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Merck
CN

42019

Potassium dichromate

reference material for titrimetry, certified by BAM, >99.5%

Synonym(s):

Potassium bichromate

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About This Item

Linear Formula:
K2Cr2O7
CAS Number:
7778-50-9
Molecular Weight:
294.18
NACRES:
NA.24
PubChem Substance ID:
329756173
UNSPSC Code:
41116107
EC Number:
231-906-6
MDL number:
MFCD00011367

Key Documents

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grade

reference material

Quality Level

100

assay

>99.5%

technique(s)

titration: suitable

mp

398 °C (lit.)

format

neat

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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General description

Potassium dichromate is an oxidimetric standard produced under stringent conditions and measured with the highest possible precision. Its content determination and homogeneity assessment are performed using volumetric redox titration as the primary analysis method.
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This compound is listed in the SVHC (Substances of very high concern) candidate list of ECHA (European Chemicals Agency)

Application

It finds its use as a reference material for the standardization of volumetric solutions in redox titrations.

Features and Benefits

  • Available in a neat format in a secure glass bottle to ensure its stability for the entire shelf life until opened.
  • Traceable to NIST SRMs
  • High-quality offering accurate titer determinations
  • Accompanied by a certificate of analysis (CoA)

Analysis Note

Exact concentration, expiry date, traceability and detailed information on certification can be found on the certificate and certification report, included in each package. Content and expiry date on label.

signalword

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

5.1B - Oxidizing hazardous materials

wgk

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

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

Regulatory Information

易制爆化学品
危险化学品

This item has

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Certificates of Analysis (COA)

Lot/Batch Number
BCCM9145
BCCJ8132
BCCB9372
BCBV2009

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Raman spectroscopic study of oxidation of aniline and N-methylaniline with dichromate
Mazeikiene R, et al.
Journal of Molecular Structure, 1139, 333-337 (2017)
Changes in aquatic toxicity of potassium dichromate as a function of water quality parameters
Kikuchi M, et al.
Chemosphere, 170, 113-117 (2017)
Fu-Jun Liu et al.
Toxicological sciences : an official journal of the Society of Toxicology, 110(2), 307-318 (2009-06-03)
Werner syndrome is a premature aging disorder characterized by cancer predisposition that is caused by loss of the Werner syndrome protein (WRN) helicase/exonuclease DNA repair protein. Hexavalent chromium is an environmental carcinogen and genotoxicant that is associated with respiratory cancers
Eduardo Molina-Jijón et al.
Toxicology, 291(1-3), 93-101 (2011-11-26)
Deferoxamine (DFO) is a recognized iron chelator which has been shown to exert nephroprotection in models of toxic nephropathies. In the present work the potential protective effects of DFO against Cr(VI)-induced nephrotoxicity and oxidant stress were evaluated. Rats were injected
B Duarte et al.
Ecotoxicology and environmental safety, 83, 1-7 (2012-07-13)
The in situ reduction of Cr (VI) to its less toxic form Cr (III) may be a useful detoxification mechanism for phytoremediation. Using a hydroponics mesocosmos approach, we evaluated the ability of Halimione portulacoides to reduce and uptake Cr (VI)
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Global Trade Item Number

SKUGTIN
42019-50G-F04061835560523

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