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ISO 1897-6:1977

Phenol, o-cresol, m-cresol, p-cresol, cresylic acid and xylenols for industrial use -- Methods of test -- Part 6: Test for absence of hydrogen sulphide (Cresylic acid and xylenols only)

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Kehtetu alates 27.05.2002
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ISO/R 1908:1971
simple test which cannot be used to obtain quantitative results. The principle of the method is based on formation of a brown colour on lead acetate paper due to reaction with any hydrogen sulphide present in a test portion. ISO 1897/6 replaces ISO Recommendation R 1908-1971.
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