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>ISO Standards>ISO 743:1976-Sodium carbonate for industrial use-Determination of sulphate content-Barium sulphate gravimetric method
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immediate downloadReleased: 1976
ISO 743:1976-Sodium carbonate for industrial use-Determination of sulphate content-Barium sulphate gravimetric method

ISO 743:1976

Sodium carbonate for industrial use

CURRENCY
42 EUR
Standard´s number:ISO 743:1976
Pages:3
Edition:1
Released:1976
Language:English
DESCRIPTION

ISO 743:1976


The principle in dissolution of a test portion and separation of the insoluble matter. Precipitation of sulphate as barium sulphate in dilute hydrochloric acid medium. Separation of the precipitate obtained and ignition at 800 °C +- 25 °C and weighing. The method is applicable to products having a sodium sulphate content equal to or greater than 0,01 % (m/m). Replaces ISO Recommendation R 743-1968.
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