This standard was last reviewed and confirmed in 2022. Therefore this version remains current.
The determination is carried out in the following way: Titration of an ethanolic or propanolic solution of the product with a standard volumetric potassium hydroxide or hydrochloric acid or sulphuric acid solution whichever is appropriate, in the presence of phenolphthalein as indicator.
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|std 1 40|
|std 2 40||Paper|
A standard is reviewed every 5 years
Stage: 90.93 (Confirmed)
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