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Home > Product > Material & Chemicals > Micro/NanoElectronics > Chromium(iii)acetate hydroxide

Chromium(iii)acetate hydroxide | CAS Number: 39430-51-8

Catalog Number
ACM39430518
Product Name
Chromium(iii)acetate hydroxide
Structure
CAS Number
39430-51-8
Synonyms
CHROMIUM ACETATE, BASIC;CHROMIUM (III) ACETATE, BASIC;CHROMIUM(III) ACETATE HYDROXIDE;Acetic acid, chromium salt, basic;Chromium(III)acetatehydroxide,Cr24%;CHROMIUMACETATEHYDROXIDE;Chromic acetate, basic;Chromium(III) acetate hydroxide, Cr 24%
Molecular Weight
603.31
Molecular Formula
C14H23Cr3O16
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1Degradation process of lead chromate in paintings by Vincent van Gogh studied by means of synchrotron X-ray spectromicroscopy and related methods. 2. Original paint layer samples.

Monico L1, Van der Snickt G, Janssens K, De Nolf W, Miliani C, Dik J, Radepont M, Hendriks E, Geldof M, Cotte M.

Anal Chem. 2011 Feb 15;83(4):1224-31. doi: 10.1021/ac1025122.

The darkening of the original yellow areas painted with the chrome yellow pigment (PbCrO(4), PbCrO(4)·xPbSO(4), or PbCrO(4)·xPbO) is a phenomenon widely observed on several paintings by Vincent van Gogh, such as the famous different versions of Sunflowers. During our previous investigations on artificially aged model samples of lead chromate, we established for the first time that darkening of chrome yellow is caused by reduction of PbCrO(4) to Cr(2)O(3)·2H(2)O (viridian green), likely accompanied by the presence of another Cr(III) compound, such as either Cr(2)(SO(4))(3)·H(2)O or (CH(3)CO(2))(7)Cr(3)(OH)(2) [chromium(III) acetate hydroxide]. Read More

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