Reference number
ISO 1897-3:1977
ISO 1897-3:1977
© ISO 2024
ISO 1897-3:1977
Phenol, o-cresol, m-cresol, p-cresol, cresylic acid and xylenols for industrial use — Methods of test — Part 3: Determination of neutral oils and pyridine bases
Edition 1
1977-04
1977-04
Retirada
Resumen
Specifies a volumetric method, after distillation, for determining of neutral oils, and a titrimetric method, after distillation, for determining of pyridine bases. The principle is based on distillation from an aqueous alkaline solution of a test portion. Measurement of the volume of neutral oils collected. Titration of the bases present in the aqueous distillate and in the oils with standard volumetric hydrochloric acid solution using methyl orange and xylene cyanol FF as indicator. An assembled distillation apparatus is shown in a figure.
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Anteriormente
RetiradaISO/R 1899:1971
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Ahora