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  • BSI
    BS 4427-11:1983 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
    Edition: 1983
    $318.10
    / user per year

Description of BS 4427-11:1983 1983

This Part of BS 4427 describes a method for the separation and the determination of the different phosphate forms in sodium tripolyphosphate (pentasodium triphosphate) and sodium pyrophosphate (tetrasodium diphosphate) for industrial use.

The procedure specified allows the selective determinations of orthophosphate (Na2HPO4), of pyrophosphate (Na4P2O7) and of tripolyphosphate (Na5P3O10), and also the evaluation of the total content of more condensed forms of phosphates in the absence of tetrametaphosphates and pentametaphosphates.

NOTE 1 In practice, tetrametaphosphates and pentametaphosphates are not usually present in commercial tripolyphosphates and pyrophosphates.

NOTE 2 Although the procedure can separate orthophosphate, its determination is not possible if the content is lower than 0.1 % (m/m); in this case its determination should be carried out by the method specified in BS 4427-8.

NOTE 3 The titles of the publications referred to in this Part of this British Standard are listed on the inside back cover.



Determination of ortho-, pyro- and tripolyphosphates, and higher condensed phosphate forms, in the absence of $7Itetra$7R- and $7Ipenta$7R-metaphosphates.

Standard NumberBS 4427-11:1983
TitleMethods 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
StatusUnder Review
Publication Date1983-02-28
Technically Equivalent National Standard OfISO 3358:1979
DescriptorsPyrophosphates, Phosphorus pentoxide, Polyphosphates, Sodium inorganic compounds, Complexing methods, Design, Orthophosphates, Spectrophotometry, Phosphates, Chemical analysis and testing, Testing conditions, Dimensions, Column chromatography, Test equipment, Industrial, Determination of content
ICS71.060.50 Salts
CommitteeCII/34
ISBN0 580 13079 7
PublisherBSI
Pages14



About BSI

BSI Group, also known as the British Standards Institution is the national standards body of the United Kingdom. BSI produces technical standards on a wide range of products and services and also supplies certification and standards-related services to businesses.
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