BSI - BS 4258-3
Methods of test for phosphoric acid (orthophosphoric acid) for industrial use. Determination of sulphate content
inactive
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| Organization: | BSI |
| Publication Date: | 30 September 1975 |
| Status: | inactive |
| ICS Code (Acids): | 71.060.30 |
scope:
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.
Document History
September 29, 1989
Methods of Test for Phosphoric Acid (Orthophosphoric Acid) for Industrial Use Part 3: Determination of Sulphate Content
Applicable to sulphate contents between 1 and 4000 mg/kg.
BS 4258-3
September 30, 1975
Methods of test for phosphoric acid (orthophosphoric acid) for industrial use. Determination of sulphate content
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...