... (cm3/g) 2.0-3.0Total Fe mg/kg<500UsageMain used in tires,and also translucent, colored plastic soles/othersXD-0002 Apperance ... in Radial tire,also used in soles,rubber tube,rubber tape,Solid tire,Cycle tire,and Colored tires Apperance white powder SiO2 ... on sieve less than 0.03UsageMain used in High Transparent rubber products\ soles. Also can used in Medicine,food,Feed additives,Pesticides ...