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Shaanxi Shangnan Dongzheng Chemical Co., Ltd.

35 YRS

Shaanxi, China

CNY 15 Million

33300 m²

100-500 people

Main Products: Chromic Chloride Hexahydrate / Chromic Acetate / Chromium Formate / Basic Chromic Sulfate / Chromium Potassium Sulfate Dodecahydrate / Chromic Nitrate Nonahydrate / Dichromium Trioxide / Potassium Dichromate / Sodium Dichromate / Sodium Dichromate Dihydrate

Shaanxi, China

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Dichromium Trioxide / CAS 1308-38-9

OVERVIEW

Packaging

25 KG/Woven Bag

Lead Time

14-30 days

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DESCRIPTION

Dichromium Trioxide

【 Molecular formula 】 Cr₂O₃

【 Molecular weight】 151.99

【 CAS NO.】1308-38-9

【 Character 】 Bright green to dark green. Density: 5.21 Melting point: 2266 degrees. Boiling point: 4000 degrees. It has metallic luster, magnetism, strong covering power, high temperature resistance, sunlight resistance, insoluble in water and insoluble in acid. It is relatively stable in the atmosphere, has no effect on the general concentration of acid, alkali and sulfur dioxide gas, and has excellent outstanding pigment quality and fastness.

【 Use 】It is used for smelting metal chromium and chromium carbide, coating, enamel, ceramics, glass, artificial leather, water-resistant materials, coloring of building materials, catalyst for organic synthesis, special ink for manufacturing Sun resistant materials and printing banknotes, metal polishing and grinding materials, metal surface chromizing, magnetic materials, rubber, art pigments, camouflage coatings, etc.

【 Package】25kg plastic inner bag and reinforced woven bag outer package.

【 Notes 】It shall be stored in a dry place to prevent moisture, acid fog and sun exposure. It shall be stored separately from food.

【 Level 】 1 Refractory; 2. Pigment grade; 3. Grinding grade

【 Executive criteria】 GB T20785-2006

Indicator names	Superior quality	First Grade
% Chromium trioxide (in Cr2O3)	≥99.0	99
% Water-soluble chromium Cr6 +	≤0.005	0.03
Water content	≤0.15	0.15
Hydrotrope	≤0.1	0.3
PH	6-8	5-8
Oil absorbency (g / 100 g)	15-25	15-25
Screening residue (0.045 mm test sieve%)	≤0.1	0.2
Relative coloration and chromatic light	User consultation	User consultation

Typical Properties

Lead chromium green is a major coloring pigment of the paint industry, and the vast majority of green lacquers are formulated with this pigment. In addition, it is used in paints and plastics. Its application range is very similar to that of lead chrome yellow. Because there is chromic yellow in the composition, take care of its lead containing toxicity when applied. Lead chrome green contains iron blue and contains the oxidant lead chromate, so when dust encounters Mars with the possibility of autoignition, it is not prudent to dry, pulverize. The burnt lead chrome green completely loses the characteristics of a green pigment, transforming into a dark brownish yellow substance. In addition, while fabricating nitro paint, the rolling process did not directly roll with lead chromium green, whereas the process that was rolled after finishing with lead chromium green to prevent combustion while rolling the sheets.

CAS No.

1308-38-9

Formula

Cr2O3

Molecular Mass

151.99000

Exact Mass

151.86600

PSA

0.00000

Logp

-0.35640

IUPAC

oxo(oxochromiooxy)chromium

SMILES

O=[Cr]O[Cr]=O

Matter Classification

inorganic

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