Methyl p-hydroxybenzoate CAS 99-76-3, also called methylparaben or methyl paraben, is an organic substance with a chemical formula of C8H8O3. It is white crystalline powder or colorless crystal. It is easily soluble in alcohol, ether and acetone, very slightly soluble Due to the nature of water, the boiling point is 270-280°C. It is mainly used as antiseptic preservative for organic synthesis, food, cosmetics and medicine, and also used as feed preservative. Because of its phenolic hydroxyl structure, it has stronger antibacterial properties than benzoic acid and sorbic acid. Its mechanism of action is: destroying the cell membrane of microorganisms, denaturing the proteins in the cells, and inhibiting the activities of the respiratory enzymes and electron transfer enzymes of the microbial cells.

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Methyl paraben CAS 99-76-3, also methylparaben, one of the parabens, is a preservative with the chemical formula CH3(C6H4(OH)COO). It is the methyl ester of p-hydroxybenzoic acid. It exists in white crystalline powder, soluble in water (2.5 g/l) at 25° C, benzene (slightly soluble), carbon tetrachloride (slightly soluble), ethanol, ether, acetone, DMSO, methanol, warm oil (25 g/l), and warm glycerol (1 g/70 ml).

Specification

Appearance                             White crystalline Powder

Assay (on dry base ) %           99.0-100.5

Melting Point ºC                      125-128

Residue on Ignition %             ≤0.1 

Sulphated Ash %                     ≤0.05 

PH value                                  5.0-6.0 

Related Substances                ≤0.5 

Heavy Metal (Pb) ppm             ≤2.0

Application

Methylparaben is an anti-fungal agent often used in a variety of cosmetics and personal-care products. 

Methylparaben is also used as a food preservative and has the E number E218.
Methylparaben is commonly used as a fungicide in Drosophila food media.

Packing

25kg/fiber drum with double PE bags inside, or as per customer request