In line with increased demands on safe management and disposal of asbestos-containing wastes(ACWs), we have investigated a feasibility of thermochemical technique on approximately 17% of chrysotile-containing roofing sheet or slate (ACS), in which the 5N sulfuric acid-digestive destruction was incorporated with 10 to 24-hour heating at 100oC. Results by the X-ray diffraction (XRD) and the polarized light microscopy (PLM) have clearly shown that raw chrysotile asbestos was converted to non-asbestiform with no crystallinity by the low temperature thermoche mical treatment. As a replacement of pricy sulfuric acid, a waste sulfuric acid discharged from a semiconductor manufacturing process was reused for an asbestos-fracturing purpose, and it was found that similar removals when using commercial sulfuric acid could be obtained under the same experimental conditions, brightening an applicability of thermochemical treatment of ACWs at practical perspectives. A thermodynamic understanding based on extraction rates of the magnesium and sillica from a chrysotile structure has revealed that a destruction of chrysotile by aciddigestion is greatly influenced by reaction temperatures, showing 20.6-fold increases of a reaction rate by raising the temperature 50oC to 100oC, and a rate-limiting step of overall destruction rate lies on a breaking of sillion-oxid e layer. This study is meaningful in showing the low temperature thermochemical treatment can be feasible as one of ACWs-treating methods and the results of the study would give insights to the waste management guidelines /regulations related to ACWs in many countries as well as the South Korea.