硝酸钠是一种无机物质，化学式为NaNO3。分子量84.99。吸湿无色透明三角形晶体。加热到380℃时分解。它非常溶于水和液氨，溶于甲醇和乙醇，较溶于丙酮，微溶于甘油。当溶解在水中时，它吸收热量，溶液变冷，水溶液呈中性。它是从工业碱溶液中吸收氮氧化物，蒸发结晶而成。用于制造硝酸和亚硝酸钠，用作玻璃、火柴、搪瓷或陶瓷工业的配料，硫酸工业的肥料、催化剂等。
Sodium nitrate is an inorganic substance with the chemical formula of NaNO3. Molecular weight 84.99. Hygroscopic colorless transparent triangular crystal. Decompose when heated to 380 ℃. It is very soluble in water and liquid ammonia, soluble in methanol and ethanol, more soluble in acetone and slightly soluble in glycerol. When dissolved in water, it absorbs heat, the solution becomes cold, and the aqueous solution is neutral. It is formed by absorbing nitrogen oxides from industrial alkali solution and evaporation crystallization. It is used for manufacturing nitric acid and sodium nitrite, as ingredients in glass, match, enamel or ceramic industry, fertilizer and catalyst in sulfuric acid industry, etc.
操作注意事项
Precautions for operation
对于密闭操作和加强通风，操作人员要接受专门培训，并严格遵守操作规程。建议操作人员穿戴自吸过滤器防尘口、化学防护眼镜、聚乙烯防毒服和氯丁橡胶手套。远离火种和热源。工作场所严禁吸烟。远离易燃物和可燃物。避免产生灰尘。避免接触还原剂、活性金属粉末和酸。搬运过程中，应小心装卸，以防损坏包装和容器。提供相应品种和数量的消防设备和泄漏应急处理设备。空容器可能会留下有害物质。

For closed operation and enhanced ventilation, operators shall receive special training and strictly abide by the operating procedures. It is recommended that operators wear self-priming filter dust port, chemical protective glasses, polyethylene anti-virus clothing and neoprene gloves. Keep away from fire and heat sources. Smoking is strictly prohibited in the workplace. Keep away from combustibles and combustibles. Avoid dust generation. Avoid contact with reducing agents, active metal powders and acids. During handling, handle with care to prevent damage to packaging and containers. Provide corresponding varieties and quantities of fire-fighting equipment and leakage emergency treatment equipment. Empty containers may leave harmful substances.
储存注意事项
Storage precautions
储存在阴凉通风的仓库中。远离火种和热源。贮存温度不超过30℃，相对湿度不超过80%。应与还原剂、活性金属粉末、酸、可燃物等分开存放，不得同时存放。储存区域应提供适当的材料，以防止泄漏。
Store in a cool and ventilated warehouse. Keep away from fire and heat sources. The storage temperature shall not exceed 30 ℃, and the relative humidity shall not exceed 80%. It shall be stored separately from reducing agent, active metal powder, acid, combustibles, etc., and shall not be stored at the same time. Suitable materials shall be provided in the storage area to prevent leakage.