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Langfang Tianke Biotechnology Co., Ltd.
Langfang Tianke Biotechnology
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Zinc sulphate

Zinc sulphate

Molecular formula: ZnSO4·7H2O
Molecular weight: 287.54
CAS NO:7733-02-0
Properties: colorless crystal. Relative density is 1.957. Easily soluble in water, insoluble in ethyl alcohol.
Uses: analytical reagent, mordant, electronic component production and pharmaceutical industry.
Standard: maximum assay of impurities is in 百分比

Specification/item

Analytically pure-AR

Chemically pure-CP

High pure

Assay

≥99.5

≥99.0

≥99

Clarity test

Qualified

Qualified

PH value

4.4-6.0

4.4-6.0

4.4-6.0

Water insoluble matter

≤0.01

≤0.01

≤0.02

Chloride (Cl)

≤0.0005

≤0.002

≤0.05

Total nitrogen (N)

≤0.001

≤0.002

≤0.05

Arsenic (As)

≤0.00005

≤0.0002

≤0.0002

Manganese (Mn)

≤0.0003

≤0.001

-

Iron (Fe)

≤0.0005

≤0.002

≤0.002

Copper (Cu)

≤0.001

≤0.005

-

Cadmium (Cd)

≤0.0005

≤0.002

-

Lead (Pb)

≤0.001

≤0.01

≤0.01

Non-sludging to ammonium sulfide (as sulfate)

≤0.05

≤0.02

≤0.05

Packing: woven bag lined with plastic bag, kraft paper bag, or fiber drum, net weight is 25kg.

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Langfang Tianke Biotechnology Co., Ltd.
Add: Sanghang Industrial Park, Dacheng County,
Hebei, China
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