| ≥1 piece |
Chemical Name: methyl 4-hydroxybenzoate
Trade Name: methyl paraben
Molecular: C8H8O3
Molecular: 152.15
CAS#: 99-76-3
Physical and Chemical Properties: White crystalline. Easily dissolved in alcohol, ether, acetone and slightly dissolved in water. Its boiling point is 270-280 C. PH: 4-8 .
Usage: Mainly used as antiseptics in foodstuff, medicine and cosmetics. It can also ben used in feed as antiseptics.
| ITEM | SPECIFICATION | ||
| / | B.P 2009 | USP32 | |
| Appearance | / | white crystalline powder | / |
| Purity (on dry base)% | 99 | 99.0-100.5 | 98.0-100.5 |
| Melting point C | 125-128 | 125-128 | 125-128 |
| Acidity | qualified | qualified | qualified |
| Sulfate(SO 4 2- ) %≤ | 0.024 | / | / |
| Loss on drying %≤ | 0.5 | 0.5 | 0.5 |
| Residue %≤ | 0.1 | 0.1 | 0.1 |
| p-hydroxybenzoic acid and salicylic acid %≤ | 0.1 | / | / |
| Related Substances | / | qualified | / |
| Appearance of Solution | / | clear | / |
| organic Volatile impurities | / | / | qualified |
| Identification | / | / | qualified |