... , transparent,viscous liquid, mainly usded for dispersant,emulsifier,detergent Etc. Low Molecular Weight Polyisobutylene (High Reactive Type) TrademarkIndex UNIT Test Method ... 100°C,cstASTM D4452204801700 Flash Point°C ASTM D-92210215220 Density 15°C,g/cm3 ASTM D-40520.890.900.91 ... D-6181≤4≤4≤4Na.K.FeppmASTM D2849222 HRD-13H Low Molecular Weigh Polyisobutylene