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　　Ultraviolet Absorbent UV-329( UV-5411)

　　( 5411) 3029 Tinuvin 329 Cyasorb UV541 Eversorb72 Lowilite 29 UV absorber Ultraviolet Absorbent

　　Chemical Name 2-( 2' - Hydroxy -5' -tert-octylphenyl) Benzotriazole

　　Chemical Formula C20H25N3O

　　CAS NO. 3147-75-9

　　Main Indexes

　　Appearance : White Powder

　　Content: > = 99%

　　Melting Point : 101-106°C

　　Ash: 97% 500nm> 98%

　　Characteristics and Uses

　　This product is an excellent high-efficiency, aging-preventing agent, capable of absorbing the ultraviolet radiation of 270-340 nanometers, widely applied to PE, PVC, PP, PS, PC, polypropylene fiber, ABS resin, epoxy resin, resin fiber and ethylene -vinyl acetate etc. It can be applied to plastic containers and food packing boxes as packaging materials, provide them good light-stabilizing effect. Dosage: 0.1-0.5% for thin products and 0.05-0.2% for thick products.

　　Storing and Packing

　　This product is nontoxic , fire-resistive, explosive-resistive, and well stable in storing. It is packed in cardboard drum lined with plastic bags with the net capacities of 25 kg and 50 kg; it can also be packed according to customers' requirements.

　　Bohanchem offers plastic additives ( chemical additives) such as optical brightener ( optical brightening agent, fluorescent whitening agent) , UV absorber ( UV absorbent) , light stabilizer ( light stabilizing agent, UV stabilizer, UV stabilizing agent) , antioxidant, pigment.

　　Main Products:

　　Polymerization retarder: 701 ( 4-hydroxy-TMHPO, TEMPO)

　　Fluorescent whitening agent: OB, OB-1, KCB, FP-127, KS, NFW

　　UV absorbers: UV-0, 531( BP-12) , UV-9, UV-P, 326, 327, 328, 329( 5411) , UV-T, 234, 571, 320

　　Antioxidant : 1010, 1076, 168, 264, 1098, 2246, 300, 311, B102, DLTP, DSTP, B215, B225, B900

　　Light stabilizer: 622, 770, 944, 802

　　Pigments: red 122, red 254, violet 19, violet 23, yellow 110, yellow 138, titanium dioxide