Aim:The aim of this study was to evaluate the physicochemical properties( S.T, film thickness, dimension stability, PH and solubility) ofBoswellic Acid as a root canal sealer and compare it to four different commercial types of sealers(Endofill,AH plus, MTA fill-apex,Endosequense). Methods:The endodontic sealers investigated in this study were Endofill, AH plus, MTA fillapex, Endosequence and Boswellic Acid sealer. The sealers were mixed according to the manufacturer's instructions.For experimental BA sealer preparation Tricalcium silicate has been prepared by solid state reaction. Setting time, film thickness, dimensional stability, PH and solubility after setting for tested sealers were measured according to ANSI/ADA standards for dental root canal sealing materials by one examiner blinded to the identification of the materials.Five specimens from each group were tested and the means were statistically compared. Results: All results of tested sealers (Endofill, AH plus, MTA fill-apex, Endosequence and BA sealer) were matching  physical characteristics according to ANSI/ADA specification no. 57. Conclusion: The experimental sealer based on Boswellic Acid presented