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ferrous sulfate

molecular formula: feso4·7h2o  
molecular weight: 278.05
cas no:7782-63-0
properties: sky blue or green monoclinic crystal or crystalline powder. relative density is 1.8987, melting point is 64℃. soluble in water and glycerin, insoluble in alcohol.
uses: as analytical reagent, water purifier, gas purification agent, mordant, herbicide, and etc.
standard: maximum assay of impurities is in %

item

analytically pure-ar

chemically pure-cp

high pure

assay

≥99.0

≥98.0

98.5-104

water insoluble matter

≤0.005

≤0.02

——

ph value

——

——

3.0-4.0

nitrogen content (n)

≤0.001

——

——

chloride (cl)

≤0.001

≤0.005

——

phosphate (po4)

≤0.0005

≤0.002

——

arsenic (as)

≤0.0002

≤0.0002

≤0.0002

manganese (mn)

≤0.05

 ——

——

high iron (fe)

≤0.02

≤0.10

——

copper (cu)

≤0.002

≤0.01

——

zinc (zn)

≤0.005

≤0.02

——

lead (pb)

≤0.002

≤0.005

≤0.002

non-sludging to ammonium hydroxide (as sulfate)

≤0.05

≤0.2

——

magnesium (mg)

 ——

——

≤0.002

titanium (ti)

——

——

≤ 0.002

aluminum (al)

——

——

≤0.02

packing: woven bag lined with plastic bag, kraft bag and fiber drum, net weight is 25kg.

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langfang tianke biotechnology co., ltd.
add: sanghang industrial park, dacheng county,
hebei, china
tel: 86-15076659665 manager ma
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