we will prepare thiokol rubber from 1,2 dichloroethane and sodiumpolysulphide. The reaction is: . cl-CH 2 -CH 2 -cl + Na-S-S-Na + cl-CH 2 -CH 2 -cl--------------> -----(…----CH 2 -CH 2 -S-S-CH 2 -CH 2 ----) n -------- . ( Full Answer )

Thiokol was discovered in 1929 after a surprising and unplannedreaction between sodium polysulfide and ethylene dichloride.