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Sodium nitrite

Product Name: Sodium nitrite

CAS No.: 7632-00-0

EINECS No.: 231-555-9

Molecular formula: NNaO2

Molecular weight: 69

Uses: Mainly used as raw materials for manufacturing base compounds, azo dyes, etc.; used as mordant and bleaching agent for fabric dyeing; metal heat treatment agent; cement early strength agent, antifreeze, etc. Mainly used in the pharmaceutical and chemical industries. Sodium nitrite is not only an antifreeze chemical admixture for early-strength cement concrete, but also a catalyst for the hydration and hardening of early-strength cement.

Sodium nitrite is also a corrosion inhibitor for metals. After the surface of the metal is dipped with sodium nitrite solution, it can be corrosion-inhibited for about half a year. Sodium nitrite is often used as a rust inhibitor for castings.

Quality Index: GB/T 2367-2016

Main Index name Top grade First grade Qualified product
Sodium nitrite content (calculated on a dry basis),% ≥ 99.0 98.5 98.0
Moisture,% ≤ 1.4 2.0 2.5
Chloride (calculated) content,% ≤ 0.10 0.17 -
Water insoluble matter content (calculated on a dry basis),% ≤ 0.05 0.06 0.10
The content of nitric acid (calculated on a dry basis),% ≤ 0.80 1.00 1.90
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