Sodium nitrite is a white to yellowish crystalline powder that is very soluble in water . It has a variety of uses, including:
Food additive: Sodium nitrite is a common food additive used in processed meats such as bacon, ham, hot dogs, and salami. It helps to preserve the meat, prevent the growth of bacteria, and give it a characteristic pink color .
Industrial applications: Sodium nitrite is also used in a variety of industrial applications, such as the production of dyes, rubber, and pharmaceuticals.
Metal treatment: It is used in metal treatment and finishing to prevent corrosion.
Antidote: In medicine, sodium nitrite is used as an antidote to cyanide poisoning.