сульфат цинка гептагидрата Сельское хозяйство Оценка

Molecular formulaZnSO4 7H2O Molecular weight 287.56 Physical and chemical property White or slight-yellow crystal, loose and no agglomeration, easy soluble in water and slightly dissolvable in alcohol and glycerol, insoluble in liquid ammonia and ketone, tending to lose water molecules of hydration in dry air and become white powder appearance. When the temperature is 280, it will become no water substance and lose all crystal water. When the temperature is above 500, it will decompose. Relatively density: 1.975 Melting point: 100 Use As a kind of microelement, it is widely used in rice, wheat, corn, vegetable and fruit. It is also used by mixing with other multiplex fertilizer and prevent fruit tree against diseases. Characteristic and function Easy solubie in water, quick absorbable for the plant. Low content of heavy metal, FeCdCrAs meet with China Agricaltured Standard. Packaging and transportation Plastic woven bag lined with plastic film bag. Standard net weight: 25kg or as customers requirement. Avoid moisture during transportation and store. ITEM INDEXTypePremium GradeGrade IZn %22.5122.28ZnSO4 7H2O %9998Water insoluble%0.0200.060Pb%0.0010.002Cd %0.0010.002Cr %0.00050.001