| Appearance | White crystalline powder |
| Purity (on dry base)% | 98.0-104.0 |
| PH value(0.1%water liquor) | 9.5-10.5 |
| Sulfate(ppm) | =<300 |
| Chlorides(ppm) | =<350 |
| Loss on drying % | =<0.50 |
| Organic volatile impurities | Meets BP2000/usp24 STANDARD |
| Completeness of solution | Meets Bp2000/usp24 STANDARD |
| Heavy metals (Pb)ppm | =<10.0 |
| Apprearance of solution | Clear and transparent |
| ITEM | STANDARD |
| Appearance | White crystalline powder |
| Purity (on dry base)% | 99-100.5 |
| Melting point °C | 69-72 |
| Sulphated ash % | =<0.05 |
| Acidity (mlNaOH0.1M) | =<0.1 |
| Loss on drying % | =<0.5 |
| Residue % | =<0.10 |
| Arsenic (ppm) | =<1.0 |
| Heavy metals (Pb)ppm | =<10 |
| Mercury (mg/kg) | <1 |
| lead (mg/kg) | <5 |
| Clarity and color of solution | Clear and transparent |
Sodium methylparaben
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