12354

Iron(II) sulfate heptahydrate

puriss., meets analytical specification of Ph. Eur., BP, USP, FCC, 99.5-104.5% (manganometric)

• Synonym(s): Ferrous sulfate heptahydrate
• Linear Formula: FeSO₄ · 7H₂O
• CAS Number: 7782-63-0
• Molecular Weight: 278.01
• EC Number: 231-753-5
• MDL number: MFCD00149719
• UNSPSC Code: 12352302
• PubChem Substance ID: 329749721
• NACRES: NA.21

Properties

• vapor pressure: 14.6 mmHg ( 25 °C)
• grade: puriss.
• Assay: 99.5-104.5% (manganometric)
• form: crystals
• quality: meets analytical specification of Ph. Eur., BP, USP, FCC
• shelf life: Shelf life is limited
• reaction suitability: reagent type: catalyst; core: iron
• impurities: organic volatile impurities, complies (GC); residual solvents, complies; ≤0.005% heavy metals (as Pb)
• pH: 3-4 (20 °C, 5%)
• density: 1.898 g/mL at 25 °C (lit.)
• anion traces: chloride (Cl^-): ≤100 mg/kg
• cation traces: As: ≤2 mg/kg; Ca: ≤200 mg/kg; Cr: ≤50 mg/kg; Cu: ≤30 mg/kg; Fe³⁺: ≤2000 mg/kg; Hg: ≤1 mg/kg; K: ≤20 mg/kg; Mg: ≤200 mg/kg; Mn: ≤1000 mg/kg; Na: ≤100 mg/kg; Ni: ≤50 mg/kg; Pb: ≤2 mg/kg; Zn: ≤20 mg/kg
• suitability: complies for appearance of solution
• SMILES string: O.O.O.O.O.O.O.[Fe++].[O-]S([O-])(=O)=O
• InChI: 1S/Fe.H2O4S.7H2O/c;1-5(2,3)4;;;;;;;/h;(H2,1,2,3,4);7*1H2/q+2;;;;;;;;/p-2
• InChI key: SURQXAFEQWPFPV-UHFFFAOYSA-L

Description

General description

Iron(II) sulfate heptahydrate is a heptahydrate of iron(II) sulfate. It undergoes thermal degradation to afford hydrosulfate and oxysulfate of iron(III). Isothermal and dynamic thermal analysis methods have been proposed to study its thermal decomposition in air.

Application

Iron(II) sulfate heptahydrate (FeSO₄.7H₂O) may be used in the synthesis of maghemite nanoparticles.

Packaging

bottled under inert gas

Caution

tends to oxidation by air

Safety Information

• Pictograms: GHS07
• Signal Word: Warning
• Hazard Statements: H302,H315,H319
• Precautionary Statements: P264 - P280 - P301 + P312 - P302 + P352 - P305 + P351 + P338 - P332 + P313
• Hazard Classifications: Acute Tox. 4 Oral - Eye Irrit. 2 - Skin Irrit. 2
• Storage Class Code: 13 - Non Combustible Solids
• WGK: WGK 1
• Flash Point(F): Not applicable
• Flash Point(C): Not applicable