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Potassium ferricyanide
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Sodium metabisulfite
45%potassium sulfite
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50%Potassium thiosulfate
Pharmaceutical intermediates
Ammonium oxalate
Chromium(Ⅲ) oxide


Chromium(III) Oxide

CAS No.: 1308-38-9                              EINECS No.:215-160-9
Beilstein                                                 MDL:MFCD00010949
Molecular formula:Cr2O3                  Molecular weight:152.02
Synonyms:chromic oxide;chrome green;chromium sesquioxide; Pigment Green
Chemical property:Hexagonal system or amorphous dark green powder. A metallic luster. Insoluble in water, Hardly soluble in acid, soluble in hot alkali bromate solution.
Quality standard

Item     Chemical reagent Europe's reagent company standard
         (AR)            (CP)                   (AR)               (reality)
Assay(Cr2O3),%                     ≥ 99.0  98.5 99 99.0 
Iron(Fe),%                                ≤ 0.03   0.05   0.03  
Chromic anhydride(CrO3),%   ≤ 0.005 0.05   0.005
Soluble,%                                 ≤ 0.1   0.3 0.3 0.1 
Chloride(Cl),%                          ≤ 0.005   0.01 0.01 0.005 
Sulfate(SO4),%                        ≤ 0.01  0.05 0.01 0.01 
(Al),%                                       ≤   0.005
(Ca),%                                      ≤   0.02
(Cu),%                                      ≤   0.002
(Fe),%                                       ≤   0.02
(Pb),%                                       ≤   0.01
(Mg),%                                      ≤   0.01
(K),%                                         ≤   0.03
(Na),%                                       ≤   0.3
granularity(≤ 40µm)   ≥95
99.95% metals basis:
Appearance                               Green Powder
X-Ray Diffraction                       Conforms to Structure
Purity                                           ≥99.95% Based on Trace Metals Impurities
ICP Major Analysis                  Confirms Chromium component
Total metallic impurities        ≤500ppm by ICP Atomic emission
Uses: mainly used for smelting metal chromium and chromium carbide. Used for enamel and ceramic glaze. Artificial leather, building material stain. Used in the manufacture of fast coating, abrasive material, green polishing paste printing money and special ink. Used for organic synthesis catalyst. Is advanced green pigment. They are also used as catalyst, analytical reagent. 
Packing: 25 kg/bag, plastic woven bag in outside. Export: 25 kg/cardboard barrels or according to customer requirement.
Storage: seal preservation.


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