BS 4427-6:1974
Withdrawn
Methods of test for sodium tripolyphosphate (pentasodium triphosphate) and sodium pyrophosphate (tetrasodium pyrophosphate) for industrial use Estimation of pyrophosphate content of sodium pyrophosphate
Hardcopy , PDF
English
06-07-1974
05-22-2026
NO CONTENTS SECTION
Potentiometric method after conversion of the tetrasodium pyrophosphate to disodium dihydrogen pyrophosphate and precipitation of the pyrophosphate with liberation of sulphuric acid. Applicable to products containing at least 90 per cent of tetrasodium pyrophosphate and in the absence of more condensed forms of phosphate.
| Committee |
CII/34
|
| DevelopmentNote |
Supersedes 72/55290 DC. (08/2005) Reviewed and confirmed by BSI, December 2011. (11/2011)
|
| DocumentType |
Standard
|
| Pages |
8
|
| PublisherName |
British Standards Institution
|
| Status |
Withdrawn
|
Withdrawn:This standard is no longer used
| BS 4427-10:1976 | Methods of test for sodium tripolyphosphate (pentasodium triphosphate) and sodium pyrophosphate (tetrasodium pyrophosphate) for industrial use Determination of total phosphorus (V) oxide content: quinoline phosphomolybdate gravimetric method |
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| BS 1792:1960 | One-mark volumetric flasks |
| BS 2586:1965 | Glass electrodes for the measurement of pH |
| BS 3145(1976) : LATEST | |
| BS 3422(1961) : LATEST | LABORATORY DEFLECTION pH METERS |
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