Murexide
Synonym(s):5,5′-Nitrilodibarbituric acid monoammonium salt;Ammonium purpurate;Ammonium purpurate, acid;Murexide
- CAS NO.：3051-09-0
- Empirical Formula: C8H8N6O6
- Molecular Weight: 284.19
- MDL number: MFCD00012777
- EINECS: 221-266-6
- SAFETY DATA SHEET (SDS)
- Update Date: 2024-10-30 18:52:02
What is Murexide?
Chemical properties
Bordeaux powder
The Uses of Murexide
Murexide is used as a complexometric indicator in analytical chemistry for complexometric titrations of calcium, copper nickel and cobalt. It is an inhibitor of dihydrofolate reductase. Further, it acts as an enhancer of sonochemical destruction of chlorinated hydrocarbon pollutants.
The Uses of Murexide
Indicator for complexometric titrations.
What are the applications of Application
Murexide is a dye that passes the test for complexometric indicator
Purification Methods
The sample may be grossly contaminated with uramil, alloxanthine, etc., and may be difficult to purify. It is better to synthesise it from pure alloxanthine [Davidson J Am Chem Soc 58 1821 1936]. Recrystallise it from water. [Kuhn & Lyman Chem Ber 69 1547 1936, Beilstein 25 I 709, 25 III/IV 4236.]
Properties of Murexide
| Melting point: | 300 °C |
| Boiling point: | 443.25°C (rough estimate) |
| Density | 1.5756 (rough estimate) |
| refractive index | 1.8000 (estimate) |
| storage temp. | no restrictions. |
| solubility | 1g/l |
| form | Solid |
| pka | pK1:0.0;pK2:9.20;pK3:10.50 (25°C) |
| Colour Index | 56085 |
| color | Reddish-violet |
| Odor | Odorless |
| PH | 5 (1g/l, H2O, 20℃) |
| Water Solubility | Slightly soluble |
| Merck | 14,6306 |
| BRN | 3582175 |
| NIST Chemistry Reference | Ammonium purpurate(3051-09-0) |
| EPA Substance Registry System | 2,4,6(1H,3H,5H)-Pyrimidinetrione, 5-[(hexahydro-2,4,6-trioxo-5-pyrimidinyl)imino]-, monoammonium salt (3051-09-0) |
Safety information for Murexide
| Signal word | Warning |
| Pictogram(s) |
 Exclamation Mark Irritant GHS07 |
| GHS Hazard Statements |
H302:Acute toxicity,oral H315:Skin corrosion/irritation H319:Serious eye damage/eye irritation H332:Acute toxicity,inhalation H335:Specific target organ toxicity, single exposure;Respiratory tract irritation |
| Precautionary Statement Codes |
P280:Wear protective gloves/protective clothing/eye protection/face protection. P310:Immediately call a POISON CENTER or doctor/physician. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. |
Computed Descriptors for Murexide
| InChIKey | HZRQHQKDQSVFMQ-UHFFFAOYSA-N |
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