Al Khwarizmi Hall in the presence of the Head of Chemical Engineering Department. Assist.Prof.Dr.Jamal Mouna Ali Al-Rubaie, assistants, branch heads, and a number of lecture , students. The dissociation temperature of three types of saline solutions, sodium chloride, potassium bromide and sodium fluoride, was calculated at three concentrations (R134a + water + salt) 0,09, 0.17, 0,26) mol / kg. The Clavirone equation was used to calculate the dissociation temperature of the binary and trigonometric system depending on the practical data of disintegration. The result of the study was done using the case equation of Peng and Robinson, to find the effect of the compressive factor (z) on the dissociation temperature. The output of the binary system (143,8) kjol / m without z and with z (136.08) kjol / mol. The ratio of the calculated values of the tripartite system with the presence of sodium chloride at the three concentrations of non-z (146.7-154.1) kg / m and z (138,02-145,14) kg / mall. The rate of deviation between the two values (5, 8-5.7)%. The other two types of salts have the same results at a deviation of (0.88-0,129)% for the results of sodium chloride salt without z and deviation rate (0,818-0,129)% for the results of sodium chloride with z.