含量   min                    98%                98%                    95%  

挥发份 max                     1%                 1%                     1%

熔点   min                   155 ℃               125 ℃                  180 ℃

粒径 98%<                    10 μm              10 μm                  10 μm

分子量                        233.10               164.21                   264.33

溶解度（水）                  0.042 g/l              3.85 g/l                  25.9 g/l

LD50oral,rat                   4159mg/kg            6400mg/kg               6400mg/kg