日韩一级a毛大片在线电影_久久精品视频全部观免费_免费看国产黄色网站_2020每曰更新国产精品视频

 2-(2'-Hydroxy-5'-methylphenyl)benzotriazole;Drometrizole;Tinuvin P;UV-P
Introduction :

CAS NO : 2440-22-4

Molecular formula: C13H11N3O
Structure :
Appearance :white to light yellow powder

Melting Range : 128-132 °C

Assay:≥99.0%

 transmittance:440nm>97% 550nm>98%
Storage and packing: UV-P is non-toxic, inflammble, non-corrosive; fiber drum with inner plastic bag; net weight: 25kg  or according to customer requirements

UV-P is high effective ultraviolet absorbent. It is widely used in PVC, polypropylene, unsaturated polyester resin, ABS resin, epoxy resin, fiber resin and polyethylene fields.