Methylparaben cas no 99-76-3
Product Details
| Item | Specification |
| Appearance | White powder |
| Purity (on dry base ) % | 98.0-102.0 |
| Melting Point ºC | 125-128 |
| Acid | Not more than 0.1 ml of 0.1 N sodium hydroxide is required to produce a blue color |
| Identification | A. Infrared absorption Spectrophotometry B. Thin-Layer Chromatographic |
| Residue % | ≤0.1 |
| Loss on drying % | ≤0.5 |
| Heavy Metal ( Pb) | ≤10ppm |
| Residual solvents (Methanol) | <3000PPM |
| Related Substances | P-Hydroxybenzoic acid: ≤0.5% Unspecified impurities: ≤0.5% Total impurities: ≤1.0% |
| Color of solution | 100mg/ml in alcohol,The solution is clear. |
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