Would 450ml water and 320ml of chemically pure nitric acid (relative density 1.40) was heated to 50 ℃, a bit is added 125g of granular zinc (or 160g of pure zinc oxide), the reaction: After completion of the reaction, the solution was left standing to clarify, filtered, concentrated by heating to a density of 1.61 zinc nitrate solution, stirring constantly cooled to 5 ~ 10 ℃, crystallization drying, sealed. To obtain superior grade pure, still using the above method zinc nitrate manufacturers, granular zinc to be used chemically pure, nitric acid to be used AR. After completion of the reaction to be heated about 3h, so that complete precipitation of Fe3 + ions experimental zinc nitrate, zinc oxide, or in addition to Fe3 + ions, acidified with nitric acid, and the Fe3 + ions in the test solution is checked, and then recrystallized. Recrystallization process to use a small amount of distilled water. Zinc nitrate at room temperature, steady state is zinc nitrate hexahydrate, Zn (NO3) 2 · 6H2O, in addition to a hydrate of Zn (NO3) 2 · H2O, dihydrate Zn (NO3) 2 · 2H2O, trihydrate Zn ( NO3) 2 · 3H2O, tetrahydrate Zn (NO3) 2 · 6H2O and nine hydrate Zn (NO3) 2 · 9H2O. zinc nitrate hexahydrate was heated to 105 ℃ begin dehydration, loss of six crystal water at 131 ℃ become free water and salt zinc nitrate, continue heating begins to decompose to release nitrogen dioxide. Soluble in water and ethanol, the solution is acidic (PH = 4). Deliquescent. Liberation of nitric oxide gas is heated division, first converted into basic salts of Zn (NO3) 2 · 3Zn (OH) 2, then forming a zinc oxide. Contact with organic matter can cause a fire and explosion. The release of nitric oxide gas during combustion, toxic! Zinc nitrate manufacturers | Shijiazhuang zinc nitrate | Shandong Jinan three levels provided by the three levels of chemical Chemical Company. Jinan three flat Chemical Co., Ltd. (www.sanpinghuagong.com) strong, credible, in Jinan, Shandong's bio-fertilizer industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead the three levels of chemical into the brilliant and you work for a better future!