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214698

Sigma-Aldrich

Pyridinium dichromate

98%

Synonym(s):

PDC

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About This Item

Empirical Formula (Hill Notation):
C10H10N2 · H2Cr2O7
CAS Number:
20039-37-6
Molecular Weight:
376.20
EC Number:
243-478-8
MDL number:
MFCD00013105
UNSPSC Code:
12352005
PubChem Substance ID:
24852846
NACRES:
NA.22

Quality Level

200

Assay

98%

form

solid

reaction suitability

reagent type: oxidant

mp

152-153 °C (lit.)

SMILES string

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

InChI key

RCBVKBFIWMOMHF-UHFFFAOYSA-L

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General description

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).

Signal Word

Danger

Hazard Statements

H228,H314,H317,H350i,H410

Hazard Classifications

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

Storage Class Code

4.1A - Other explosive hazardous materials

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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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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