Stock Code:002562
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Sodium Dichromate Dihydrate Crystals

Molecular Formula: Na2Cr2O7·2H2O

Molecular Mass: M=298.00

CAS No.: 7789-12-0


产品1 红矾钠结构式.jpg

Appearance
Red-orange crystals
Shelf Life
At least 2 years in original packaging
Packaging
Sealed bulk-bag, 950kg/bag or 1050 kg/bag. Flat Bottom or Bottom spout

Introduction:

• Intermediate for all kinds of chrome chemicals with red-orange crystals, weak hygroscopicity, melting point of 356.7 ℃ and density of 2.348 g/cm3. Starts loosing crystal water above 100 ℃ and decomposing over 400 ℃. Dissolves excellent solubility in water.

• Widely used in manufacturing of Basic Chromium Sulfate, Lead Chromate Yellow Pigment, Chromium Oxide Green, Chromium Trioxide, Pharmaceutical Catalyst, Oxidizer and other chromate salts.

• When compared with conventional sulfuric acid acidification process, it has low sulfate concentrations because of our efficient Carbon Dioxide acidification process. Table below illustrates the specification of Sodium Dichromate Dihydrate crystals.

 

Technical Data:

Component

Content

Unit%

Sodium Dichromate   Crystals / Na2Cr2O7·2H2O

99.50-101.50

%

Chromium Trioxide / CrO3

66.80-68.10

%

Sulfate / SO42-

Max. 0.2

%

Chloride / CI-

Max. 0.1

%

Vanadium / V

Max. 100

mg/kg

Ferro / Fe

Max. 20

Mg/kg

Insolubles

Max. 0.01

%

 


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