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214698

Sigma-Aldrich

Pyridinium dichromate

98%

Synonyme(s) :

PDC

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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

Niveau de qualité

200

Pureté

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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Description générale

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

Application

Oxidizing agent for conversion of primary alcohols to aldehydes and ketones, acetals to esters, and didehydroketones to enones 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

Certificats d'analyse (COA)

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J. Mol. Catal. A: Chem., 250, 70-70 (2006)
Yihui Zhou et al.
Environmental pollution (Barking, Essex : 1987), 219, 932-938 (2016-10-07)
In this study, polybrominated diphenyl ethers (PBDEs) and methoxylated polybrominated diphenyl ethers (MeO-PBDEs) were analyzed in eleven freshwater fish species from Dianshan Lake, Shanghai, China. The highest concentrations of PBDEs and MeO-PBDEs were found in snakehead, with mean values of
J M Bokhorst et al.
Modern pathology : an official journal of the United States and Canadian Academy of Pathology, Inc, 33(5), 825-833 (2019-12-18)
Tumor budding is a promising and cost-effective biomarker with strong prognostic value in colorectal cancer. However, challenges related to interobserver variability persist. Such variability may be reduced by immunohistochemistry and computer-aided tumor bud selection. Development of computer algorithms for this
Hong-Viet Ngo et al.
eLife, 9 (2020-07-14)
Sleep is pivotal for memory consolidation. According to two-stage accounts, memory traces are gradually translocated from hippocampus to neocortex during non-rapid-eye-movement (NREM) sleep. Mechanistically, this information transfer is thought to rely on interactions between thalamocortical spindles and hippocampal ripples. To
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
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