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Full Description

Reduction of the sulphate in a test portion to sulphide, absorption of the evolved hydrogen sulphide in acetone and sodium hydroxide solution and titration with mercury (II) acetate using dithizone as indicator.

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Document History

  1. BS 4258-3:1989


    Methods of test for phosphoric acid (orthophosphoric acid) for industrial use-Methods of test for phosphoric acid (orthophosphoric acid) for industrial use. Determination of sulphate content

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  2. BS 4258-3:1975

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    Methods of test for phosphoric acid (orthophosphoric acid) for industrial use-Determination of sulphate content

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