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SZSE:002741
Chemical Reagents
Sodium dichromate?dihydrateCOA 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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