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).
WITHDRAWN
SRPS ISO 3947:2002
PUBLISHED
SRPS EN ISO 3947:2008
90.93
Standard confirmed
Oct 13, 1999