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ISO 3706:1976

Phosphoric acid for industrial use (including foodstuffs) -- Determination of total phosphorus(V) oxide content -- Quinoline phosphomolybdate gravimetric method
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ISO 3706:1976

Phosphoric acid for industrial use (including foodstuffs) -- Determination of total phosphorus(V) oxide content -- Quinoline phosphomolybdate gravimetric method

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Applicable to products whether or not they are homogeneous and whether or not they contain polyphosphoric acids. Specifies preliminary hydrolysis of the polyphosphoric acids by boiling in the presence of hydrochloric acid. The precipitation of the phosphoric acid is carried out in the form of quinoline phosphomolybdate in the presence of acetone. Filtration by a filter crucible, washing, drying and weighing of the precipitate.

SDO ISO: International Organization for Standardization
Document Number ISO 3706
Publication Date Not Available
Language en - English
Page Count
Revision Level
Supercedes
Committee ISO TC 47
Publish Date Document Id Type View
Not Available ISO 3706:1976 Revision