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31236

Sigma-Aldrich

Iron(II) sulfate heptahydrate

puriss. p.a., ACS reagent, reag. ISO, reag. Ph. Eur., 99.0-103.4% (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:
329753692
assay:
99.0-103.4% (manganometric)
form:
crystals

grade

ACS reagent
puriss. p.a.

agency

USP/NF
reag. ISO
reag. Ph. Eur.

vapor pressure

14.6 mmHg ( 25 °C)

assay

99.0-103.4% (manganometric)

form

crystals

shelf life

Shelf life is limited

impurities

≤0.001% total nitrogen (N)

pH

3-4 (20 °C, 5%)

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: ≤50 mg/kg
Cu: ≤10 mg/kg
Fe3+: ≤250 mg/kg
K: ≤20 mg/kg
Mg: ≤20 mg/kg
Mn: ≤500 mg/kg
Na: ≤20 mg/kg
Pb: ≤5 mg/kg
Zn: ≤20 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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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

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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)
Hsiao-Chi Chuang et al.
Toxicology and applied pharmacology, 266(3), 329-334 (2012-12-25)
Pulmonary epithelial lining fluid (ELF) is the first substance to make contact with inhaled particulate matter (PM) and interacts chemically with PM components. The objective of this study was to determine the role of ELF in oxidative stress, DNA damage
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
Roshini Ebenezer et al.
Tropical medicine & international health : TM & IH, 18(8), 942-951 (2013-07-11)
To assess the impact of deworming and iron supplementation on the cognitive abilities and educational achievement of school-age children in Sri Lanka. Prospective, placebo-controlled randomised study. The treatment group received deworming and weekly iron supplementation for 6 months; the control group
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