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  • ISO 3706:1976

    Current The latest, up-to-date edition.

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

    Available format(s):  Hardcopy, PDF, PDF 3 Users, PDF 5 Users, PDF 9 Users

    Language(s):  English, French

    Published date:  01-11-1976

    Publisher:  International Organization for Standardization

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    Abstract - (Show below) - (Hide below)

    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.

    General Product Information - (Show below) - (Hide below)

    Committee ISO/TC 47
    Document Type Standard
    Product Note THIS STANDARD ALSO REFERS TO ISO 847,ISO 849
    Publisher International Organization for Standardization
    Status Current

    Standards Referenced By This Book - (Show below) - (Hide below)

    DIN EN 974:2004-01 Chemicals used for treatment of water intended for human consumption - Phosphoric acid; German version EN 974:2003
    I.S. EN 1197:2014 CHEMICALS USED FOR TREATMENT OF WATER INTENDED FOR HUMAN CONSUMPTION - MONOZINC PHOSPHATE SOLUTION
    DIN EN 1197:2001-03 CHEMICALS USED FOR TREATMENT OF WATER INTENDED FOR HUMAN CONSUMPTION - MONOZINC PHOSPHATE SOLUTION
    DIN EN 1197:2014-06 CHEMICALS USED FOR TREATMENT OF WATER INTENDED FOR HUMAN CONSUMPTION - MONOZINC PHOSPHATE SOLUTION
    UNI EN 1197 : 2014 CHEMICALS USED FOR TREATMENT OF WATER INTENDED FOR HUMAN CONSUMPTION - MONOZINC PHOSPHATE SOLUTION
    UNE-EN 1197:2015 Chemicals used for treatment of water intended for human consumption - Monozinc phosphate solution
    EN 974:2003 Chemicals used for treatment of water intended for human consumption - Phosphoric acid
    BS EN 974:2003 Chemicals used for treatment of water intended for human consumption. Phosphoric acid
    BS EN 1197:2014 Chemicals used for treatment of water intended for human consumption. Monozinc phosphate solution
    EN 1197:2014 Chemicals used for treatment of water intended for human consumption - Monozinc phosphate solution
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