Sodium dichromate technical

CAS №

10588-01-9

ГОСТ

GOST 2651-78

Формула

Na2Cr2O7

Фасовка

25 kg

available

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Description

Application

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.

Packing

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.

Physical and chemical properties

Item	Norm
Item	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	98.9 75.5	98.2 75.0
Mass fraction of sulfate in terms of SO₄^2-, %, 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

Safety requirements

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.