ISO 7059:1982
Caprolactam for industrial use; Determination of absorbance at a wavelength of 290 nm

Standard No.

ISO 7059:1982

Release Date

1982

Published By

International Organization for Standardization (ISO)

Status

Be replaced 2023-07

Replace By

ISO 7059:2023

Latest

ISO 7059:2023

Scope

The spectrometric measurement of the absorbance of a 50 % caprolactam water solution is carried out at a wavelength of 290 nm. The absorbance, expressed in relation to an optical path length of 1 m, is given by a specified formula in which A_O is the correction for the difference in absorbances of the cells; A₁ is the absorbance of the test solution, and 1 is the optical path length, in centimetres, of the cell.

ISO 7059:1982 history

• 2023 ISO 7059:2023 Caprolactam for industrial use — Determination of absorbance at a wavelength of 290 nm
• 1982 ISO 7059:1982 Caprolactam for industrial use; Determination of absorbance at a wavelength of 290 nm