... . Burned in pure oxygen is generated sodium sulfate, sodium sulfide and sulfur.Industry indicators 1. Sodium thiosulfate /%: ≥ 99.02. Water insoluble /%: ≤ 0.013 ... from the scene, go to the air is fresh, well-ventilated place to rest;3, with sub-acid, amyl ... ...Choose us, Worth it!!!Please contact with Angela! hot sale HYPO/ Sodium Hyposulfite 99%/sodium thiosulfate/sodium hyposulphate photo grade