Ningxia Dongcang Chemical New Energy Technology Co., Ltd.

Chemical property

Alpha type containing 6 crystallization water molecules are blue-green sifang crystallization, change in 53 to the beta type green transparent crystal.Stable at 40 , at room temperature become opaque blue crystals.Contains 7 crystalline water for emerald green transparent crystal.It's sweet and astringent.Slightly weathering.About 100 lost 5 crystallization water molecules become monohydrate, into a yellow-green anhydride in 280 .Half of the lethal dose (rats, abdominal cavity) 500mg/kg.There's the possibility of cancer.Nickel sulfate [3] has no water, six water, and seven water, mainly six water.Anhydrous is yellow-green crystal with a relative density of 3.68.Soluble in water, insoluble in ethanol, ether.31.5 ~ 53.3 crystallization of nickel sulfate, six water. Water is blue or green fine crystal, relative density 2.07.Soluble in water, aqueous solution is acidic.It is easy to be soluble in strong ammonia (producing nickel ammonia ion), but in organic solvents, solubility is very small (the disease of sulfate, the lattice can be too large).280 lose crystal water, 280 starts to break down, releasing sulphur trioxide, nickel oxide.Less than 31.5 crystallization of seven water nickel sulfate, seven water content for the green transparent crystal, taste sweet, acerbity, a little easy to weathering, relative density 1.948.The melting point of 98 ~ 100 .103 lost six water of crystallization.Soluble in water and ethanol, easy to dissolve.Nickel sulfuric contact with dust and organic matter, can sometimes cause combustion or explosion.The maximum allowable concentration in air is 0.5 mg/m3.