National foreword<br>National Annex NA (informative) - Bibliography<br>Foreword<br>Introduction<br>1 Scope<br>2 Normative references <br>3 Description <br>4 Purity criteria <br>5 Test methods <br>6 Labelling - Transportation - Storage <br>Annex A (informative) - General information <br> on polyphosphates<br>Bibliography