国产青草视频在线播放视频,亚洲欧美日韩综合久久久久久

Products

3,3'-Dichlorobenzidine

Product name	3,3'-Dichlorobenzidine
CAS NO.	612-83-9
EC NO.	210-323-0
Structural formula
Molecular formula	C₁₂H₁₀N₂CL₂N₂
Molecular weight	253
Properties	White to greyish white crystal powder .It dissolves in ethylalcohol ,acid and in organic solvent.
Appearance	white to greyish white power-like crystals
Purity	≥99%
Use	pigment intermediates
Package	packed in 50kg paper board .bucked,it also can be parked in big (450×740). according to the requirement of the customers.

Order Back

欧美脚交精品一区二区三区四区|欧美日韩国产综合在线观看|久久久亚洲春色AV无码|国产av无码综合一区