Assessing prediction models on calculating the flash point of organic acid, ketone and alcohol mixtures

Flash point of six flammable binary mixtures, acetic acid + Pentan-1-ol, Pentan-1-ol + n-hexanol, acetic acid + n-hexanol, acetic acid + cyclohexanon, Pentan-1-ol + cyclohexanon, n-hexanol + cyclohexanon and ternary mixture of acetic acid + n-hexanol + cyclohexanon were measured using the tag close cup apparatus by equilibrium test method. In this study attempt has been made to assess prediction models including Liaw model, Wickey model and Catoire model to calculate the flash point of these mixtures. UNIFAC model is employed in the mixture flash point predictions, in non ideal assumption. The results revealed that the Liaw et al. model can predict the flash point of studied mixtures with good accuracy. Also UNIFAC model when no experimental vapor–liquid equilibrium data are available is applicable for taking account non ideal assumptions in flash point calculations.