magnesium sulfate heptahydrate
magnesium sulfate heptahydrate

Magnesium sulfate powder

  • Reference Standard:GB 32449-2015
  • Molecular formula:MgSO4·nH2O,n=1/n=7
  • Appearance:Magnesium Sulfate heptahydrate is colorless crystal, and magnesium sulfate monohydrate is white powder
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Physical and Chemical indicator:

 Item

Indicator

MgSO4·7H2O

MgSO4·H2O

MgSO4·H2O

Magnesium sulfate

≥98.4  

≥85.5

≥91.2

Total arsenic (subject to As),%

≥9.7

≥15.0

≥16.0

Arsenic (As),mg/kg

≤2

Pb (subject to Pb),  mg / kg

≤3

Cd(subject to Cd),mg/kg     

≤1

Hg(subject to Hg),mg/kg  

≤0.1

Fineness

W=900μm≥95%

W=400μm≥95%

W=400μm≥95%

Water content

-

≤3%

≤3%

 

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