The hazards of sodium nitrite

There are many common items in life. When choosing some of them, you also need to have a good understanding of them so that they can be used correctly. Different items are used in different ways and have different effects. Sodium nitrite is not very common and is widely used. What are the hazards of sodium nitrite?

Many people are not very clear about the harm of sodium nitrite, so when choosing it, they must first have a good understanding of it, so as to avoid damage to their health and provide good protection for their bodies.

Hazards of sodium nitrite:

harm

Because of its salty taste and low price, it is often used as an unreasonable substitute for table salt in illegal food production. Because sodium nitrite is toxic, foods containing industrial salt are very harmful to the human body.

Hazard Category

Health hazards: The toxic effects are paralysis of the vasomotor center, respiratory center and peripheral blood vessels; and formation of methemoglobin. Symptoms of acute poisoning include general weakness, headache, dizziness, nausea, vomiting, diarrhea, chest tightness and difficulty breathing; examination reveals obvious cyanosis of the skin and mucous membranes. In severe cases, blood pressure drops, coma occurs, and death occurs. Contact with the skin of workers' hands and feet may cause damage.

Characteristics

White to light yellow granules, sticks or powder. It is hygroscopic. Decomposes when heated to above 320℃. It slowly oxidizes to sodium nitrate in the air. It decomposes in contact with weak acid and releases brown nitrogen trioxide gas. Soluble in 1.5 parts of cold water, 0.6 parts of boiling water, slightly soluble in ethanol. The aqueous solution is alkaline, with a pH of about 9. Relative density 2.17. Melting point 271℃. It is oxidizing and can burn and explode when in contact with organic matter, and emit toxic and irritating nitrogen peroxide and nitrogen oxide gases. Moderately toxic, median lethal dose (rat, oral) 180 mg/kg.

store

Store tightly closed in a cool, dry place.

use

Chromatography. Spot analysis is used to determine mercury, potassium and chlorate. Diazotizing reagent. Nitrosating reagents. Soil analysis. Serum bilirubin is measured during liver function tests.

Safety measures

Store in a cool and dry place, away from fire and heat sources. Avoid storage and transportation with edible chemicals, reducing agents, metal powders, etc. Pay attention to personal protection and prohibit direct contact with the body. Fire extinguishing: mist water, sand and soil

The above is a detailed introduction to the hazards of sodium nitrite. When using it, you must follow the regulations, and such things are generally difficult to purchase. At the same time, when choosing it, you must also be careful not to take it directly with your hands, as this will cause harm to your body. This is also something you should pay attention to.