SODIUM NITRATE, TECHNICAL, CRYSTALLINE NaNO3 (GOST 828-77)

Technical sodium nitrate is produced in two grades depending on application: A grade is used in preparation of fluxes for metal welding/soldering; in production of reagents, pyrotechnic mixtures, optical glass, crystal glass and in production processes in which content of oxidizable substances as NaNo2 is strictly limited. B grade is used in metal etching, melting lump waste tungsten, technical glass fining and in retail sale.

SPECIFICATION

Description

Standard

A

B

1. Appearance White clear crystals slightly grayish or yellowish White clear crystals slightly grayish or yellowish
2. Content of sodium nitrate as dry Matter, %, min 99,8 99,5
3. Water content, %, max 0,5 0,5
4. Content of substances insoluble in water, %, max 0,03 0,03
5. Content of chlorine compounds as NaCl, %, max 0,15 0,3
6. Content of oxidizable substances as NaNO2 , %, max 0,010 0,2
7. Content of Fe as Fe2O3, %, max 0,001 -
8. Content of chrome as Cr2O3 , %, max 0,0001 -

Attention! Sodium nitrate is toxic. When getting into human body it may cause formation of methemoglobin in blood. It is not combustible. Being an oxidizer, it promotes self-ignition of combustibles. In case of fire use OXP-10 or OBP-10 fire extinguishers and abundant amount of water. Packing: in 5-, 6-layer bituminized or 5-layer paper laminated bags, 5-layer paper unimpregnated bags with PE liners. Transportation: by all means of conveyance except by air transport, in covered conveyances in accordance with existing rules for hazardous cargo carriage. Storage life: unlimited.


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