Reference number
ISO 2888:1973
ISO 2888:1973
© ISO 2024
ISO 2888:1973
Furfural for industrial use — Determination of acidity to phenolphthalein — Volumetric method
Edition 1
1973-12
1973-12
Withdrawn
Abstract
Pretreatment of the water used, freshly boiled and cooled, by neutralization by addition of the standard volumetric sodium hydroxide solution or sulphuric acid solution as required. Addition of the test portion and titration with the standard volumetric sodium hydroxide solution in presence of phenolphthalein as indicator until the apperance of a pale pink colour.