Properties

• Melting point:

• 64 °C

• Density 

• 1.897 g/mL at 25 °C

• vapor pressure 

• 14.6 mm Hg ( 25 °C)
  

• storage temp. 

• 2-8°C
  

• solubility 

• 25.6 g/100 mL (20°C)

• form 

• Solution

• color 

• Slightly greenish to blue

• PH

• 3.0-4.0 (25℃, 50mg/mL in H2O)

• Water Solubility 

• 25.6 g/100 mL (20 ºC)

• Sensitive 

• Air Sensitive & Hygroscopic

• Merck 

• 14,4057

• Stability:

• Stable. Substances to be avoided include strong oxidizing agents. Air and moisture sensitive.

• InChIKey

• SURQXAFEQWPFPV-UHFFFAOYSA-L

• CAS DataBase Reference

• 7782-63-0(CAS DataBase Reference)

• EPA Substance Registry System

• Sulfuric acid, iron(2+) salt (1:1), heptahydrate(7782-63-0)

2.Applications

As analytical reagent; as raw material for ferrite; raw material to produce magnetic iron oxide, iron(III) oxide and iron blue inorganic pigment, iron catalyst and poly iron sulfate; as chromatographic reagent. In agriculture, it is used as pesticide in agriculture to control wheat smut, scab of apple and bear, fruit tree decay; as fertilizer to remove moss and lichen of food trunk. Medically it is used as local astringent, blood tonic and anti-anemia.  Ferrous sulfate heptahydrate (feed grade) can be used as the iron fortifier for feed additive. Ferrous sulfate heptahydrate (food grade) is used as nutrition supplements, such as iron fortifier, coloring agent for fruit and vegetable. According to Chinese regulation, it can be used in following foods and with allowed amounts:
Sweets with filling and salt: 3000~6000 mg/kg; 
Cereals with high iron content and corresponding products (maximum daily consumption 50g): 860~960 mg/kg;
Dairy and infant foods: 300-500 mg/kg;
Cereals and corresponding products: 120~140 mg/kg;
Beverages: 50~100 mg/kg. It is used to produce iron salt, iron oxide pigment, mordant, water purifier, preservatives, disinfectant, etc.