IEC 62321-7-2:2017 (EN-FR)

Determination of certain substances in electrotechnical products - Part 7-2: Hexavalent chromium - Determination of hexavalent chromium (Cr(VI)) in polymers and electronics by the colorimetric method

Standard Details

IEC 62321-7-2:2017 describes procedures to measure hexavalent chromium, Cr(VI), quantitatively in samples of polymers and electronics. This method employs organic solvent to dissolve or swell the sample matrix, followed by an alkaline digestion procedure to extract Cr(VI) from samples. Studies have shown that organic;alkaline solution is more effective than acidic solution in extracting Cr(VI) from soluble and insoluble samples. Minimal reduction of Cr(VI) to Cr(III) or oxidation of Cr(III) to Cr(VI) occurs under alkaline conditions. The first edition of IEC 62321:2008 was a 'stand-alone' standard that included an introduction, an overview of test methods, a mechanical sample preparation as well as various test method clauses. This first edition of IEC 62321-7-2 is a partial replacement of IEC 62321:2008, forming a structural revision and generally replacing Annex C. IEC 62321-7-2 is the final replacement part of the corresponding clauses in IEC 62321:2008.
It has the status of a horizontal standard in accordance with IEC Guide 108 .

General Information

Status : ACTIVE

Standard Type: Main

Document No: IEC 62321-7-2:2017 (EN-FR)

Document Year: 2017

Pages: 35

Edition: 1.0

Section Volume:
TC 111 Environmental standardization for electrical and electronic products and systems

ICS:
31.020 Electronic components in general
71.040.50 Physicochemical methods of analysis

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IEC 62321-7-2:2017 (EN-FR)

IEC 62321-7-2:2017 (EN-FR)

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