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. 2008 Mar 28;9(2):635–638. doi: 10.1208/s12249-008-9068-2

Table III.

Weight Changes on Exposure to Typical Drying Temperatures and Extremes of Humidity

Candidate Form Hygrodynamics, Weight Change %
Drying 24 h at 49°C 1 week at 24°C
11% RH 83% RH
Free base −0.18 +2.60 0.0
Phosphate hydrate +0.60 −0.70 +1.76
Fumarate −0.03 +0.04 +0.03
Maleate −0.11 +2.16 +0.04

+/− Signs added for clarity