Sodium Nitrite
ALTERNATIVE NAMES
Sodium Nitrite Salt
TECHNICAL SPECIFICATIONS
CAS
7632-00-0
EC
231-555-9
Food Code
E250
Sodium nitrite is a white to yellowish crystalline powder with formula NaNO2 and molecular weight 69.00 g/mol. Density 2.17 g/cm³, melting point 271°C, decomposes above 320°C; soluble in water (848 g/L at 25°C), hygroscopic with slight odor. Acts as both oxidant and reductant; produced by absorbing nitrogen oxides in sodium carbonate solution.
Sodium Nitrite
APPLICATIONS
Used in food curing as preservative, diazotization in dyes, corrosion inhibition, antidotes for cyanide, and in rubber accelerators.
SAFETY & RISKS
Toxic; forms carcinogenic nitrosamines, causing methemoglobinemia. Oxidizer; avoid acids and combustibles. Hazard Class 5.1/6.1 with PPE required.
PACKAGING
In 25kg bags or drums; store cool and dry; rinse for recycling or puncture packaging for landfill.
