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
中文字日产幕乱五区| 国产熟妇搡bbbb搡bbbb| 久久不见久久见免费影院| 欧美一区二区三区成人片在线 | 亚洲日韩成人无码| 99精品产国品一二三产区| 亚洲乱码精品久久久久.. | 成人性生交大片免费看vr| 久久欧美国产伦子伦精品| 乱色欧美激惰| 三年片在线观看免费观看大全中国 | 亚洲综合激情七月婷婷| 亚洲一道一本快点视频| 欧美亚洲国产精品久久蜜芽直播| 亚洲av无码专区亚洲av伊甸园| 妇女性内射冈站hdwww000| 狠狠躁夜夜躁人人爽超碰97香蕉| 国产传媒视频一区二区| 性暴力欧美猛交在线播放| 99久久精品日本一区二区免费| 亚洲香蕉伊综合在人在线观看| 亚洲熟妇色xxxxx欧美老妇y| 免费精品99久久国产综合精品| 亚洲视频偷拍精品久久| 狠狠色综合久久丁香婷婷| 黑人糟蹋人妻hd中文字幕| 香蕉免费一区二区三区| 日本精品少妇一区二区三区| 国产精品久久久久无码av| 国产精品妇女一二三区| 国产精品爱久久久久久久电影蜜臀 | 男人天堂av自拍一区| 久久久久人妻精品一区三寸| 国产人妖在线免费观看| 日本高清www午色夜在线视频| 又色又爽又黄又无遮挡的网站 | 丝袜 中出 制服 人妻 美腿| 少妇被粗大的猛烈进出96影院| av国产剧情md精品麻豆| 国产特级毛片aaaaaaa高清| 男女乱婬真视频|