5-Nitrobarbituric acid
- CAS NO.：480-68-2
- Empirical Formula: C4H3N3O5
- Molecular Weight: 173.08
- MDL number: MFCD00006667
- EINECS: 207-557-0
- SAFETY DATA SHEET (SDS)
- Update Date: 2026-09-12 18:52:58
What is 5-Nitrobarbituric acid?
Chemical properties
Prisms and leaflets from water.Slightly soluble in water; soluble in alcohol and sodium hydroxide solution; insoluble in ether.
The Uses of 5-Nitrobarbituric acid
Microreagent for potassium.
Purification Methods
Crystallise diliuric acid from water as the trihydrate (m 180-181o (dec). Drying over 70% H2SO4 converts the trihydrate to the dihydrate [Loeffler & Moore J Am Chem Soc 70 3650 1948]. [Beilstein 24 H 474, 24 II 273, 24 III/IV 1882.]
Properties of 5-Nitrobarbituric acid
| Melting point: | 180.5°C |
| Boiling point: | 303.69°C (rough estimate) |
| Density | 1.79±0.1 g/cm3(Predicted) |
| refractive index | 1.5000 (estimate) |
| storage temp. | Store at -20°C |
| pka | -1.70±0.20(Predicted) |
| form | Solid |
| color | Off-white to light yellow |
| Merck | 6585 |
| CAS DataBase Reference | 480-68-2(CAS DataBase Reference) |
| EPA Substance Registry System | 2,4,6(1H,3H,5H)-Pyrimidinetrione, 5-nitro- (480-68-2) |
Safety information for 5-Nitrobarbituric acid
Computed Descriptors for 5-Nitrobarbituric acid
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