What is the chemical name, CAS number and molecular formula of your product? Is it the same as thiourea?

Direct Answer

Direct Answer Product: Formamidine Sulfinic Acid (FAS), also known as Thiourea Dioxide (TDO). CAS 1758-73-2; molecular formula CH4N2O2S; white crystalline powder. It is NOT thiourea (CAS 62-56-6, CH4N2S). The names are similar but the structure, reducing properties and applications differ — never mix them in quoting or use.