IUPAC Name: Iron(2+) sulfate heptahydrate
Molecular Formula: FeSO₄^.7(H₂O)
Molecular Weight: 278.01 g/mol
SMILES: S(=O)(=O)([O-])[O-].O.[Fe+2].O.O.O.O.O.O
InChI: InChI=1/Fe.H2O4S.7H2O/c;1-5(2,3)4;;;;;;;/h;(H2,1,2,3,4);7*1H2/q+2;;;;;;;;/p-2
Classification Code: Agricultural Chemical; Growth regulator / Fertilizer; Hematinic; Herbicide; Mutation data
Stability: Stable. Substances to be avoided include strong oxidizing agents. Air and moisture sensitive.
storage temperature: 2-8 °C
solubility: 25.6 g/100 mL (20 °C)
Water Solubility: 25.6 g/100 mL (20 °C)
Sensitive: Air Sensitive & Hygroscopic
Density: 0.999 g/mL at 25 °C
Enthalpy of Vaporization: 62.94 kJ/mol 
Boiling Point: 330 °C at 760 mmHg 
Melting Point: 64 °C
Vapour Pressure of Ferrous sulfate heptahydrate (CAS NO.7782-63-0): 3.35E-05 mmHg at 25 °C

Poison by intravenous, intraperitoneal, and subcutaneous routes. Moderately toxic by ingestion and rectal routes. Mutation data reported. When heated to decomposition it emits toxic fumes of SO_x.
Hazard Codes: Xn, Xi 
Risk Statements: 22 
R22:Harmful if swallowed.
Safety Statements: 36/37/39 
S36/37/39:Wear suitable protective clothing, gloves and eye/face protection.
RIDADR: UN 9125
RTECS of Ferrous sulfate heptahydrate (CAS NO.7782-63-0): NO8510000

OSHA PEL: TWA 1 mg(Fe)/m³
ACGIH TLV: TWA 1 mg(Fe)/m³

  Ferrous sulfate heptahydrate (CAS NO.7782-63-0), its Synonyms are Fesofor ; Fesotyme ; Haemofort ; Iron protosulfate ; Iron sulfate heptahydrate ; Iron(2+) sulfate (1:1) heptahydrate ; Iron(2+) sulfate heptahydrate ; Ironate ; Irosul ; Melanterite mineral ; Presfersul ; Siderotil mineral ; Szomolnikite mineral ; Tauriscite mineral ; Iron(II) sulfate (1:1), heptahydrate ; Iron(II) sulfate heptahydrate ; Sulfuric acid, iron(2+) salt (1:1), heptahydrate . It is light blue or light blue-green solid.