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71063

Sigma-Aldrich

Goethite

30-63% Fe

Synonym(s):

Iron(III) oxide, Ferric hydroxide oxide

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100 G
€84.20

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100 G
€84.20

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

€84.20

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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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Adele M Jones et al.
Environmental science & technology, 51(21), 12573-12582 (2017-10-05)
In this study, temporal changes in the redox properties of three 0.5 g/L smectite suspensions were investigated-a montmorillonite (MAu-1) and two nontronites (NAu-1 and NAu-2) in the presence of 1 mM aqueous Fe(II) at pH 7.8. X-ray absorption spectroscopy revealed
Michael P Schmidt et al.
Langmuir : the ACS journal of surfaces and colloids, 33(34), 8525-8532 (2017-07-22)
DNA fate in soil plays an important role in the cycling of genetic information in the environment. Adsorption onto mineral surfaces has great impact on this function. This study probes the kinetics, equilibrium behavior and bonding mechanisms associated with adsorption
Wenting Ma et al.
NPJ biofilms and microbiomes, 3, 4-4 (2017-06-27)
Clay minerals and metal oxides, as important parts of the soil matrix, play crucial roles in the development of microbial communities. However, the mechanism underlying such a process, particularly on the formation of soil biofilm, remains poorly understood. Here, we
Tao Wang et al.
The New phytologist, 228(2), 697-711 (2020-04-13)
In nitrogen (N)-limited boreal forests, trees depend on the decomposing activity of their ectomycorrhizal (ECM) fungal symbionts to access soil N. A large fraction of this N exists as proteinaceous compounds associated with mineral particles. However, it is not known
Johannes Kulenkampff et al.
Scientific reports, 8(1), 7091-7091 (2018-05-08)
Phenoxyalkanoic acids like the 4-chloro-2-methylphenoxyacetic acid (MCPA) are the second highest used xenobiotic herbicides worldwide after glyphosate because of their apparently favorable environmental properties. Experimental batch equilibration data suggested a reduced Cu adsorption efficiency with the soil mineral goethite below
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Questions

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  1. 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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  2. 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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