Product Name: Excellent Ultraviolet Absorber CAS No. 5973-55-1; UV328 Model NO.: UV Absorbe Appearance: Powder Kind: UV Absorbe CAS No.: 5973-55-1 Purity: 99.0% Min Melting Point: 81.0 Temperature Min Volatiles: 0.50% Max Transmittance 460nm: 98.0% Min Transmittance 500nm: 99.0% Min Ash: 0.05% Max Trademark: SWE Transport Package: in 20kgs Net Carton Origin: China Product Description Excellent ultraviolet absorber. UV max: 345nm. Good solubility for polymer and little volatility. Mainly used for PE, PP,PS,PVC, poly ester and ABS resins, etc.Product Name UV 328IdentificationSynonyms2-(2'-Hydroxy-3',5'-di-tert-pentylphenyl)-benzotriazoleMolecular FormulaC22H29N3OMolecular Weight 351.49CAS Number 25973-55-1EINECS/ELINCS247-384-8PropertiesAppearance : light yellowish powder Melting Range: 80-83 °CSpecific Gravity: 1.17g/cm3 at 20 ºCSolubility: insoluble in water; soluble in acid, benzene, toluene, ethyl acetate and petroleum ether, slightly soluble in ethyl alcohol and methyl alcoholStability:stable under ordinary conditionsItemSpecificationAppearancelight yellowish powderPurity 99.0% minMelting point81.0ºC minVolatiles0.50% maxAsh0.05% maxTransmittance 460nm98.0% minTransmittance 500nm99.0% minPacking and StoragePacking In 20kgs net cartonStorage Keep tightly closed and store in cool and dry placeSafety InformationNon-hazardous for air, sea and road freight.