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483044

Sigma-Aldrich

Potassium dichromate

99.98% trace metals basis

Synonym(s):

Potassium bichromate

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About This Item

Linear Formula:
K2Cr2O7
CAS Number:
7778-50-9
Molecular Weight:
294.18
EC Number:
231-906-6
MDL number:
MFCD00011367
UNSPSC Code:
12352302
PubChem Substance ID:
24871862
NACRES:
NA.23

Assay

99.98% trace metals basis

form

crystalline

reaction suitability

reagent type: oxidant

technique(s)

cell culture | mammalian: suitable

impurities

≤150.0 ppm Trace Metal Analysis

mp

398 °C (lit.)

SMILES string

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

InChI

1S/2Cr.2K.7O/q;;2*+1;;;;;;2*-1

InChI key

KMUONIBRACKNSN-UHFFFAOYSA-N

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Application

Potassium dichromate can be used as an oxidizing agent for the synthesis of polymers such as poly-O-phenylenediamine and polyanilines via oxidative polymerization.

Signal Word

Danger

Hazard Classifications

Acute Tox. 2 Inhalation - Acute Tox. 3 Oral - Acute Tox. 4 Dermal - Aquatic Acute 1 - Aquatic Chronic 1 - Carc. 1B - Eye Dam. 1 - Muta. 1B - Ox. Sol. 2 - Repr. 1B - Resp. Sens. 1 - Skin Corr. 1B - Skin Sens. 1 - STOT RE 1 Inhalation - STOT SE 3

Target Organs

Cardio-vascular system, Respiratory system

Storage Class Code

5.1B - Oxidizing 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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Synthesis and characterization of fluorine-substituted polyanilines
A Cihaner and A.M Onal
European Polymer Journal, 37, 1767-1772 (2001)
Chemical polymerization kinetics of poly-o-phenylenediamine and characterization of the obtained polymer in aqueous hydrochloric acid solution using K2Cr2O7 as oxidizing agent
SM Sayyah, et al.
International Journal of Polymer Science, 2014 (2014)
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