Methyl 4-hydroxybenzoate is also called methylparaben. This paraben is a white crystalline powder or colorless crystals. It is freely soluble in alcohol, ether, and acetone and very slightly soluble in water. Methyl 4-hydroxybenzoate boiling point is 270~280℃.
99-76-3
C8H8O3
152.15
Item | Index |
---|---|
Appearance | White Powder |
Assay (on a dry basis) | 99.0-100.5% |
Melting Point | 125-128 deg. C |
Residue on Ignition | 0.1% Max. |
Sulphated Ash | 0.05% Max. |
Acidity | 0.1mL |
Appearance of Solution | passed |
Related Substances | 0.5 |
Heavy Metal (Pb) | 10ppm Max. |
Residual Solvents | 3000ppm Max. |
Loss on Drying | 0.5% |
Methyl 4-hydroxybenzoate is mainly used as an antiseptic in foodstuffs, medicine, and cosmetics. Methyl 4-hydroxybenzoate can also be used in feed as an antiseptic. Because of its phenolic hydroxyl structure, methyl 4-hydroxybenzoate has more potent antibacterial properties than benzoic acid and sorbic acid.
Packed with cardboard drum (Φ36×46.5cm) of 25 kg net each, double PE inner bag inside.
Methyl 4-hydroxybenzoate danger is mainly in the production process. Workers’ exposure to raw powder will cause obvious irritation to the skin and eyes. Methyl 4-hydroxybenzoate side effects are mainly in cosmetics. Excessive use of parabens can cause skin allergies.
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