Table 4.

Melting Point Comparison.

Salt (*) or Co-crystal	M.P.of Co-crystallizing Agent	M.P.of Salt(*)or Co-crystal	M.P.of Diclofenac
(DC)·(3-aminopyridine)*	55–58 °C	108–112°C*	171–173 °C
(DC)·(2-aminopyridine)*	47–50 °C	73–74 °C*	171–173 °C
(DC)·(AMP)	151–153 °C	173–174 °C	171–173 °C
(DC)·(ACMP)	182–183 °C	169–172 °C	171–173 °C
(DC)·(3-hydroxypyridine)	126–129 °C	153–156 °C	171–173 °C
(DC)·(2-amino-4-hydroxy-6-methylpyrimidine)	>300 °C	>160 °C [sublimes]	171–173 °C
(DC)·(AP)	125–127 °C	168–172 °C	171–173 °C
(DC)·(4,4′-bipyridyl)	108–111 °C	155–157 °C	171–173 °C
(DC)·(2-amino-5-chloropyridine)	132–135 °C	150–154 °C	171–173 °C
(DC)·(4-chloro-2,6-diaminopyrimidine)	196–199 °C	155–160 °C	171–173 °C
(DC)·(2-amino-3,5-dibromopyridine)	98–100 °C	145–150 °C	171–173 °C