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
Chromium(Ⅲ) potassium sulfate dodecahydrateCOA Report
  • CAS No.：7788-99-0
  • Molecular weight：499.40
  • Aliases：Alum chrome
  • Molecular formula：KCr(SO4)2·12H2O
  • EC No.：233-401-6
  • HS-No：28333000
Information
Specification category：
Product No. Product name specifications
1.01774.010 Chromium potassium sulfate dodecahydrate AR500g
1.01774.020 Chromium potassium sulfate dodecahydrate CP500g
1.01774.030 Chromium potassium sulfate dodecahydrate AR25kg
1.01774.040 Chromium potassium sulfate dodecahydrate CP25kg
1.01774.040 Chromium potassium sulfate dodecahydrate CP25kg
Characteristic： Appearance and properties: Deep violet,odorless solid.
pH value: 3(50g/L H2O,20℃)
Relative density: 1.83(water=1)(20℃)
Melting point(℃): 89
Concentration: Pure
Solubility: Soluble in water (4eq. cold water or 2eq. hot water) and dilute acid,insoluble in alcohol.
Technical indicators：
Item AR CP
Assay[KCr(SO4)·12H2O] ≥99.5% ≥99.0%
Insoluble matter in water ≤0.005% ≤0.01%
Chloride(Cl) ≤0.002% ≤0.005%
Ammonium salt(NH4) ≤0.01% ≤0.03%
Aluminum(Al) ≤0.02% ≤0.05%
Iron(Fe) ≤0.005% ≤0.02%
Heavy metals(as Pb) ≤0.002% ≤0.01%
Related Products

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