Chromium(III) nitrate nonahydrate
Name: Chromium(III) nitrate nonahydrate
CAS Number: 7789-02-8
Molecular formula: Cr(NOa)a·9H₂O
Molecular weight: 400.15
Packing: 25kg/bag
Descriptions
Properties: chromium nitrate is a purple-red deliquescent crystal that decomposes when heated to 125.5°C, with a melting point of 60°C. Easily soluble in water, soluble in ethanol, acetone and inorganic acids. Its aqueous solution turns green when heated, and quickly turns red-purple after cooling. It is corrosive and can cause burns. Contact with flammable materials can cause combustion.
Storage condition: Stored in a cool, ventilated warehouse.
Application: Used as a mordant and corrosion inhibitor for the production of chromium-containing catalysts, glass, ceramic glazes, printing and dyeing fabrics.
Specification
Test Items | Standard indicator (%) HG/T 3-936-76 | Test results(%) |
Cr(NO₃)₃ ·9H₂O≥ | 98 | 99 |
Cr≥ | 12.74 | 12.87 |
Ca≤ | 0.01 | 0.0002 |
SO₄ ≤ | 0.02 | 0.001 |
Cl≤ | 0.01 | 0.002 |
Na≤ | 0.1 | 0.00017 |
K≤ | 0.1 | 0.003 |
Fe≤ | 0.01 | 0.003 |
Al≤ | 0.05 | 0.004 |
water-insoluble | 0.02 | 0.002 |