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12354

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Iron(II) sulfate heptahydrate

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

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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
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

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

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Iron(II) sulfate hydrate puriss., meets analytical specification of Ph. Eur., BP, exsiccated, 86.0-89.0% FeSO4 basis

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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
Huifang Wu et al.
Journal of hazardous materials, 243, 86-94 (2012-11-13)
An experiment was conducted in a batch reactor for a real printing and dyeing wastewater pretreatment using Fenton process in this study. The results showed that original pH, hydrogen peroxide concentration and ferrous sulfate concentration affected ORP value and pretreatment
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