DESCRIPTION
| INCI Adopted Name: | Methyl Paraben |
| CAS Registry No.: | 99-76-3 |
| Molecular Formula: | C8H8O3 |
| Molecular Weight: | 152.15 |
| Structural Formula: | |
| Synonyms: | Methyl p-Hydroxybenzoate;
Methyl 4-hydroxybenzoate |
SPECIFICATIONS
| Item | Index |
| Q/SH008-2014/ BP/ USP | |
| Appearance | Colorless crystal or white crystalline powder |
| Content (dry basis)% | Min. 99.0 |
| Melting point ℃ | 125-128 |
| Acidity | Qualified |
| Sulfate (SO42-) %max. | 0.024 |
| Drying loss %max. | 0.50 |
| Residue on ignition %max. | 0.1 |
| P-hydroxybenzoic acid and salicylic acid %max. | 0.1 |
| Related substances | Qualified |
| Identification test | Qualified |
PROPERTIES
Appearance :white crystal.
Solubility: Easily soluble in diethyl ether, acetone. Very slightly soluble in cold water, hot water. 1 gram dissolves in about 40 ml of warm oil. 1 gram dissolves in about 70 ml of warm glycerol. Slightly soluble in carbon tetrachloride. Soluble in benzene, oils and fats. Solubility in water: 0.25% (wt/wt) @20 deg. C or 0.30% (wt/wt) @ 25 deg.C
PACKAGING
Standard packaging includes the following:
25kg per drum, 25kg/carton
Other package sizes are available upon request.
STORAGE
Store in a well-ventilated, cool, dry area, out of direct sunlight. Keep containers tightly closed when not in use.
PERIOD OF VALIDITY
36 months
FEATURE AND APPLICATION
Broad spectrum bactericide for gram positive, feminine germ and saccharomycetes;
Low application concentration, safe, economic, long serve life;
Recommended dosage: 0.2%~0.5%
It is widely used in cosmetic, medical and food industry for preservation.