杏彩体育

SZSE：002741
杏彩体育:
Chemical Reagents
Sodium dichromate dihydrate杏彩体育:COA Report
  • CAS No.：7789-12-0
  • Molecular weight：297.99
  • Molecular formula：Na2Cr2O7·2H2O
  • UN Code：3086
  • EC No.：234-190-3
  • HS-No：28413000
Information
Specification category：
Product No. Product name specifications
1.01416.015 Sodium dichromate dihydrate AR500g
1.01416.025 Sodium dichromate dihydrate CP500g
1.01416.035 Sodium dichromate dihydrate AR25kg/drum
1.01416.075 Sodium dichromate dihydrate AR2.5kg/Sack
1.01416.085 Sodium dichromate dihydrate Spec25kg/drum
1.01416.085 Sodium dichromate dihydrate Spec25kg/drum
Characteristic： Appearance and properties: nacarat crystal,deliquescent.
Relative density (water=1): 2.35
Melting point(℃): 357(no water)
Boiling point(℃): 400(no water)
Concentration: assay: technical grade firstclass, secondary≥98.0%.
Solubility: Soluble in water,Dissolved in ethanol.
Technical indicators：
Item AR CP
Assay(Na2Cr2O7•2H2O) ≥99.5% ≥99.0%
Insoluble matter in water ≤0.003% ≤0.01%
Chloride(Cl) ≤0.005% ≤0.02%
Sulfate(SO4) ≤0.02% ≤0.05%
Aluminum(Al) ≤0.002% ≤0.005%
Calcium(Ca) ≤0.005% ≤0.02%
Iron(Fe) ≤0.0005% ≤0.001%
Hazard characteristics： IATA-DGR UN 3086 TOXIC SOLID,OXIDIZING,N,O,S(SODIUM DICHROMATE),6,1(5.1),II
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