Zinc Sulfate Heptahydrate
Zinc Sulfate Heptahydrate occurs in nature as the mineral goslarite.
Application
Zinc sulfate is used in various manufacturing processes, such as calico printing, wood preservation, the production of lithopone, and the bleaching of paper. A study of the abscissic acid transduction cascade in Arabidopsis thaliana has used zinc sulfate as an anion channel blocker. The use of zinc sulfate to investigate the internal speciation of zinc in the roots and leaves of Phaseolus vulgaris has been described.
Technical Specification
Product Description
Molecular Formula: ZnSO4 · 7H2O
Molecular Weight: 287.5
CAS Number: 7446-20-0
Melting Point: 100 °C
|
Test |
Specification | Result |
|
Appearance (Color) |
White | White |
|
Appearance (Form) |
Crystals or Crystals with Chunks | Crystals |
|
Complexometric EDTA |
99.0 - 103.0 % | 99.2 % |
|
X-Ray Diffraction |
Conforms to Structure | Conforms |
|
Insoluble Matter c = 10%, Water |
_ 0.01 % | 0.01 % |
| Calcium (Ca) | _ 0.005 % | 0.001 % |
| Chloride (Cl) | _ 5 ppm | 5 ppm |
| Iron (Fe) | _ 0.001 % | 0.001 % |
| Potassium (K) | _ 0.01 % | 0.01 % |
| Magnesium (Mg) | _ 0.005 % | 0.001 % |
| Sodium (Na) | _ 0.05 % | 0.01 % |
| Ammonia (NH4) | _ 0.001 % | 0.001 % |
| Nitrate (NO3) | _ 0.002 % | 0.002 % |
| Lead (Pb) | 0.003 % | 0.001 % |
| Manganese (Mn) | 3 ppm | 1 ppm |
|
pH c = 5%; Water at 25°C |
4.4 - 6.0 | 4.7 |
| Meets ACS Requirements | Current ACS Specification | Conforms |