av不卡无码中文字幕_亚洲综合一区精品自拍明星_天天射夜夜爽_韩日三级免费电影_成人剧情av麻豆映画国产_五月深深久久精品黄色网站_91精品国产自产在线观永久_青榴社区无修在线观看视频_欧美成 人影片 免费观看_天堂中文在线最新版网站

Provide two kinds of PPD:White lump ,White flake .

Purity (%):White color:99 .9min

Application:

Dye intermediate:Azo dyestuff,Sulphur dyestuff,Acid dyestuff and rubber antioxidant

Polymerization:PPD+Terepht haloyl chloride → polyterepht haloyl-p-phenylene diamine fibre

Dyestuff:PPD+HCL+HF →Black dyestuff

Gasoline polymerization inhibitor and developer,airplane coatings , bullet-proof garments and wall coatings ,etc

Production Properties:White to reddish colcr to dust color.The
color will darken if exposed in the air.Stored in airproof,dry space   away from light.

Easy to dissolve in hot water,ethanol ,aether,chloroform , ratherish  to dissolve in cold water.