4-NITROPHENYLUREA
- CAS NO.：556-10-5
- Empirical Formula: C7H7N3O3
- Molecular Weight: 181.15
- MDL number: MFCD09040599
- SAFETY DATA SHEET (SDS)
- Update Date: 2026-05-27 17:18:22
What is 4-NITROPHENYLUREA?
Purification Methods
Crystallise the urea from EtOH or hot water. UV has max at 322nm (EtOH). [Beilstein 12 II 392, 12 III 1617, 12 IV 1645.]
Properties of 4-NITROPHENYLUREA
| Melting point: | 150℃ |
| Boiling point: | 314.24°C (rough estimate) |
| Density | 1.490 |
| refractive index | 1.5860 (estimate) |
| solubility | soluble in Methanol,Ethanol,Dimethylformamide |
| form | powder to crystal |
| pka | 13.79±0.70(Predicted) |
| color | Light yellow to Yellow to Orange |
| λmax | 327nm(EtOH)(lit.) |
| Merck | 14,6626 |
| CAS DataBase Reference | 556-10-5 |
Safety information for 4-NITROPHENYLUREA
| Signal word | Warning |
| Pictogram(s) |
 Exclamation Mark Irritant GHS07 |
| GHS Hazard Statements |
H315:Skin corrosion/irritation H319:Serious eye damage/eye irritation |
| Precautionary Statement Codes |
P264:Wash hands thoroughly after handling. P264:Wash skin thouroughly after handling. P280:Wear protective gloves/protective clothing/eye protection/face protection. P302+P352:IF ON SKIN: wash with plenty of soap and water. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. P332+P313:IF SKIN irritation occurs: Get medical advice/attention. P337+P313:IF eye irritation persists: Get medical advice/attention. |
Computed Descriptors for 4-NITROPHENYLUREA
New Products
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