magnesium sulfate anhydrous
|
moloecular formula: mgso4
molecular weight: 120.37
cas no:7487-88-9
standard: maximum assay of impurities is in %
| item |
analytically pure-ar
|
high pure
|
|
assay
|
≥99.0%
|
≥98.0%
|
|
water insoluble matter
|
≤0.005
|
≤0.01
|
|
free acid (h2so4)
|
≤0.05
|
——
|
|
chloride (cl)
|
≤0.002
|
≤0.002
|
|
phosphate (po4)
|
≤0.005
|
——
|
|
calcium (ca)
|
≤0.05
|
≤0.05
|
|
iron (fe)
|
≤0.001
|
≤0.001
|
|
arsenic (as)
|
≤0.0002
|
≤0.001
|
|
heavy metal (pb)
|
≤0.001
|
≤0.001
|
|
|
| 【back】 |