Product Name

: DRIED FERROUS SULFATE

C.A.S. No.

: 7720-78-7

Molecular Formula

: FeSO₄

Molecular Weight

: 151.91g/mol

SPECIFICATION

IP

BP

Description

Grayish white to buff colored powder.

Grayish white powder.

Solubility

-

Slowly but freely soluble in water. Very soluble in boiling water, practically insoluble in ethanol (96%)

pH

-

3.0-4.0

Identification

• Reaction
• Reaction
• Assay

• Reaction of sulfates
• Reaction of Ferrous Salt

• Reaction of sulfates
• Reaction of Irons
• It complies with limit of assay.

Chloride

-

NMT 300 ppm

Insoluble Substances

-

-

Basic sulphate

Producing solution that is not more than faintly turbid.

-

Arsenic

NMT 3 ppm

-

Lead

NMT 50 ppm

-

Mercury

-

-

Chromium

-

NMT 100 ppm

Copper

NMT 50 ppm

NMT 50 ppm

Ferric ions

-

NMT 0.5 %

Manganese

NMT 0.1 %

NMT 0.1 %

Nickel

-

NMT 100 ppm

Zinc

NMT 500 ppm

NMT 100 ppm

Organic volatile impurities

-

-

Residual Solvents

-

-

Assay

86.0 % - 90.0 %

86.0 % - 90.0 %