久久99精品久久久久久hb亚瑟-免费看无码毛视频成片-99热这里只有精品免费播放-亚洲精品少妇高清30p-国产午夜福利精品久久2021

SZSE:002741
Chemical Reagents
Potassium carbonate anhydrous COA 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
主站蜘蛛池模板: 日本久久久久久久久久加勒比 | 国产毛1卡2卡3卡4卡免费观看 | 国产天堂久久天堂av色综合 | 色狠狠成人综合网| 精品夜夜爽欧美毛片视频| 67194成是人免费无码| 在线 欧美 中文 亚洲 精品| 日本成熟少妇喷浆视频| 国产亚洲精品一品区99热| 国产精品涩涩涩视频网站| 少妇午夜啪爽嗷嗷叫视频| 极品少妇hdxx麻豆hdxx| 伊人久久大香线蕉综合直播| 国产精品妇女一二三区| 日日摸天天摸爽爽狠狠97| 免费毛片在线看片免费丝瓜视频| 国产熟妇按摩3p高潮大叫 | 国产三级久久精品三级| 国产精品爱久久久久久久电影| 四虎亚洲国产成人久久精品| 免费久久99精品国产自在现线| 一区二区三区视频| 中日韩中文字幕无码一本| 超碰色偷偷男人的天堂| 羞羞影院午夜男女爽爽影院网站 | 久久99成人免费| 欧美另类在线制服丝袜国产| 欧美激欧美啪啪片免费看| 少妇无码av无码去区钱| 精品亚洲成a人在线看片| 亚洲乱码日产精品bd在线观看 | 亚洲成无码电影在线观看| 亚洲丰满熟女一区二区v| 国产奶头好大揉着好爽视频| 精品人人妻人人澡人人爽人人| 国产av一码二码三码无码| 久久2017国产视频| 18禁成人???猛撞视频在线看| 999zyz玖玖资源站永久| 久久久精品日本一区二区三区| 色一情一区二|