在线无码一区二区三区不卡|国产精品爽爽久久久久久竹菊|中文字幕在线无码一区二区三区|中文字幕精品无码一区二区

SZSE:002741
Chemical Reagents
Potassium carbonate anhydrousCOA Report
  • CAS No.:584-08-7
  • Molecular weight:138.21
  • Aliases:Potassium carbonate
  • Molecular formula:K2CO3
  • EC No.:209-529-3
  • HS-No:28364000
Information
Specification category:
Product No. Product name specifications
1.01860.020 Potassium carbonate anhydrous AR500g
1.01860.030 Potassium carbonate anhydrous AR25kg
1.01860.040 Potassium carbonate anhydrous CP500g
Characteristic: Appearance and properties: White powder or parcitle crystal,very sensitive to moisture.
Relative density: 2.43(water=1)(20℃)
Melting point(℃): 891
Concentration: Pure
Solubility: Dissolve easily in water,insoluble in ethanol and ether.
Technical indicators:
Item AR CP
Assay(K2CO3) ≥99.0% ≥98.0%
Clarity of solution Pass3 Pass5
Insoluble matter in water ≤0.005% ≤0.03%
Chloride(Cl) ≤0.003% ≤0.01%
Sulfur compound(as SO4) ≤0.003% ≤0.01%
Total nitrogen(N) ≤0.001% ≤0.01%
Phosphate and silicate(as SiO2) ≤0.005% ≤0.02%
Loss on drying ≤1.0% ≤2.0%
Sodium(Na) ≤0.05% ≤0.10%
Magnesium(Mg) ≤0.002% ≤0.005%
Calcium(Ca) ≤0.002% ≤0.02%
Iron(Fe) ≤0.0005% ≤0.002%
Copper(Cu) ≤0.0005% ≤0.001%
Lead(Pb) ≤0.0005% ≤0.001%
Related Products

Copyright ? Guangdong?Guanghua?Sci-Tech?Co.,?Ltd. GuangDong ICP No. 14033791-1
久久久精品国产sm最大网站| 无码av大香线蕉伊人久久| 裸体美女无遮挡免费网站| 欧美日韩国产码高清| 人妻熟妇乱又伦精品视频app| 人摸人人人澡人人超碰| 国产av一区二区三区区别| 欧美三级中文字幕在线观看 | 免费又黄又爽又色的视频| 久一有码中文字幕在线| 国产精品国产三级国产av剧情 | 亚洲一区二区有码在线| 黄瓜视频在线观看| 欧美日韩综合一区二区三区| 国产亚洲精品久久久久婷婷瑜伽| 国产日韩精品suv| 欧美一区二区三区久久综| 韩国三级丰满少妇高潮| 成人a级毛片免费观看av网站 | 好看精品日本一区二区| 天天做天天添av国产亚洲| 成人区男人天堂av网| 国产精品久久久久久久9999| 最好看的中文字幕久久| 亚洲国产精品一区二区第四页 | 久久精品中文字幕无码| 国产中文字幕精品视频| 亚洲人妻av伦理| 精品国产乱码久久久久乱码| 国产精品无码a∨麻豆| 亚洲最大av一区二区三区| 国产在线无码精品电影网| 午夜福利理论片在线观看播放| 妺妺窝人体色www在线| 日韩一区二区三区高清电影| 久久久久久亚洲精品成人| 午夜精品久久久久久久久| 99精品久久精品一区二区| 亚洲av片无码久久五月 | 国产福利一区二区三区在线观看 | 久久精品中文字幕大胸|