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243361

Sigma-Aldrich

Chrom(III)-kaliumsulfat Dodecahydrat

ACS reagent, ≥98%

Synonym(e):

Chrom-alaun, Kaliumchrom(III)-sulfat Dodecahydrat

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About This Item

Lineare Formel:
CrK(SO4)2 · 12H2O
CAS-Nummer:
7788-99-0
Molekulargewicht:
499.40
EG-Nummer:
233-401-6
MDL-Nummer:
MFCD00149917
UNSPSC-Code:
12352302
PubChem Substanz-ID:
329752454
NACRES:
NB.24
Preise und Verfügbarkeit sind derzeit nicht verfügbar.

Qualität

ACS reagent

Assay

≥98%
98.0-102.0% (ACS specification)

Form

crystals

Eignung der Reaktion

reagent type: catalyst
core: chromium

Verunreinigungen

≤0.01% insolubles

mp (Schmelzpunkt)

89 °C (lit.)

Anionenspuren

chloride (Cl-): ≤0.002%

Kationenspuren

Al: ≤0.02%
Fe: ≤0.01%
NH4+: ≤0.01%
heavy metals (as Pb): ≤0.01%

SMILES String

O.O.O.O.O.O.O.O.O.O.O.O.[K+].[Cr+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O

InChI

1S/Cr.K.2H2O4S.12H2O/c;;2*1-5(2,3)4;;;;;;;;;;;;/h;;2*(H2,1,2,3,4);12*1H2/q+3;+1;;;;;;;;;;;;;;/p-4

InChIKey

ZFVHBEKVAITXHW-UHFFFAOYSA-J

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Allgemeine Beschreibung

Chromium(III) potassium sulfate dodecahydrate (Potassium chromium(III) sulfate dodecahydrate, Chrome alum) is widely used chemical in dyeing and textile industry. It can be synthesized by reacting sulfur dioxide with potassium dichromate (dissolved in sulfuric acid) at -38°C.[1]

Anwendung

Chromium(III) potassium sulfate dodecahydrate [KCr(SO4)2.12H2O] has been used for the dissolution of gelatin in various studies.[2][3]
It may be used as a starting material in the synthesis of quasi-monodisperse spherical core-shell particles of Cr/α-Cr2O3 to be used as solar absorbers.[4]

Piktogramme

Exclamation mark
GHS07

Signalwort

Warning

H-Sätze

H315,H319

Gefahreneinstufungen

Eye Irrit. 2 - Skin Irrit. 2

Lagerklassenschlüssel

11 - Combustible Solids

WGK

WGK 3

Hier finden Sie alle aktuellen Versionen:

Analysenzertifikate (COA)

Lot/Batch Number
MKCV8744
MKCR9475
MKCP7520
MKCM2995
MKCJ4730

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Gelatine -Lösung Type B, 2% in H2O, tissue culture grade, BioReagent, suitable for cell culture

Sigma-Aldrich

G1393

Gelatine -Lösung

Gelatine aus Schweinehaut Type A, lyophilized powder, γ-irradiated, BioXtra, suitable for cell culture

Sigma-Aldrich

G9136

Gelatine aus Schweinehaut

Zinkchlorid ACS reagent, ≥97%

Sigma-Aldrich

211273

Zinkchlorid

Gelatine tested according to Ph. Eur.

Sigma-Aldrich

48723

Gelatine

M Van Der Hofstadt et al.
Ultramicroscopy, 154, 29-36 (2015-03-21)
With the use of the atomic force microscope (AFM), the Nanomicrobiology field has advanced drastically. Due to the complexity of imaging living bacterial processes in their natural growing environments, improvements have come to a standstill. Here we show the in
Mark W Moyle et al.
The Journal of cell biology, 204(5), 647-657 (2014-02-26)
Recruitment of Mad1-Mad2 complexes to unattached kinetochores is a central event in spindle checkpoint signaling. Despite its importance, the mechanism that recruits Mad1-Mad2 to kinetochores is unclear. In this paper, we show that MAD-1 interacts with BUB-1 in Caenorhabditis elegans.
Ulf Yrlid et al.
Journal of leukocyte biology, 105(1), 195-202 (2018-09-29)
Endothelial injury makes the vessel wall vulnerable to cardiovascular diseases. Injured endothelium regenerates by collective sheet migration, that is, the endothelial cells coordinate their motion and regrow as a sheet of cells with retained cell-cell contacts into the wounded area.
Black Cr/α-Cr2O3 nanoparticles based solar absorbers.
Khamlich S, et al.
Physica B: Condensed Matter, 407(10), 1509-1512 (2012)
L A Kowalski et al.
Cancer letters, 103(1), 65-69 (1996-05-15)
Tumor promoters such as phorbol esters, teleocidin and okadaic acid increase the numbers of multilayered, transformed foci produced by BPV DNA-transfected C3H/10T1/2 cells. We questioned whether arsenic and chromium, which are known human carcinogens also enhance transformation of BPV DNA-transfected
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Questions

1–2 of 2 Questions  

  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

      Helpful?

  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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