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.
Status: Under developmentPublication date: 2023-07
Edition: 2Number of pages: 3
Technical Committee: ISO/TC 61/SC 5 Physical-chemical properties
- ICS :
- 71.080.30 Organic nitrogen compounds
This standard contributes to the following Sustainable Development Goal:
ISO/PRF 8112Stage: 50.20
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