I found two resources to find those physical properties and they are:
1) http://rushim.ru/books/spravochniki/handbook-chemistry-and-physics.pdf
2) https://www.slac.stanford.edu/BFROOT/www/Detector/Backgrounds/BkG4Sim/Planning/Validations/neutronCounters/04_02_85.pdf
I want to find the physical properties such as flash point, flammability limit, heat of vaporization, heat of combustion, density, melting point, boiling point, etc. All the important physical properties that I need to have before designing a plant.
There are also other physical properties that I found from PubChem, then I realized that the site had doubtful information because it gave me the same value of physical properties for two different compounds.