Magnesium sulfate heptahydrate 10034-99-8


Product Deail


Magnesium sulfate heptahydrate

Another name】Magnesium sulfate;Bitter salt;Magnesium sulfate crystalline.

Description】White crystalline, salty, relative density 1.67, weathering in dry air. Loss of 1 molecule of water of crystal at room temperature, loss of 4 molecules of water of crystal at 70-80℃, loss of 5 molecules of water of crystal at 100℃, loss of 6 molecules of water of crystal at 120℃, 250℃ becomes anhydrous. Melting point 1124℃(anhydrous). Soluble in water, soluble in glycerin, slightly soluble in ethanol and glycerin, insoluble in acetone.

Test item

GR

AR

CP

Other

Assay(MgSO4•7H2O) /%

≥99.5

≥99.0

≥99.0

Custom

pH(50g/L,25℃)

5.0-8.0

5.0-8.0

5.0-8.0

Clarity of solution

Passes test

Passes test Passes test

Water insoluble /%

≤0.002

≤0.005

≤0.01

Chloride(Cl) /%

≤0.000 2

≤0.000 5

≤0.001

Nitrate(NO3) /%

≤0.002

-

-

Ammonium(NH4) /%

≤0.002

-

-

Arsenic(As) /%

≤0.000 05

≤0.000 1

≤0.000 2

Sodium(Na) /%

≤0.005

≤0.005

≤0.05

Potassium(K) /%

≤0.005

-

-

Calcium(Ca) /%

≤0.01

≤0.02

≤0.05

Manganese(Mn) /%

≤0.000 5

≤0.001

≤0.005

Iron(Fe) /%

≤0.000 2

≤0.000 5

≤0.001

Strontium(Sr) /%

≤0.005

-

-

Heavy metal(as Pb) /%

≤0.000 2

≤0.000 5

≤0.001

Use】Used as an analytical reagent, such as a precipitator for sulphates; Also used in medicine, printing and dyeing, paper making, ceramics and leather industry; Used for building materials to make magnesium sulfide cement; Magnesium deficiency soil ameliorated by high-end fertilizer; Magnesium supplements in feed processing.