BS 4427-11:1983
Withdrawn
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
Methods of test for sodium tripolyphosphate (pentasodium triphosphate) and sodium pyrophosphate (tetrasodium pyrophosphate) for industrial use Separation by column chromatography and determination of the different phosphate forms
Hardcopy , PDF
English
28-02-1983
22-05-2026
Foreword
Cooperating organizations
Method
1 Scope
2 Principle
3 Reagents
4 Apparatus
5 Procedure
6 Expression of results
7 Test report
Appendix
A Determination of phosphorus (V) oxide in the eluates
obtained by chromatographic separation of a column
Table
1 Concentrations of standard matching solutions and
corresponding optical path lengths of cells
Figures
1 Ion-exchange column with dropping funnel
2 Ion-exchange colume with typical syphon device
3 Typical graph obtained during the determination of
the elution conditions
Determination of ortho-, pyro- and tripolyphosphates, and higher condensed phosphate forms, in the absence of $7Itetra$7R- and $7Ipenta$7R-metaphosphates.
| Committee |
CII/34
|
| DevelopmentNote |
Supersedes 82/52542 DC. (08/2005) Reviewed and confirmed by BSI, December 2011. (11/2011)
|
| DocumentType |
Standard
|
| Pages |
14
|
| PublisherName |
British Standards Institution
|
| Status |
Withdrawn
|
Withdrawn:This standard is no longer used
| Standards | Relationship |
| UNE-EN ISO 12625-4:2023 | Identical |
This standard has been withdrawn and is no longer current. No replacement edition is available.
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