农业用硝酸钾危险类别浅析

Analysis on hazard class of potassium nitrate for agricultural use

农业用硝酸钾含有钙、镁、硫酸盐、氯化物及水分等多种杂质,是多组分复盐与固溶体,与单体硝酸钾在理化性质方面有所不同。实验结果表明,农业用硝酸钾在大于1 000℃时仍不能燃烧,属于不可燃物质。农业用硝酸钾与其他还原剂的化学反应十分缓慢,不会发生快速的链式反应,也不会因撞击引起爆炸,并且对人体和环境也没有危害,使用过程中安全稳定,因此农业用硝酸钾应定性为非危险品。

The composition of potassium nitrate for agricultural use is different from that of monomer potassium nitrate on physical and chemical properties.Potassium nitrate for agricultural use actually contains calcium, magnesium, sulfate, chlo- ride, moisture, and a variety of impurities and is a multicomponent double salt and solid solution.Experiment results showed that potassium nitrate for agricultural use still cannot burn when ignition point was above 1 000 ℃, so it is noncombustible material itself.The potassium nitrate for agricultural use can react chemically with other reductive agents slowly,no rapid chain reaction will occur and no explosion will happen, so the potassium nitrate for agricultural use is very secure and stable. Furthermore, it has no risk for the human body and the environment. Therefore, the potassium nitrate for agricultural use should be characterized as non-dangerous goods.