| Publication CODE |
Title |
| IEC 62321-7-2:2017 (2017-03) |
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 |
| |
| Price Excl. VAT |
Total number of pages, tables and drawings |
|
122.00 €
|
35. |
Description
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.
|
| Class |
C990
(IEC PUBLICATIONS IEC PUBLICATIONS)
|
| Status |
IEC PUBLICATION |
| Situation |
Currently active
|
|
| Committee |
TC 111
Environmental standardization for electrical and electronic products and systems
|
| Responsible |
De heer VAN HECKE Luk
|
| BEC Approval |
2017-03-28 |
| ICS-Code (International Standards Classification) |
31.020
, 71.040.50
|
| NBN Status |
New |
|
| IEC publication date |
2017-03-28 |
| IEC stability date |
2020-12-31 |
| IEC file modification date |
2017-03-28 |
| IEC last modification date |
2020-04-06 |
|
