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BSI BS 4427-6:1974

Methods of test for sodium tripolyphosphate (pentasodium triphosphate) and sodium pyrophosphate (tetrasodium pyrophosphate) for industrial use -- Estimation of pyrophosphate content of sodium pyrophosphate
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BSI BS 4427-6:1974

Methods of test for sodium tripolyphosphate (pentasodium triphosphate) and sodium pyrophosphate (tetrasodium pyrophosphate) for industrial use -- Estimation of pyrophosphate content of sodium pyrophosphate

PUBLISH DATE 1974
BSI BS 4427-6:1974

Withdrawn: This standard is no longer used.

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.

SDO BSI: British Standards Institution
Document Number 4427-6
Publication Date June 7, 1974
Language en - English
Page Count
Revision Level
Supercedes
Committee CII/34
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