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658510

Sigma-Aldrich

Kaliumsulfit

90%

Synonym(e):

Dikaliumsulfit

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25 G
€ 56,00
1 KG
€ 120,00
3 KG
€ 288,00

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25 G
€ 56,00
1 KG
€ 120,00
3 KG
€ 288,00

About This Item

Lineare Formel:
K2SO3
CAS-Nummer:
Molekulargewicht:
158.26
EG-Nummer:
MDL-Nummer:
UNSPSC-Code:
12352302
PubChem Substanz-ID:
NACRES:
NA.22

€ 56,00


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Qualitätsniveau

Assay

90%

SMILES String

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

InChI

1S/2K.H2O3S/c;;1-4(2)3/h;;(H2,1,2,3)/q2*+1;/p-2

InChIKey

BHZRJJOHZFYXTO-UHFFFAOYSA-L

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Anwendung

Kaliumsulfit (K2SO3) kann als Katalysator bei der Oxidation von Schwefeldioxid verwendet werden.[1] Es wird bei der Zubereitung heterozyklischer symmetrischer Isocyanurate auch als anionischer Katalysator für die Zyklotrimerisierung von Arylisocyanaten eingesetzt.[2]

Lagerklassenschlüssel

11 - Combustible Solids

WGK

WGK 1

Flammpunkt (°F)

Not applicable

Flammpunkt (°C)

Not applicable


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Die Dokumentenbibliothek aufrufen

David Crich et al.
Journal of the American Chemical Society, 128(8), 2544-2545 (2006-02-24)
Alkylation of potassium selenosulfate with allylic halides gives Se-allyl seleno Bunte salts. On reaction with thiols at room temperature, these afford mixed dialkyl selenosulfides, which undergo 2,3-sigmatropic rearrangement with loss of selenium, either spontaneously or with assistance by triphenylphosphine, thereby
The reactivity of products of thermal interaction between ammonium meta-vanadate and potassium sulfite as catalysts for oxidation of sulfur dioxide
Fouda MFR, et al.
Applied Catalysis A: General, 223(1-2), 11-27 (2002)
Sulfate catalysed multicomponent cyclisation reaction of aryl isocyanates under green conditions
Dekamin, Mohammad G, et al.
J. Chem. Res. (M), 2005(3), 177-179 (2005)
Xinjian Shi et al.
Nature communications, 5, 4775-4775 (2014-09-03)
Tungsten trioxide/bismuth vanadate heterojunction is one of the best pairs for solar water splitting, but its photocurrent densities are insufficient. Here we investigate the advantages of using helical nanostructures in photoelectrochemical solar water splitting. A helical tungsten trioxide array is

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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