SZSE:002741
Chemical Reagents
Potassium dichromateCOA Report
  • CAS No.:7778-50-9
  • Molecular weight:294.19
  • Aliases:Potassium pyrochromate
  • Molecular formula:K2Cr2O7
  • UN Code:3086
  • EC No.:231-906-6
  • HS-No:28415000
Information
Specification category:
Product No. Product name specifications
1.01787.025 Potassium dichromate PT100g
1.01787.045 Potassium dichromate AR500g
1.01787.055 Potassium dichromate CP500g
1.01787.065 Potassium dichromate CP25kg
1.01787.095 Potassium dichromate AR25kg
Characteristic: Appearance and properties: Orange crystal.
Relative density: 2.69(water=1)(20℃)
Melting point(℃): 398
Concentration/content: Industrial grade: first grade,second grade≥98.0%.
Solubility: Soluble in water,insoluble in ethanol.
Technical indicators:
Item AR CP
Assay(K2Cr2O7) ≥99.8% ≥99.5%
Insoluble matter in water ≤0.005% ≤0.01%
Loss on drying ≤0.05% --
Chloride(Cl) ≤0.002% ≤0.005%
Sulfate(SO4) ≤0.01% ≤0.02%
Sodium(Na) ≤0.05% ≤0.1%
Calcium(Ca) ≤0.002% ≤0.01%
Iron(Fe) ≤0.002% ≤0.005%
Hazard characteristics:

IATA-DGR UN 3086 TOXIC SOLID,OXIDIZING,N.O.S.(POTASSIUM DICHROMATE),6.1(5.1),Ⅱ

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