Undecathionic acid(6CI,9CI) is a chemical compound registered under CAS number 63270-32-6, with the molecular formula H2O6S11 and a molecular weight of about 450.67 g/mol. FireTardant supplies Undecathionic acid(6CI,9CI) for laboratory research and bulk production; product code 1270987. Send an inquiry for purity, packaging, price and lead time.