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Iron(II) sulfate heptahydrate can oxidize over time, particularly when exposed to air. The recommended storage temperature is 15-25°C. The lot-specific shelf life is available on the Certificate of Analysis.
1.03965
Iron(II) sulfate heptahydrate
for analysis EMSURE® ACS,ISO,Reag. Ph Eur
Synonym(s):
Iron(II) sulfate heptahydrate, Iron
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100 G
$99.70
500 G
$216.00
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$332.00
5 KG
$1,160.00
25 KG
$7,980.00
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100 G
$99.70
500 G
$216.00
1 KG
$332.00
5 KG
$1,160.00
25 KG
$7,980.00
About This Item
Empirical Formula (Hill Notation):
FeO4S · 7H2O
CAS Number:
Molecular Weight:
278.01
MDL number:
UNSPSC Code:
12352302
EC Index Number:
231-753-5
NACRES:
NA.21
Assay:
99.5-102.0% (manganometric)
grade:
ACS reagent
form:
solid
Recommended Products
grade
ACS reagent
Quality Level
Agency
reag. ISO
reag. Ph. Eur.
product line
EMSURE®
Assay
99.5-102.0% (manganometric)
form
solid
potency
319 mg/kg LD50, oral (Rat)
impurities
≤0.01% Insoluble matter
pH
3-4 (20 °C, 50 g/L in H2O)
mp
>60 °C (Elimination of water of crystallisation)
density
1.89 g/cm3 at 20 °C
bulk density
600 kg/m3
anion traces
chloride (Cl-): ≤0.0005%
phosphate (PO43-): ≤0.001%
cation traces
As: ≤0.0002%
Ca: ≤0.005%
Co: ≤0.0025%
Cr: ≤0.0050%
Cu: ≤0.001%
Fe3+: ≤0.02%
K: ≤0.002%
Mg: ≤0.002%
Mn: ≤0.05%
N: ≤0.001%
Na: ≤0.02%
Ni: ≤0.0050%
Pb: ≤0.0005%
Zn: ≤0.0050%
heavy metals (as Pb): ≤0.005%
storage temp.
15-25°C
SMILES string
[Fe+2].[S](=O)(=O)([O-])[O-].O.O.O.O.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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Related Categories
Linkage
Replaces: FX0260-1
Analysis Note
Assay (manganometric): 99.5 - 102.0 %
Identity: passes test
Appearance of solution: passes test
Insoluble matter: ≤ 0.01 %
pH-value (5 %; water): 3.0 - 4.0
Chloride (Cl): ≤ 0.0005 %
Phosphate (PO₄): ≤ 0.001 %
Total nitrogen (N): ≤ 0.001 %
Heavy metals as Pb: ≤ 0.005 %
As (Arsenic): ≤ 0.0002 %
Ca (Calcium): ≤ 0.005 %
Cr (Chromium): ≤ 0.0050 %
Cu (Copper): ≤ 0.001 %
Fe III (Iron III): ≤ 0.02 %
K (Potassium): ≤ 0.002 %
Mg (Magnesium): ≤ 0.002 %
Mn (Manganese): ≤ 0.05 %
Na (Sodium): ≤ 0.02 %
Ni (Nickel): ≤ 0.0050 %
Pb (Lead): ≤ 0.0005 %
Zn (Zinc): ≤ 0.0050 %
Co (Cobalt): ≤ 0.0025 %
Substance not precipitated by ammonium hydroxide: ≤ 0.1 %
Corresponds to ACS,ISO,Reag. Ph Eur
Identity: passes test
Appearance of solution: passes test
Insoluble matter: ≤ 0.01 %
pH-value (5 %; water): 3.0 - 4.0
Chloride (Cl): ≤ 0.0005 %
Phosphate (PO₄): ≤ 0.001 %
Total nitrogen (N): ≤ 0.001 %
Heavy metals as Pb: ≤ 0.005 %
As (Arsenic): ≤ 0.0002 %
Ca (Calcium): ≤ 0.005 %
Cr (Chromium): ≤ 0.0050 %
Cu (Copper): ≤ 0.001 %
Fe III (Iron III): ≤ 0.02 %
K (Potassium): ≤ 0.002 %
Mg (Magnesium): ≤ 0.002 %
Mn (Manganese): ≤ 0.05 %
Na (Sodium): ≤ 0.02 %
Ni (Nickel): ≤ 0.0050 %
Pb (Lead): ≤ 0.0005 %
Zn (Zinc): ≤ 0.0050 %
Co (Cobalt): ≤ 0.0025 %
Substance not precipitated by ammonium hydroxide: ≤ 0.1 %
Corresponds to ACS,ISO,Reag. Ph Eur
Legal Information
EMSURE is a registered trademark of Merck KGaA, Darmstadt, Germany
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Signal Word
Warning
Hazard Statements
Precautionary 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)
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To whom it may concern, We keep Iron(II) sulfate heptahydrate at room temperature over the years. I am wondering if there is a chance it can get oxidized?
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