This standard specifies two methods for determining the content of hexamethylenetetramine in phenolic resin. These two methods are equivalent. If other nitrogen-containing components are present in the phenolic resin, the Kjeldahl method described in Chapter 2 is not applicable. The perchloric acid method described in Chapter 3 is only applicable when there are no other alkaline or acidic additives in the resin.
HG/T 2755-1996 history
1996HG/T 2755-1996 Determination of hexamethylenetetramine content in phenolic resin