Four water was colorless transparent monoclinic crystals, α- and β- type two. Density: α- type 1.896 Shandong calcium nitrate, β- type 1.82. Melting point: 42.7 ℃ type calcium nitrate cheap α-, β- type 39.7 ℃. Decomposition at 132 ℃. Monohydrate granular substance, melting point of about 560 ℃. Anhydrous is a white solid, 2.36 density calcium nitrate content, m.p. 561 ℃. Deliquescence in the air. When burning decomposed into calcium oxide. Dissolved in water, ethanol and acetone. Health Hazards: pathways: inhaled, ingested, percutaneous absorption. Inhalation of dust on the nose, throat and respiratory tract irritation, coughing and chest discomfort. Eye irritation. Prolonged and repeated exposure to dust is irritating to the skin. Acute toxicity: LD503900mg / kg (rat oral) hazardous characteristics: strong oxidants. Heating decomposition and emit oxygen. Mixed with organic matter, reducing agents, combustibles such as sulfur, phosphorus or metal powders can form explosive mixtures. Combustion decomposition and emit toxic nitrogen oxides. By heat decomposition, produce toxic nitrogen oxides. Combustion (decomposition) products: nitrogen oxides. Laboratory monitoring methods: acid phenol two spectrophotometry (GB7480-87, Water) (nitrate) ion chromatography (GB13580.5-92, Water) (nitrate) ACCIDENTAL: Isolation leak contaminated areas, restricting access . Recommended emergency personnel wearing self-absorption filter respirators, wearing overalls general operations. Do not direct contact with leakage. Rendering leakage in contact with organic matter, reducing agents, flammable or metal powder. A small leak: rinse with plenty of water, wash water diluted into the wastewater system. Large Leak: covered with plastic sheeting, canvas and reduce dispersion. Then collect recycling or shipped to the waste disposal sites. Calcium nitrate, calcium nitrate use, three-level chemical quality assurance (certified merchants) are provided by Chemical Co., Ltd. Jinan three levels. Jinan three ping Chemical Co. (www.sanpinghuagong.com) is specialized in "calcium nitrate, magnesium nitrate, zinc nitrate, magnesium sulfate, calcium sulfate, barium sulfate, ferrous sulfate," the enterprise, the company adhering to the "honesty, hard service "concept, to provide you with the highest quality products and services. Welcome to inquire! Contact: Su Jingli.