Hydrolysis of the product by boiling hydrochloric acid, and coagulation of the insoluble products by cooling. Separation by filtration, drying and isolation the wanted matter by solvent extraction. The method applies to contents less than 1,5 % (m/m).
Edition: 1 (Monolingual) ICS: 67.180.20 Status: Published Stage: 90.60 (2013-06-19) TC/SC: ISO/TC 93 Number of Pages: 2
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