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71063

Sigma-Aldrich

Goethite

30-63% Fe

Synonym(s):

Iron(III) oxide, Ferric hydroxide oxide

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About This Item

Linear Formula:
Fe(OH)O
CAS Number:
20344-49-4
Molecular Weight:
88.85
EC Number:
243-746-4
MDL number:
MFCD00064782
UNSPSC Code:
12352300
PubChem Substance ID:
57652271
NACRES:
NA.23
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form

powder

concentration

30-63% Fe

SMILES string

O[Fe]=O

InChI

1S/Fe.H2O.O/h;1H2;/q+1;;/p-1

InChI key

AEIXRCIKZIZYPM-UHFFFAOYSA-M

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General description

contains varying amounts of MgO2, SiO2, CaO, Al2O3

Application

adsorbent

Storage Class Code

11 - Combustible Solids

WGK

nwg

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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Certificates of Analysis (COA)

Lot/Batch Number
BCCM8374
BCCL2178
BCCJ9905
BCCD1349
BCCB4398

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Xia Liu et al.
Environmental pollution (Barking, Essex : 1987), 249, 785-793 (2019-04-06)
The increased applications and production of graphene oxide (GO) make the necessity to study information on the interaction of GO with minerals. In this work, adsorption and desorption were used to study the reversibility of interaction between GO and goethite/kaolinite.
Shilpa Agarwal et al.
ACS sustainable chemistry & engineering, 5(3), 2668-2678 (2017-04-18)
Limonite, a low-cost iron ore, was investigated as a potential hydrotreatment catalyst for kraft lignin without the use of an external solvent (batch reactor, initial H
Ilana J Porter et al.
The journal of physical chemistry letters, 9(14), 4120-4124 (2018-07-10)
Small polaron formation limits the mobility and lifetimes of photoexcited carriers in metal oxides. As the ligand field strength increases, the carrier mobility decreases, but the effect on the photoexcited small polaron formation is still unknown. Extreme ultraviolet transient absorption
Jie Cao et al.
Journal of colloid and interface science, 552, 764-770 (2019-06-10)
Surfactants are easily accumulated in groundwater, sediment, and aquifers, due to their excessive use in household, industrial, and agricultural processes. These residual surfactants are expected to influence the transformation and fate of organic contaminants by Fe(II) sorbed on iron oxides
Marina Colzato et al.
Journal of environmental quality, 46(6), 1206-1214 (2018-01-03)
Chemical speciation of soil cadmium (Cd) dictates its mobility and potential toxicity in the environment. Our objective was to compare temporal changes in speciation of Cd(II) reacted with samples from six Brazilian soils having varying Cd(II) sorption capacities. Cadmium L-edge
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Questions

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  1. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 answer

    1. 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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  2. How can I determine the shelf life / expiration / retest date of this product?

    1 answer

    1. 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

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