Sodium nitrate, melting point is 306.8 ℃, the density of 306.8 g/cm3 (20 ℃), colorless transparent or white microstrip yellow diamond crystals. Its bitter taste salty, soluble in water and liquid ammonia, slightly soluble in glycerin and ethanol, easy deliquescence, especially in very small amounts of sodium chloride impurities, sodium nitrate deliquescence is greatly increased. When dissolved in water when its solution temperature is reduced, the solution is neutral. When heated, sodium nitrate easily decomposed into sodium nitrite and oxygen. Sodium nitrate can be fuel, it should be stored in a cool, ventilated place. With oxidation, in company with organic friction or collision can cause burns or explosion. Stimulating, toxicity is small, but have a harm to human body.
Enamel is used as fluxing agent, oxidant and to make the enamel powder materials. Used for all kinds of glass glass industry and products of decoloring agent, defoamer, clarifying agent and the oxidation of flux. Inorganic industry as decoloring agent for molten caustic soda and used in the manufacture of other nitrates. Send lubricious agent used in meat processing, food industry can prevent meat metamorphism, and flavoring. Used as a fertilizer industry for acidic soil organic fertilizer, especially for root crops, such as beet, carrot, etc. Dyestuff industry used as production picric acid and raw materials. Metallurgical industry used as steel, aluminum alloy heat treatment. City industrial machine used for metal cleaning agent and preparation ferrous blue agent. Pharmaceutical industry used as a medium of penicillin. Fuel used for tobacco cigarette industry. Used as chemical reagents in analytical chemistry. In addition, also used in the production of explosives and so on.
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