Ammonium Peroxydisulfate

(NH4)2S2O8 [7727-54-0] H8N2O8S2 (MW 228.20) InChI = 1S/2H3N.H2O8S2/c;;1-9(2,3)7-8-10(4,5)6/h2*1H3;(H,1,2,3)(H,4,5,6) InChIKey = ROOXNKNUYICQNP-UHFFFAOYSA-N K2S2O8 [7727-21-1] K2O8S2 (MW 270.32) InChI = 1S/2K.H2O8S2/c;;1-9(2,3)7-8-10(4,5)6/h;;(H,1,2,3)(H,4,5,6)/q2*+1;/p-2 InChIKey = USHAGKDGDHPEEY-UHFFFAOYSA-L Na2S2O8 [7775-27-1] Na2O8S2 (MW 238.11) InChI = 1S/2Na.H2O8S2/c;;1-9(2,3)7-8-10(4,5)6/h;;(H,1,2,3)(H,4,5,6)/q2*+1;/p-2 InChIKey = CHQMHPLRPQMAMX-UHFFFAOYSA-L (oxidizing agent for many functional groups;1 phenols form p-hydroxysulfate ester salts (Elbs oxidation), while arylamines give the o-aminosulfate esters (Boyland–Sims oxidation)1m) Physical Data: E° = −1.92, −1.94 V.2 Solubility: sol water, 20 °C: ammonium salt, 2.5 M; potassium salt, 0.17 M; sodium salt, 2.3 M; reasonable solubility in aqueous mixtures with acetonitrile, the lower alcohols, and acetone. Quaternary ammonium salts of peroxydisulfate show much greater solubility in organic solvents.3 Form Supplied in: the three salts are commercially available as colorless crystalline solids. Analysis of Reagent Purity: the commercial materials are typically 98–99% pure and may be analyzed by standard iodometric techniques. Handling, Storage, and Precautions: the sodium and potassium salts are very stable as dry solids, the ammonium salt less so.4 Aqueous solutions undergo slow decomposition even at rt.4 Cases of asthma and skin rashes have been reported among constant users such as hairdressers and industrial workers.