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214698

Sigma-Aldrich

Pyridinium dichromate

98%

Synonyme(s) :

PDC

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100 G
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500 G
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About This Item

Formule empirique (notation de Hill) :
C10H10N2 · H2Cr2O7
Numéro CAS:
20039-37-6
Poids moléculaire :
376.20
Numéro CE :
243-478-8
Numéro MDL:
MFCD00013105
Code UNSPSC :
12352005
ID de substance PubChem :
24852846
Nomenclature NACRES :
NA.22

127,00 $

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Niveau de qualité

200

Essai

98%

Forme

solid

Pertinence de la réaction

reagent type: oxidant

Pf

152-153 °C (lit.)

Chaîne SMILES 

c1ccncc1.c2ccncc2.O[Cr](=O)(=O)O[Cr](O)(=O)=O

InChI

1S/2C5H5N.2Cr.2H2O.5O/c2*1-2-4-6-5-3-1;;;;;;;;;/h2*1-5H;;;2*1H2;;;;;/q;;2*+1;;;;;;;/p-2

Clé InChI

RCBVKBFIWMOMHF-UHFFFAOYSA-L

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Catégories apparentées

Description générale

Pyridinium dichromate is a pyridinium salt and strong oxidizing agent to convert primary alcohols and secondary alcohols to aldehydes and ketones respectively.[1]

Application

Oxidizing agent for conversion of primary alcohols to aldehydes and ketones,[2] acetals to esters,[3] and didehydroketones to enones[4] in the presence of tert-butyl hydroperoxide (cat. no. 213128).

Mention d'avertissement

Danger

Mentions de danger

H228,H314,H317,H350i,H410

Classification des risques

Aquatic Acute 1 - Aquatic Chronic 1 - Carc. 1B Inhalation - Eye Dam. 1 - Flam. Sol. 1 - Skin Corr. 1B - Skin Sens. 1

Code de la classe de stockage

4.1A - Other explosive hazardous materials

Classe de danger pour l'eau (WGK)

WGK 3

Point d'éclair (°F)

Not applicable

Point d'éclair (°C)

Not applicable

Équipement de protection individuelle

Eyeshields, Faceshields, Gloves, type P3 (EN 143) respirator cartridges

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Certificats d'analyse (COA)

Lot/Batch Number
MKCR9548
MKCR1441
MKCR1442
MKCR1440
MKCS4424

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Retrouvez la documentation relative aux produits que vous avez récemment achetés dans la Bibliothèque de documents.

Consulter la Bibliothèque de documents

K M Halkes et al.
Carbohydrate research, 309(2), 161-174 (1998-09-19)
To contribute to the possibilities to study the ability of oligosaccharide fragments of hyaluronic acid to induce angiogenesis, several hyaluronic-acid-related oligosaccharides and their 6-O-sulfated analogues were synthesised as their 4-methoxyphenyl glycosides having 2-acetamido-2-deoxy-D-glucopyranose at the reducing end. In all syntheses
Sameer Shivji et al.
Histopathology, 77(3), 351-368 (2020-05-03)
Poorly differentiated clusters (PDC), defined as small groups of ≥5 tumour cells without glandular differentiation, have gained recent attention as a promising prognostic factor in colorectal cancer (CRC). Numerous studies have shown PDC to be significantly associated with other adverse
Yong-Hua Li et al.
Epilepsy research, 128, 149-157 (2016-11-14)
Localization of the epileptogenic zone (EZ) is essential for the successful surgical treatment of medically intractable epilepsy. In the present study, stereo-EEG (SEEG) recordings were obtained from seven patients underwent presurgical evaluation for treatment of intractable epilepsy. Partial directed coherence
Dympna Leonard et al.
Nutrition & dietetics: the journal of the Dietitians Association of Australia, 75(5), 457-467 (2018-12-12)
Anaemia during pregnancy is common worldwide. In Australia between 7.1% and 11% of mothers have been reported to have anaemia in pregnancy. Higher rates are reported for Aboriginal and Torres Strait Islander women (Townsville: 34.2%, remote Northern Territory: 50%). The
The Journal of Organic Chemistry, 57, 5013-5013 (1992)
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Articles

Oxidizing and Reducing Agents

Oxidation and reduction reactions are some of the most common transformations encountered in organic synthesis

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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