Codes & Standards - Purchase
ISO 6842:1989
Surface active agents -- Sulfated ethoxylated alcohols and alkylphenols -- Determination of total active matter content
SKU: iso_013349_105546
Published by ISO
Publication Year 1989
2 Edition
2 pages
Product Details
A test portion is boiled under reflux with ethanol in the presence of sodium sulphate. The solution is filtrated, the filtrate evaporated, and the residue weighed. Any sodium chloride present is determined by dissolution of the residue in aqueous acetone and titration with a standard volumetric silver nitrate solution. The mass of the residue is corrected for the sodium chloride content.