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About This Item
Full Description
This document specifies two methods required for the identification of lignosulfonate by UV-Vis spectrophotometry (method A) and gravimetry (method B) in organo-mineral fertilizers. NOTE – Lignosulfonate, as a complexing agent, is a natural polymer produced as a by-product of the sulfite method for manufacturing paper from wood pulp in the paper industry. As a natural polymer, it presents a poorly defined and variable chemical structure. It is an intricate mixture of small- to moderate-sized polymeric compounds with sulfonate groups attached to the molecule, and diverse complexing capacity.
Document History
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DANSK DSF/FPRCEN/TS 17784-1
Organo-mineral fertilizers – Identification of complexing agents – Part 1: Method using UV-Vis spectrophotometry and gravimetry- Historical Version
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DANSK DS/CEN/TS 17784-1
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Organo-mineral fertilizers – Identification of complexing agents – Part 1: Method using UV-Vis spectrophotometry and gravimetry- Most Recent