BS 4427-7:1974
Withdrawn
Withdrawn
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.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 Estimation of tripolyphosphate (triphosphate) content of sodium tripolyphosphate
Available format(s)
Hardcopy , PDF
Language(s)
English
Published date
07-06-1974
Publisher
Withdrawn date
29-02-1992
€263.42
Excluding VAT
Gravimetric method using the tri(ethylenediamine) cobalt (II) chloride complex. Not applicable in the presence of metaphosphate but up to 6 per cent of pyrophosphate does not interfere.
| DevelopmentNote |
Obsolete
|
| DocumentType |
Standard
|
| Pages |
10
|
| PublisherName |
British Standards Institution
|
| Status |
Withdrawn
|
| 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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