UV ABSORBER UV 329 TINUVIN 329 CYASORB UV 5411 EQUIVALENT
  • Company : Guangzhou Chengshuai New Material Co.,Ltd.
  • Region : Guangdong , China
  • Category : Chemicals > Other Chemical Auxiliaries
  • Specification : Appearance: White powder Melting point???103-105 Assay (HPLC), %: ?99 Ash, %: ?0.1 Loss on drying, %: ?0.3 Transmittance 450nm?98% 500nm?99%
  • Quantity : 50MT
  • Price : Negotiable
  • Contact Person : David|||Sales Manager
  • Telephone :
  • Website : WWW.HHOCHEM.COM
  • Email : [email protected]
  • Update : Mar/26/2019
  • Product Details

    Chemical name: 2- (2'-Hydroxy-5'-tert-octylphenyl)benzotriazole CAS No.?3147-75-9 Molecular formular?C20H25N3O Molecular weight?323 Molecular structure Specification Appearance: White powder Melting point???103-105 Assay (HPLC), %: ?99 Ash, %: ?0.1 Loss on drying, %: ?0.3 Transmittance 450nm?98% 500nm?99% Solubility (20?, g/100ml solvent) Acetone:9 Benzene:32 Chloroform:37 Ethyl acetate:15 n-Hexane:6 Methanol:0.6 Methylene chloride:38 Water?0.01 Application UV ABSORBER HOSORB-329 is excellent benzotriazole ultraviolet absorbent with effective absorption of ultraviolet radiation in 270-380 nm region. It is suitable for polyester, rigid PVC, PS, PMMA, PC, ABS resin etc. It is particularly suitable for the protection of polycarbonates. In transparent products and high temperature processing of engineering plastics, its effect is excellent. It can also be used for polyolefin. Packing 25kg/fiber drum; 25kg/carton, or as per customer’s request. Storage Containers should be kept tightly closed when not in use. Store it in a dry, cool, well-ventilated shady place. Recommended Dosage Unsaturated Polyester : 0.2-0.5% Rigid PVC : 0.2-0.5% Plasticized PVC : 0.1-0.3% Polyurethane : 0.2-1.0% Polyamide : 0.2-0.5%

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