Chemical formula: NaNO₂
Chemical formula: NaNO₂
Chemical formula: NaNO₂
Application
In the synthetic process of certain azo dyes, it participates in the diazotization reaction and is an important reagent for the preparation of diazo salt.
It reacts with specific compounds to produce specific colors for color detection and analysis in printing and dyeing.
In some printing and dyeing processes, it is used as an auxiliary to improve the printing and dyeing effect, such as enhancing the permeability of dyes and improving the dyeing fastness.
Specification
| ITEM | SPECIFICATION | TEST RESULT |
| SODIUM NITRITE : | 99.0% MIN | 99.04% |
| MOISTURE : | 1.4% MAX | 1.2% |
| SODIUM NITRATE : | 0.80% MAX | 0.67% |
| CHLORIDE (AS NACL) : | 0.10% MAX | 0.08% |
| WATER INSOLUBLE : | 0.05% MAX | 0.02% |
| CONTENT OF IRON(Fe): | 0.005%MAX | ——- |
| APPERANCE OF PRODUCT | WHITE OR LIGHT YELLOW FINE CRYSTAL | |
