Keyestudio
Sodium Nitrate 97% 1kg
Sodium Nitrate 97% 1kg
Sodium Nitrate 97% 1kg is an inorganic compound with the chemical formula NaNO3. It is a white to slightly yellowish crystalline powder that is very soluble in water and is hygroscopic. From an industrial perspective, it is the most important nitrite salt. It is a precursor to a variety of organic compounds, such as pharmaceuticals, dyes, and pesticides, but it is probably best known as a food additive used in processed meats and (in some countries) in fish products.
Production
Industrial production of sodium nitrite follows one of two processes, the reduction of nitrate salts, or the oxidation of lower nitrogen oxides. One method uses molten sodium nitrate as the salt, and lead which is oxidized, while a more modern method uses scrap iron filings to reduce the nitrate.
A more commonly used method involves the general reaction of nitrogen oxides in alkaline aqueous solution, with the addition of a catalyst. The exact conditions depend on which nitrogen oxides are used, and what the oxidant is, as the conditions need to be carefully controlled to avoid over oxidation of the nitrogen atom. Sodium nitrite has also been produced by reduction of nitrate salts by exposure to heat, light, ionizing radiation, metals, hydrogen, and electrolytic reduction.
Toxicity
Sodium nitrite is toxic. The LD50 in rats is 180 mg/kg and in human LDLo is 71 mg/kg. Yet, death by sodium nitrite ingestion can happen at lower dose. Sodium nitrite is sometimes used for homicide. The online marketplace eBay has globally prohibited the sale of sodium nitrite since 2019. To prevent accidental intoxication, sodium nitrite (blended with salt) sold as a food additive in the US is dyed bright pink to avoid mistaking it for plain salt or sugar. In other countries, nitrited curing salt is not dyed but is strictly regulated.
Medication
Sodium Nitrate 97% 1kg is used as a medication together with sodium thiosulfate to treat cyanide poisoning. It is recommended only in severe cases of cyanide poisoning. In those who have both cyanide poisoning and carbon monoxide poisoning sodium thiosulfate by itself is usually recommended. It is given by slow injection into a vein.
Side effects can include low blood pressure, headache, shortness of breath, loss of consciousness, and vomiting. Greater care should be taken in people with underlying heart disease. The patient’s levels of methemoglobin should be regularly checked during treatment. While not well studied during pregnancy, there is some evidence of potential harm to the baby. Sodium nitrite is believed to work by creating methemoglobin that then binds with cyanide and thus removes it from the mitochondria.
Sodium nitrite came into medical use in the 1920s and 1930s. It is on the World Health Organization’s List of Essential Medicines.