Methylparaben CAS#99-76-3

Methylparaben CAS#99-76-3

Methylparaben is a colorless crystalline powder with a faint characteristic odor and a slight burning taste. It is slightly soluble in water but easily dissolves in ethanol, ether, acetone, and other organic solvents. One gram can dissolve in 2.5 ml of ethanol, approximately 4 ml of propylene glycol, or 400 ml of water at 25°C or about 50 ml of water at 80°C. It is commonly used as a fungistat in soft drinks, non-leavened bakery products, and other products, with a permissible level of up to 0.1%. To inhibit Gram-positive bacteria, 1000 to 4000 ppm are required, and its effectiveness increases with decreasing pH, similar to benzoates.

Product Application of Methylparaben CAS#99-76-3

Methylparaben is the ester of methyl alcohol and p-hydroxybenzoic acid, It is a bacteriostatic agent and preservative that was added to local anesthetic agents without vasoconstrictors before 1984 to prevent bacterial growth. Allergic reactions developed from repeated exposures to parabens led to the removal of this agent from dental anesthetic solutions. Similar products produced by similar production methods, like ethyl p-hydroxybenzoate (paraben B) and propyl p-hydroxybenzoate (Nepalese c), are also disinfectant preservatives. The products are irritating to the skin.

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