Reference number
ISO 753-9:1981
ISO 753-9:1981
© ISO 2025
ISO 753-9:1981
Acetic acid for industrial use — Methods of test — Part 9: Visual limit test for inorganic sulphates
Edition 1
1981-10
1981-10
Withdrawn
Abstract
Specifies a method for a visual comparison of the turbitity obtained by adding a barium chloride solution to a solution of a test portion acidified with hydrochloric acid, with that similarly obtained from a sulphate solution of known concentration. Using a test portion of 100 g, the method is applicable directly to products having inorganic sulphate contents in the range 0,001 % (m/m) to 0,1 % (m/m). This range can be extended by adjusting the mass of the test portion. It has also been approved by the International Union of Pure and Applied Chemistry (IUPAC). ISO 753/1 to ISO 753/11 cancel and replace ISO Recommendation R 753-1968.
Life cycle
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Previously
WithdrawnISO/R 753:1968
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Now