical Properties | 1-phenyl semicarbazide is flake crystal, the crude product is gray solid, M.P. 169~172 ℃, easily soluble in hot water, ethanol, methanol, acetone, insoluble in cold water, ether, benzene. |
1-Phenylsemicarbazide hydrochloride - Risk and Safety
| Hazard Symbols | Xn - Harmful |
| Risk Codes | 22 - Harmful if swallowed |
| Safety Description | 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. S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. |
| WGK Germany | 3 |
| RTECS | FD0575000 |
| TSCA | Yes |
| HS Code | 29280090 |
1-Phenylsemicarbazide hydrochloride - Reference Information
| (IARC) carcinogen classification | 3 (Vol. 12, Sup 7) 1987 |
| EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
| Use | 1-phenylsemicarbazide is used to synthesize the intermediate 1-phenyl -1,2, 4-triadimenol, which is also used in the pharmaceutical industry to make antipyretic agents. |
| production method | its preparation method is formed by reacting phenylhydrazine and urea as raw materials. 136kg phenylhydrazine hydrochloride, 98kg urea and 240L water were added to the 1000L reactor. Stir evenly and raise the temperature to above 100 ℃ for condensation reaction. After 6h of reaction, 280L of water is added, cooled to 5 ℃, and filtered to obtain 1-phenylsemicarbazide with a content of more than 95% and a yield of more than 93%. |
| category | toxic substances |
| toxicity classification | poisoning |
| acute toxicity | abdominal cavity-mouse LD50: 198 mg/kg |
| flammability hazard characteristics | thermal decomposition emits toxic nitrogen oxide smoke |
| storage and transportation characteristics | warehouse low temperature ventilation and drying |
| fire extinguishing agent | water, carbon dioxide, foam, dry powder |
Last Update：2024-04-09 21:11:58
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