Become chemistry oil at present the broad has its properties mission of the Academy and applied like the rest of science in transport and industries of different. The basis of the importance of chemistry oil has signed a optional on the book of the properties of crude oil Yemeni especially characteristics physicochemistry. I am the oldest this effort first I hope to have the beginning of the work of a new, whether in this area or other areas at the same time, I have made a library's scientific and some of the lack to it.