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ISO 8112:1984

Caprolactam for industrial use -- Determination of colour of 50 % aqueous caprolactam solution, expressed in Hazen units (platinum-cobalt scale) -- Spectrometric method

General information

Withdrawn from 17.07.2023
Directives or regulations
None

Standard history

Status
Date
Type
Name
17.07.2023
Main
01.11.1984
Main
The absorbance of a 50 % aqueous caprolactam solution is spectrometrically measured at a wavelength of 390 nm and an optical path length of 50 mm. The result is expressed in Hazen units by multiplying the absorbance measured by a constant factor equal to 150. This factor is derived from measurements of absorbance of diluted standard solutions of platinum-cobalt scale.

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Standard monitoring