| BRONOPOL |
| C.A.S No. |
52-51-7 |
| Molecular Formula |
C3H6BrNO4 |
| Chemical Name |
2-bromo-2-nitro-1,3-propanediol |
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Test |
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Specification |
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Description |
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White or almost white crystals or crystalline powder. |
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Solubility |
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Freely soluble in water and in ethanol (96%); slightly soluble in glycerol and in liquid paraffin. |
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Identification |
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A. The infrared absorption spectrum, is concordant with the reference spectrum of bronopol (RS 031).
B. Dissolve 0.1 g in 10 ml of water , add 10 ml of 7.5M sodium hydroxide and, carefully with constant stirring and cooling, 0.5 g of nickel-aluminium alloy. Allow the reaction to subside, filter and carefully neutralise with nitric acid. The resulting solution yields reaction A characteristic of bromides,
C. Melting point, after drying over phosphorus pentoxide at a pressure not exceeding 0.7 kPa, about 130 ºC |
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P H |
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Between 5.0 to 7.0 |
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Sulphated Ash |
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NMT 0.10 % w/w |
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Water |
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NMT 0.50% w/w |
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Related substances by HPLC |
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Single Impurity |
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NMT 0.50% |
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Total Impurities |
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NMT 1.00% |
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Assay (on anhydrous basis) |
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NLT 99.0% and NMT 101.0% |
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