Equilibrium solubility of 7-chloro-quinaldine, 7-chloro-quinaldine L-tartrate or 7-chloro-quinaldine p-nitrophthalate in methanol, ethanol, n-propanol, isopropanol, n-butanol, isobutanol and acetone was measured by static gravimetric method at temperatures from 283.15 K to 323.15 K under p = 101.2 kPa. Within the studied temperature, the solubility of these three compounds in the solvents increased with a rise of temperature. The sequence of solubility of 7-chloro-quinaldine in these solvents (high to low) is acetone > isopropanol > isobutanol > methanol > ethanol > n-propanol > n-butanol. The solubility of 7-chloro-quinaldine tartrate in studied solvents obeys the following order: acetone > isopropanol > isobutanol > ethanol > n-propanol > n-butanol > methanol. While 7-chloro-quinaldine p-nitrophthalate + solvents, it ranked as: isobutanol > n-butanol > isopropanol > acetone > n-propanol > ethanol > methanol. The modified Apelblat equation was used to correlate the solubility values in neat solvents. The maximum values of root-mean-square deviation (RMSD) and relative average deviation (MD) were 0.83 x 10(4) and 0.93%, respectively. Compared with the results of modified Apelblat equation, the calculated solubility provided good results with the experimental data. The experimental solubility values would be very helpful for application of 7-chloro-quinaldine, 7-chloro-quinaldine L-tartrate or 7-chloro-quinaldine p-nitrophthalate in industry. (C) 2019 Published by Elsevier Ltd.