emily@bohanchem.com

　　Ultraviolet Absorbent UV-328/ 3028/ Cyasorb UV 2337/ Tinuvin 328/ Eversorb74/ Lowilite 28/ UV absorber

　　S kype: emily.shen.nj

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

　　Ultraviolet Absorber UV-328

　　Chemical Name 2-( 2H-benzotriazol-z-yl) -4, 6-di-tert-pentylphenol

　　Chemical Formula C22H29N3O

　　CAS NO. 3896-11-5

　　Product Intro

　　This product is a benzotriazole ultraviolet absorber. It is one of the fine varieties of light stabilizer , its advantages are: stable performance, low toxicity, strong ultraviolet absorbability, can be used in the plastic wrappings and children plastics. Can be used in the polypropylene , polyethylene, can be used in such products as the polyvinyl chlornamee, lucite, ABS resin, coating, petroleum products and rubber, etc.. This product has good dissolubility with many kinds of high polymers, and concurrently it has anti-oxygen performance, can use together with antioxidant

　　Main Indexes

　　Appearance: light yellow powder

　　Content: > = 99%

　　Melting Point: 80-83.C

　　Loss on Drying: = 98%

　　Solution : It can dissolve in benzene, toluene, ethyl acetate and petroleum ether, slightly dissolve in ethanol and methyl alcohol, can not dissolve in water.

　　Characteristics and Uses

　　It is a high performance Ultraviolet Absorber. Its maximum ultraviolet absorption peak is 345nm, its light stability is similar to UV-326 and UV-327, but this product has good dissolubility with the resins. Its heat volatility is low and its durability to washing is very good. It is mainly used in polyethylene, polypropylene, polystyrene, polyvinyl chlornamee, polyester, epoxy resin, ABS resin and cellulosic resin, etc., about 1% of general consumption. Has a fine light stability too in various kinds of coating.

　　Storing and Packing

　　( 1) UV-328 is nontoxic, uninflammable, unexplosive and incorrosive, has good storage stability.

　　( 2) cardboard drum inner lining plastic bag, each drum 25kg net weight

　　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.