If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/449/386/product-dating-information-mk.pdf
215422
Iron(II) sulfate heptahydrate
ACS reagent, ≥99.0%
Synonym(s):
Ferrous sulfate heptahydrate
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About This Item
Recommended Products
grade
ACS reagent
Quality Level
vapor pressure
14.6 mmHg ( 25 °C)
Assay
≥99.0%
form
powder or crystals
reaction suitability
reagent type: catalyst
core: iron
greener alternative product characteristics
Catalysis
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impurities
≤0.01% insolubles
≤0.05% Substances not pptd by NH4OH
pH
3-4 (25 °C, 50 g/L)
density
1.898 g/mL at 25 °C (lit.)
anion traces
chloride (Cl-): ≤0.001%
phosphate (PO43-): ≤0.001%
cation traces
Cu: ≤0.005%
Fe3+: ≤0.1%
Mn: ≤0.05%
Zn: ≤0.005%
greener alternative category
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
Application
Iron-Catalyzed Efficient Synthesis of Amides from Aldehydes and Amine Hydrochloride Salts
Signal Word
Warning
Hazard Statements
Precautionary Statements
Hazard Classifications
Acute Tox. 4 Oral - Eye Irrit. 2 - Skin Irrit. 2
Storage Class Code
11 - Combustible Solids
WGK
WGK 1
Flash Point(F)
Not applicable
Flash Point(C)
Not applicable
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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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