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Sodium dichromate technical

CAS №10588-01-9 ГОСТGOST 2651-78
ФормулаNa2Cr2O7 Сорт
СинонимыSodium dichromate, sodium dichromate, sodium bichromate Фасовка25 kg


Sodium dichromate technical is used in the leather, textile, chemical industry, inorganic pigments, catalysts, and other industries.

Safety requirements

Sodium dichromate technical is fire-and explosion-proof, the degree of impact on the body is a substance of Class 1 dangerous.


Sodium dichromate is packed in steel drums of chemicals, polyethylene liners are attached to the four-, five-layer paper bags or flax-jute-kenafnye bags or jute bags. Net weight of the bag — no more than 50 kg.

Permitted by agreement with the consumer it can be packaged in special soft disposable containers.

Guaranteed shelf life

Shelf life is unlimited.


Item Norm
Top First
Appearance Non-caking crystals from light orange to dark red
Mass fraction of sodium dichromate
(Na2Cr2O7), %, not less
in terms of chromic anhydride (CrO3), %, not less


Mass fraction of sulfate in terms of SO42-, %, not less 0.1 0.2
Mass fraction of chlorides as Cl-, %, not more 0.2 0.4
Insoluble in water, %, not more 0.01 0.02
Total iron (Fe2+), %, not more 0.001 0.003
The aqueous solution Not less than 3.5
Class of danger 1
Basic properties and hazards
Basic properties Non-caking crystals from light orange to dark red. Non-volatile, water-soluble. Strong oxidant. Pollutes water.
Explosion and fire Non-Flammable. Fire-and explosion-proof.
When heated, decomposes to oxygen, contributing to the emergence of both combustion and rapid development of the fire.
The risk to humans Aerosol and dust hexavalent chromium compounds entering the body can cause severe poisoning. By prolonged exposure to hexavalent chromium compounds have a general toxic effect, causing respiratory diseases, gastrointestinal tract and skin. Hexavalent chromium compounds are irritating to the skin and mucous membranes of the eyes and nose. Skin hexavalent chromium compounds leads to the formation of difficult healing ulcers.
Chemical burn. In case of fire and explosions can lead to burns and injuries.
Individual protection means Insulating protective clothing FIR 5 complete with an insulating mask IP-4M. In case of fire — fire resistant suit, complete with self-rescuers SPI-20.
At low concentrations in the air (with an increase in MPC 100 times) — overalls, industrial gas mask. Maslobenzo-resistant gloves, shoes.
Respirator type SB-1 "petal" and Y-2K, goggles, clothing, footwear, hand protection.