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ISO 7059:2023PublishedCaprolactam for industrial use — Determination of absorbance at a wavelength of 290 nmISO 8112:2023PublishedCaprolactam for industrial use — Determination of colour of 50 % aqueous caprolactam solution, expressed in Hazen units (platinum-cobalt scale) — Spectrometric methodISO 8660:2002PublishedPlastics — Determination of permanganate absorption number of caprolactam — Spectrometric methodISO 1592:1977WithdrawnUrea for industrial use — Determination of nitrogen content — Titrimetric method after distillationISO 1593:1977WithdrawnUrea for industrial use — Determination of alkalinity — Titrimetric methodISO 1594:1977WithdrawnUrea for industrial use — Determination of ashISO/R 1595:1970WithdrawnUrea for industrial use — Determination of iron content — 2,2'- Bipyridyl photometric methodISO 2749:1973WithdrawnUrea for industrial use — Measurement of the pH of a solution of urea of conventional concentration (100 g/l) — Potentiometric methodISO 2750:1974WithdrawnUrea for industrial use — Measurement of colour in Hazen units (platinum-cobalt scale) of a urea-formaldehyde solutionISO 2751:1973WithdrawnUrea for industrial use — Determination of the buffer coefficient — Potentiometric methodISO 2752:1973WithdrawnUrea for industrial use — Measurement of the variation of pH in the presence of formaldehyde — Potentiometric methodISO 2753:1973WithdrawnUrea for industrial use — Determination of water content — Karl Fischer methodISO 2754:1973WithdrawnUrea for industrial use — Determination of biuret content — Photometric methodISO 4274:1977WithdrawnUrea for industrial use — Determination of biuret content — Flame atomic absorption and photometric absorption methodsISO 7059:1982WithdrawnCaprolactam for industrial use — Determination of absorbance at a wavelength of 290 nmISO 7060:1982WithdrawnCaprolactam for industrial use — Determination of crystallizing pointISO 8112:1984WithdrawnCaprolactam for industrial use — Determination of colour of 50 % aqueous caprolactam solution, expressed in Hazen units (platinum-cobalt scale) — Spectrometric methodISO 8660:1988WithdrawnCaprolactam for industrial use — Determination of permanganate index — Spectrometric methodISO 8661:1988WithdrawnCaprolactam for industrial use — Determination of volatile bases content — Titrimetric method after distillation