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2818688 
Technical Report 
Determination of the tricresol preservative in the medicinal form of heparin 
Sapleva, VT; Kolochevskaya, MN; Pakhomov, VP 
1982 
IPA/83/515042 
Chem 
USSR 
293-296 
English 
IPA COPYRIGHT: ASHP A colorimetric method for the determination of tricresol (m-, o- and p-cresol combination) in heparin injectable solutions is described. Diazo coupling with the diazonium salt of sulfanilic acid in an alkaline medium was used to prepare a colored compound. The utility of the method was demonstrated by recoveries in the range of 97.52-102.52% for solutions of known concentration.