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12354

Sigma-Aldrich

Iron(II) sulfate heptahydrate

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

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:
12352302
PubChem Substance ID:
329749721
NACRES:
NA.21

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

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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

pictograms

Exclamation mark
GHS07

signalword

Warning

Hazard Classifications

Acute Tox. 4 Oral - Eye Irrit. 2 - Skin Irrit. 2

Storage Class

13 - Non Combustible Solids

wgk_germany

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Synthesis and characterization of γ-Fe2O3 nanoparticles for applications in magnetic hyperthermia.
Avram A, et al.
Synthesis, 10(P151), 1-1 (2011)
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
Xiao-Kui Ma et al.
Carbohydrate polymers, 92(2), 1188-1196 (2013-02-13)
The influence of several components on exopolysaccharide (EPS) production and antioxidative activity (TEAC, Trolox-Equivalent Antioxidant Capacity) as well as their effects on the morphological development and cell viability of Phellinus sp. P0988 was determined. Rutin, FeSO(4), Tween 80 and complex
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