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Ferrous Sulfate Heptahydrate 99%~101% AR Grade Reagent

Cas Number:7782-63-0
Formula: FeSO4•7H2O
Molar Mass:278.02
EC Number:231-753-5

Quantity:
  • AR
  • LABOR
  • 211502129

Ferrous Sulfate Heptahydrate 99%~101% AR Grade Reagent

Cas Number:7782-63-0

Formula: FeSO4·7H2O

Molar Mass:278.02

EC Number:231-753-5


Physicochemical properties:

Blue-green monoclinic crystals or granules. Odorless. Weathered in dry air. The surface is oxidized to a brown basic ferric sulfate in humid air. It becomes the tetrahydrate at 56.6 ° C and becomes a monohydrate at 65 ° C. It is soluble in water, almost insoluble in ethanol. The aqueous solution slowly oxidizes in the air when it is cold, and oxidizes faster when it is hot. The addition of alkali or dew can accelerate its oxidation. The relative density (d15) is 1.897.


Usage:

Chromatographic reagents. A drop analysis is performed to determine platinum, selenium, nitrite and nitrate. Reducing agent. Manufacturing ferrite. Clean water. Polymerization catalyst. Photoengraving.


Packing:

500g/25kg






Item of Analysis

Standard

Assay,%

99.0~101.0

Insoluble in water,%

0.005 max

Chloride(Cl),%

0.001 max

Nitrogen compounds(N) ,%

0.001 max

Phosphate(PO4) ,%    

0.0005 max

Arsenic(As),%

0.0002 max

Manganese(Mn),%

0.05 max

Ferric(Fe),%

0.02 max

Copper(Cu),%

0.002 max

Zinc(Zn),%

0.005 max

Lead(Pb),%

0.002 max

Substances not precipitated by NH4OH(as SO4),%

0.05 max


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