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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:
Molecular Weight:
278.01
EC Number:
MDL number:
UNSPSC Code:
12352302
PubChem Substance ID:
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.)

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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).[1] Isothermal and dynamic thermal analysis methods have been proposed to study its thermal decomposition in air.[2]

Application

Iron(II) sulfate heptahydrate (FeSO4.7H2O) may be used in the synthesis of maghemite nanoparticles.[3]

Packaging

bottled under inert gas

Caution

tends to oxidation by air

Pictograms

Exclamation mark

Signal Word

Warning

Hazard Statements

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


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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