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44970

Sigma-Aldrich

Iron(II) sulfate heptahydrate

puriss. p.a., ACS reagent

Synonym(s):

Ferrous sulfate heptahydrate

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About This Item

Linear Formula:
FeSO4 · 7H2O
CAS Number:
7782-63-0
Molecular Weight:
278.01
EC Number:
231-753-5
MDL number:
MFCD00149719
UNSPSC Code:
12352300
PubChem Substance ID:
329756576

grade

ACS reagent
puriss. p.a.

vapor pressure

14.6 mmHg ( 25 °C)

shelf life

~2 yr

impurities

≤0.001% total nitrogen (N)

pH

3.0-4.0 (25 °C, 50 mg/mL in H2O)

density

1.898 g/mL at 25 °C (lit.)

anion traces

chloride (Cl-): ≤10 mg/kg
phosphate (PO43-): ≤10 mg/kg

cation traces

As: ≤2 mg/kg
Ca: ≤20 mg/kg
Cd: ≤5 mg/kg
Co: ≤50 mg/kg
Cr: ≤20 mg/kg
Cu: ≤10 mg/kg
Fe3+: ≤500 mg/kg
K: ≤50 mg/kg
Mg: ≤50 mg/kg
Mn: ≤500 mg/kg
Na: ≤50 mg/kg
Ni: ≤50 mg/kg
Pb: ≤5 mg/kg
Zn: ≤10 mg/kg

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

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Pictograms

Exclamation mark
GHS07

Signal Word

Warning

Hazard Statements

H302,H315,H319

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

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Regulatory Information

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Thermal analysis of iron (II) sulphate heptahydrate in air. V: Thermal decomposition of hydroxy and oxysulphates.
Swamy M and Prasad T.
Journal of Thermal Analysis and Calorimetry, 20(1), 107-114 (1981)
Thermal analysis of iron (II) sulphate heptahydrate in air: III. Thermal decomposition of intermediate hydrates.
Swami MSR and Prasad TP.
Journal of Thermal Analysis and Calorimetry, 19(2), 297-304 (1980)
Yanyan Wei et al.
Food chemistry, 138(2-3), 1952-1958 (2013-02-16)
The present study evaluated the effectiveness of germination and iron fortification on iron concentration and bioavailability of brown rice. Iron fortification during germination process with 0.05-2 g/L ferrous sulfate increased the iron concentration in germinated brown rice from 1.1 to
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