Publication details
| Publication CODE |
Title |
| NBN EN 62321-7-2:2017 (2017-06) |
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 |
|
25.00 €
|
3. |
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.
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| Class |
C
|
Available files
ATTENTION: Belgian registered standards (NBN EN or NBN HD) are generally
only available in English or French. Only the cover page is translated
and the document itself is in English or in French.
Very important notice: 98% of the text of the NBN EN 55XXX,
NBN EN 6XXXX comes from the IEC text which is NOT included.
This text can be ordered here:
IEC 62321-7-2:2017.
For the series NBN EN 50XXX, the standards are however complete.
|
DE version
|
EN version
|
FR version
|
|
Status
| Status |
Registered trilingual Belgian standard EN or FR or DE |
| Situation |
Currently active
Partly replaces
NBN EN 62321:2009
|
|
Origin
| Committee |
TC 111
Environmental standardization for electrical and electronic products and systems
|
| Responsible |
De heer VAN HECKE Luk
|
Approval
| BEC Approval |
2017-05-02 |
| NBN Approval |
2017-07-19 |
| Registration |
176820 |
| ICS-Code (International Standards Classification) |
31.020
, 71.040.50
|
| NBN Status |
New |
|
| Date of ratification (d.o.r.) |
2017-05-02 |
| Date of availability (d.a.v.) |
2017-06-23 |
| Date of announcement (d.o.a.) |
2017-08-02 |
| Date of publication (d.o.p.) |
2018-02-02 |
| Date of withdrawal former edition (d.o.w.) |
2020-05-02 |
|
Correspondences with international standards
| Relation |
International standard |
Date |
| is identical to |
EN 62321-7-2:2017
|
2017-06-23 |
| is identical to |
IEC 62321-7-2:2017
|
2017-03-28 |
Relations to belgian/foreign publications
| Type |
Origin |
Code |
Date |
| Standard |
Belgium |
EN 62321-1 |
|
| Standard |
Belgium |
EN ISO 3696 |
|
|
