formaldehyde bisulfite is a chemical compound registered under CAS number 75-92-3, with the molecular formula CH4 O4 S and a molecular weight of about 112.1 g/mol. It is also known as Hydroxymethanesulfonic acid. ChemRoots supplies formaldehyde bisulfite for laboratory research and bulk production; product code 1052804. Send an inquiry for purity, packaging, price and lead time.