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. 2022 May 27;94(23):8115–8119. doi: 10.1021/acs.analchem.2c00200

Table 5. pKa Values for Three Hexa-amino Cyclotriphosphazenes and the Indicators and Acid Used in Each Titration.

analyte pKadet (±0.1) indicators acid
IPPN (R = NHiPr) 11.65 dea, pyr barbituric
BnPN (R = NHBn) 9.80 mor,a dea barbituric
morphPN (R = N(CH2CH2)2O) 4.22 lut, izl saccharin
a

Morpholine.27