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ISO 3706:1976

$13.00

Acide phosphorique à usage industriel (y compris les industries alimentaires) — Dosage de l’oxyde de phosphore (V) total — Méthode gravimétrique au phosphomolybdate de quinoléine

Published By Publication Date Number of Pages
ISO 1976-11 8
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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.

ISO 3706:1976
$13.00