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For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/418/501/product-dating-information-06-25-mk.pdf
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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Estimated to ship onJune 04, 2026Details
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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
grade
ACS reagent
agency
reag. ISO, reag. Ph. Eur.
product line
EMSURE®
assay
99.5-102.0% (manganometric)
form
solid
potency
319 mg/kg LD50, oral (Rat)
greener alternative product characteristics
Design for Energy Efficiency
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sustainability
Greener Alternative Product
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%
greener alternative category
storage temp.
15-25°C
Quality Level
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Related Categories
1 of 4
This Item | 12354 | 1.03963 | 215422 |
|---|---|---|---|
| form solid | form crystals | form crystalline, solid | form powder or crystals |
| assay 99.5-102.0% (manganometric) | assay 99.5-104.5% (manganometric) | assay - | assay ≥99.0% |
| Quality Level 300 | Quality Level 200 | Quality Level 500 | Quality Level 200 |
| grade ACS reagent | grade - | grade - | grade ACS reagent |
| anion traces chloride (Cl-): ≤0.0005%, phosphate (PO43-): ≤0.001% | anion traces chloride (Cl-): ≤100 mg/kg | anion traces - | anion traces chloride (Cl-): ≤0.001%, phosphate (PO43-): ≤0.001% |
| impurities ≤0.01% Insoluble matter | impurities organic volatile impurities, complies (GC), residual solvents, complies, ≤0.005% heavy metals (as Pb) | impurities - | impurities ≤0.01% insolubles, ≤0.05% Substances not pptd by NH4OH |
Analysis Note
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
General description
We are committed to bringing you Greener Alternative Products, which belong to one of the four categories of greener alternatives. IRON(II) SULFATE HEPTAHYDRATE is essential for developing greener energy solutions, particularly in iron-based lithium-ion batteries. Its eco-friendly properties enhance energy storage efficiency, reduce reliance on harmful materials, and support the advancement of sustainable technologies. Click here for more information.
Other Notes
Legal Information
signalword
Warning
hcodes
Hazard Classifications
Acute Tox. 4 Oral - Eye Irrit. 2 - Skin Irrit. 2
Storage Class
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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How can I determine the shelf life / expiration / retest date of this product?
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Can this be used for mammalian cell culture supplementation?
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The product has undergone no testing to determine its suitability for cell culture applications. A product that has been tested for cell culture use is F8633.
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How is shipping temperature determined? And how is it related to the product storage temperature?
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Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf
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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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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.
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