国产亚洲AV片在线观看18女人,日韩精品极品视频在线观看免费,日产精品卡二卡三卡四卡区,国产精品欧美久久久久无广告,人妻插B视频一区二区三区

SZSE:002741
Chemical Reagents
Nigrosine (water soluble)COA Report
  • CAS No.:29512-49-0
Information
Specification category:
Product No. Product name specifications
1.24431.010 Nigrosine (water soluble) BS25g
Characteristic: Appearance and properties: solid, black or gray, almost tasteless.
pH value: ~ 10 (10 g / l H2O, 20 ℃)
Bulk density: ~ 750kg/m3
Related Products

Copyright ? Guangdong?Guanghua?Sci-Tech?Co.,?Ltd. GuangDong ICP No. 14033791-1