What are the uses of sodium nitrite

What are the uses of sodium nitrite

Sodium nitrite is easily soluble in water and soluble in methanol, etc. It can be used as a mordant for fabric dyeing. Some silks, silks, and linens use sodium nitrite as a bleaching agent and can act as a corrosion inhibitor for steel. Sodium nitrite is also used as a coloring agent and preservative in the processing of meat products. Because sodium nitrite exhibits an alkaline reaction and reacts with oxygen in the air, it can be used to prevent corrosion of steel plates.

The pharmacology of sodium nitrite: can make hemoglobin into methemoglobin, and the detoxification process of cyanide is related to methylene blue, but the effect is stronger than methylene blue. It is suitable for the rescue of cyanide poisoning.

The nature and use of sodium nitrite: white or light yellow rhombic crystals, easily soluble in water and liquid ammonia, slightly soluble in methanol, ethanol, ether, strong hygroscopicity, mordant used for fabric dyeing; silk, linen Bleaching agent, metal heat treatment agent; steel corrosion inhibitor; antidote for cyanide poisoning, laboratory analysis reagent, used as coloring agent, antimicrobial agent, preservative in the processing of meat products.

Sodium nitrite is an important azo reagent, and its azo reaction with aromatic amines is one of the most commonly used reactions in the dye industry

The oxidation of sodium nitrite and concentrated alkali forms a dense, ink-colored iron tetroxide film on the surface of iron and steel products such as firearms, bicycle chains, blades, and machine parts.

Sodium nitrite is a reducing agent, with the chemical formula NaNO2, which becomes NaNO3 after being oxidized, mainly to remove oxygen in water and other small amounts of oxidants in water.

Spraying 10% -20% can add 0.5% anhydrous sodium carbonate first. If it is better to add some glycerin and triethanolamine, use sodium nitrite as little as possible. The anti-rust effect is very good, but nitrite can cause cancer.