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243361

Sigma-Aldrich

Chromium(III) potassium sulfate dodecahydrate

ACS reagent, ≥98%

Sinonimo/i:

Chrome alum, Potassium chromium(III) sulfate dodecahydrate

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5 G
33,70 €
100 G
42,60 €
500 G
301,00 €

33,70 €

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5 G
33,70 €
100 G
42,60 €
500 G
301,00 €

About This Item

Formula condensata:
CrK(SO4)2 · 12H2O
Numero CAS:
7788-99-0
Peso molecolare:
499.40
Numero CE:
233-401-6
Numero MDL:
MFCD00149917
Codice UNSPSC:
12352302
ID PubChem:
329752454
NACRES:
NB.24

33,70 €

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Grado

ACS reagent

Saggio

≥98%
98.0-102.0% (ACS specification)

Stato

crystals

Impiego in reazioni chimiche

reagent type: catalyst
core: chromium

Impurezze

≤0.01% insolubles

Punto di fusione

89 °C (lit.)

Anioni in tracce

chloride (Cl-): ≤0.002%

Cationi in tracce

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

Stringa SMILE

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
ZFVHBEKVAITXHW-UHFFFAOYSA-J

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Descrizione generale

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]

Applicazioni

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]

Pittogrammi

Exclamation mark
GHS07

Avvertenze

Warning

Indicazioni di pericolo

H315,H319

Classi di pericolo

Eye Irrit. 2 - Skin Irrit. 2

Codice della classe di stoccaggio

11 - Combustible Solids

Classe di pericolosità dell'acqua (WGK)

WGK 3

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Certificati d'analisi (COA)

Lot/Batch Number
MKCV8744
MKCR9475
MKCP7520
MKCM2995
MKCJ4730

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

    1 risposta

    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 risposta

    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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