WASHINGTON/DETROIT (Reuters) – Takata Corp will “rapidly” reduce production of a volatile chemical that has been linked to ruptured air bag inflators, a company executive told U.S. lawmakers on Tuesday. The chemical, ammonium nitrate, “appears to be one of the factors” contributing to inflator ruptures linked to six deaths and hundreds of injuries, Kevin Kennedy, executive vice president of Takata subsidiary TK Holdings, said. Kennedy told a House subcommittee that Takata has “alternate propellants now with guanidine nitrate.