SOLUBILITY AND DENSITY FOR CYANAZINE PLUS ETHANOL PLUS WATER

The solubility of cyanazine in water (1) and ethanol (2) has been dete rmined over the temperature range 10-30 degrees C and the whole range of solvent water mass fractions W-1 = 0.0-1.0, and the densities of th e resulting saturated solutions have also been measured. At each tempe rature, the solubility of cyanazine increases with increasing mole fra ction x(2) of ethanol up to a local maximum at x(2) similar or equal t o 0.9. The density of saturated aqueous ethanol solutions of cyanazine decreases with increasing ethanol content over the whole range. The s olubility of cyanazine in aqueous ethanol at each temperature is corre lated by polynomial (W-1 = 0.3-1.0) and exponential (W-1 = 0.0-0.4) ex pressions while the density results are fitted to an exponential expre ssion.