SMT-DSChemical Name: 1-Sulfomethyl-5-thioltetrazole Disodium SaltCAS NO.:66242-82-8Formula: C2H2N4O3S2Na2SpecificationsAppearance: White or almost white crystalline powderIdentification: HPLC RT should correspond to that of standardSolubility: Freely soluble in waterMoisture: Between 7.0% and 10.0% w/w by KF methodAssay: Not less 98.0% on anhydrous basis by HPLC