| ≥1 piece |
Factory sale cosmetic grade powder sodium methyl paraben food preservatives price
| Item | Standard |
| Appearance | colorless crystals or white crystalline powder |
| Assay (%) | 99.0-100.5 |
| Loss on drying | ≤0.50 |
| Residue on ignition (%) | ≤0.10 |
| Acidity | qualified |
| p-Hydroxybenzoic acid and salicylic acid (%) | ≤0.10 |
| Related substances | qualified |
| Appearance of solution | clear |
| Sulfate (SO4) (%) | ≤0.024 |
| Organic volatile impurities | / |
| Melting point (℃) | 125-128 |
| Storage | in the dry and cool place |
| Packing | 25kg/bag |
Applications of propylparaben:
Methylparaben, white crystalline powder or colorless crystal, soluble in alcohol, ether and acetone, very slightly soluble in water, boiling point 270-280 °C. It is mainly used as a bactericidal preservative for organic synthesis, food, cosmetics and medicine, and also as a preservative for feed.
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