::I reverted your safety information on Sb2O3.  This information is already in the cited MSDS and more authoritatively presented, and the general pattern has been to follow the content patterns employed by other encyclopedia, not to compete with MSDS's. If you want to discuss a new concept for presenting data, it is probably a good idea to discuss ideas on the page Wikipedia talk:WikiProject Chemicals.  It can take a few hours to a few days for a discussion, but at least you get some feedback.  Many concepts have been debated previously, so it is possible that progress can be achieved.  Cheers,