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214698

Sigma-Aldrich

Pyridinium dichromate

98%

Sinonimo/i:

PDC

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72,50 €
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100 G
72,50 €
500 G
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About This Item

Formula empirica (notazione di Hill):
C10H10N2 · H2Cr2O7
Numero CAS:
20039-37-6
Peso molecolare:
376.20
Numero CE:
243-478-8
Numero MDL:
MFCD00013105
Codice UNSPSC:
12352005
ID PubChem:
24852846
NACRES:
NA.22

72,50 €

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Livello qualitativo

200

Saggio

98%

Stato

solid

Impiego in reazioni chimiche

reagent type: oxidant

Punto di fusione

152-153 °C (lit.)

Stringa SMILE

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
RCBVKBFIWMOMHF-UHFFFAOYSA-L

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Categorie correlate

Descrizione generale

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

Applicazioni

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).

Avvertenze

Danger

Indicazioni di pericolo

H228,H314,H317,H350i,H410

Classi di pericolo

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

Codice della classe di stoccaggio

4.1A - Other explosive hazardous materials

Classe di pericolosità dell'acqua (WGK)

WGK 3

Punto d’infiammabilità (°F)

Not applicable

Punto d’infiammabilità (°C)

Not applicable

Dispositivi di protezione individuale

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

Elenchi normativi

Forniamo informazioni su eventuali restrizioni prevalentemente per i prodotti chimici. Per altre tipologie di prodotto siamo in grado di fornire soltanto informazioni limitate. Nessuna segnalazione significa che nessuno dei componenti è citato in un elenco. È dovere dell’utilizzatore assicurarsi che il prodotto venga impiegato in maniera sicura e a norme di legge.

EU REACH Annex XVII (Restriction List)

CAS No.

Scegli una delle versioni più recenti:

Certificati d'analisi (COA)

Lot/Batch Number
MKCR9548
MKCR1441
MKCR1442
MKCR1440
MKCS4424

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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
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
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
J. Mol. Catal. A: Chem., 250, 70-70 (2006)
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Articoli

Oxidizing and Reducing Agents

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

Domande

1–2 di 2 domande  

  1. 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

      Utile?

  2. 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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