中文字幕亚洲欧美日本懂色,亚洲视频一区在线色婷婷,天天干天天干天天日天天操,麻豆国产精品777777在线,欧美一区二区三区另,中文字幕丰满人妻日本了,熟妇人妻av中文字幕在线,最新福利免费视频一区二区,伊人少妇精品在线观看视频

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