DMDM Hydantoin (DMDMH), 6440-58-0

There are two sterilization mechanisms of the preservative DMDMH cas:6440-58-0: one is to slowly release free formaldehyde to exert antibacterial and bactericidal effects, creating an environment that is not conducive to microbial growth; The second is that the N-hydroxymethyl group in the preservative is essentially a bactericidal group, which can have a bactericidal effect.Formaldehyde and formaldehyde releasing preservatives are cosmetic preservatives that have been found to cause contact dermatitis. For DMDM hydantoin, both it and the formaldehyde it releases may cause allergies. DMDM Hydantoin is effective in inhibiting Gram positive and Gram negative bacteria, yeast, and mold; Can be fully compatible with cationic, anionic, and nonionic surfactants, emulsifiers, and proteins. Maintain stability within a wide range of pH and temperature. A preservative with antimicrobial activity used in various cosmetics. Chemical name: 1,3-dihydroxymethyl-5,5-dimethylhydantoin, Its appearance is a colorless or light yellow liquid, with a pH value of 6-7, a density (25 ℃. g/cm3) of 1.150-1.180, a recommended dosage (%) of 0.1-0.3, an effective substance content (%) of 55 ± 2, a free formaldehyde (%) of ≤ 2.0, a usage temperature (℃) of ≤ 50, and easy solubility in water and lower alcohols. It should be stored in a dark, cool, dry place and sealed.