Sodium Nitrite

Preparation of Sodium Nitrite:

• Produced by reacting nitrous acid with sodium hydroxide or sodium carbonate: HNO2+NaOH→NaNO2+H2O

Properties of Sodium Nitrite:

• White or slightly yellowish crystalline powder.
• Soluble in water.
• Acts as a strong oxidizer and can be corrosive.

Uses

1. Antidote for Cyanide Poisoning: Used in combination with sodium thiosulfate.
2. Food Preservative: Especially in cured meats.
3. Industrial Use: Used in the production of dyes and rubber chemicals.

Storage

• Store in a cool, dry place, away from heat, moisture, and incompatible materials such as acids and reducing agents.
• Keep in a tightly closed container.

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