First, the product name Chinese name: allantoin Chinese Nickname: 2-5- dioxo-imidazolidinyl urea INCI name: Allantoin CAS #: 97-59-6 Second, technical indicators Item Index Appearance white crystalline powder Odor no odor PH value 4.0-6.0 purity of 98.5% -101.0% Melting point 228-235 ℃ Heavy metals (as Pb) ≤10ppm ≤0.10% Loss on drying ≤0.1% Residue on ignition 3, Application allantoin aka 5- urea hydantoin groups belonging to the imidazole heterocyclic compounds, there are two kinds of keto and enol tautomers, is soluble in cold water and ethanol, can be dissolved in hot water, hot alcohol and glycerin. 1, in medicine: allantoic book promote cell growth, accelerate wound healing, the physiological function of keratin, such as softening, good healing agents and anti-ulcer agents of skin wounds. 2, in cosmetics: As allantoin is an amphoteric compound can form a complex salt with a variety of substances, with dark, antiseptic, analgesic, anti-oxidation, to keep the skin moisture, moist and soft, is beauty salons and other cosmetic effects of additives. Fourth, Packing carton: 25 kg / barrel five, stored in a dark, cool, dry place, sealed. Shelf life of 24 months.