semicarbazide
semicarbazide
CAS: 57-56-7
Molecular Formula: CH5N3O
semicarbazide - Names and Identifiers
| Name | semicarbazide |
| Synonyms | amino-ure Carbazamide Aminomocovina semicarbazide Carbamylhydrazine carbamoyl-hydrazin Hydrazine, carbamoyl- Hydrazine Carboxamide carbamicacid,hydrazide |
| CAS | 57-56-7 |
| EINECS | 200-339-6 |
| InChI | InChI=1/CH5N3O/c2-1(5)4-3/h3H2,(H3,2,4,5) |
semicarbazide - Physico-chemical Properties
| Molecular Formula | CH5N3O |
| Molar Mass | 75.07 |
| Density | 1.286±0.06 g/cm3(Predicted) |
| Melting Point | 96°C |
| Boling Point | 133.71°C (rough estimate) |
| pKa | pK1:3.53(+1) (25°C,μ=0.1) |
| Refractive Index | 1.4451 (estimate) |
| Physical and Chemical Properties | Chemical properties white flake crystals. Melting point 96 ℃. Easily soluble in water, insoluble in ethanol and ether. Easy deliquescence. |
| Use | Uses Organic synthetic raw materials are also intermediates of medicines and pesticides and reagents for the determination of aldehydes and ketones. Used to produce drugs such as furanocoline and nitronitrofurantoin. |
semicarbazide - Risk and Safety
| Hazard Symbols | Xn - Harmful |
| Risk Codes | 22 - Harmful if swallowed |
| Safety Description | S22 - Do not breathe dust. |
| WGK Germany | 3 |
semicarbazide - Upstream Downstream Industry
semicarbazide - Nature
Open Data Verified Data
White Flake Crystal, easy deliquescence. Melting point 96. Soluble in water, insoluble in ethanol and ether.
Last Update：2024-01-02 23:10:35
semicarbazide - Preparation Method
Open Data Verified Data
- urea-hydrazine hydrate synthesis method urea as raw material, and hydrazine hydrate reaction. Urea and hydrazine hydrate are put into a reaction tank at a ratio of 1:1.5, heated and stirred for dissolution, maintained at 95-103 ° C. For 8 hours, cooled and filtered after completion of the reaction to obtain semicarbazide finished product.
- hydrazine sulfate-sodium cyanate method hydrazine sulfate was reacted with sodium cyanate.
Last Update：2022-01-01 10:36:35
semicarbazide - Use
Open Data Verified Data
organic synthesis of raw materials, but also medicine, pesticide intermediates and determination of aldehyde, ketone reagents.
Last Update：2022-01-01 10:36:34
semicarbazide - Safety
Open Data Verified Data
This product has certain toxicity. Animals: rats were intraperitoneally injected with LD50 140mg/kg; Mice were intraperitoneally injected with LD50123mg/kg.
Last Update：2022-01-01 10:36:35
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