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Chemical name : 2- (2'-Hydroxy-5'-tert-octylphenyl)benzotriazole
Formula : C20H25N3O
Molecular Weight : 323
CAS NO : 3147-75-9
Specification:
Appearance : white powder Assay: 99%Min Melting Range : 103-105 °C Transmittance: @440nm≥ 97 %;@500nm≥ 98% Ash: 0.1%Max Loss on drying: 0.5%MaxIntroduction : UV-329 is a benzotriazole type ultraviolet light absorber (UVA), imparting good light stability for plastics and other organic polymers. UV-329 is an effective light stabilizer for a variety of plastics and other organic substrates.
Solubility At 20 °C (g/100ml solvent)
Solvent | Benzene | styrene | n-heptane | Ethyl Acetate | Ethyl Alcoho (95%) | ethylene glycol | Water |
Solubility | 39.2 | 33.0 | 7.4 | 21.8 | 0.6 | 0 | 0 |
Applications
1. Unsaturated Polyester : 0.2-0.5wt% based on polymer weight. 2.PVC:Rigid PVC : 0.2-0.5wt% based on polymer weightPlasticized PVC : 0.1-0.3wt% based on polymer weight. 3.Polyurethane : 0.2-1.0wt% based on polymer weight.4.Polyamide : 0.2-0.5wt% based on polymer weight.
Packing: 20kg PE bag, 25kg paper carton or drum.
Next product:UV-1130