... resultPurity,%≥99.5Moisture≤0.30Water insolubles,%≤0.01Chloride(based on cl),%≤0.15Sulfate(based on SO4),%≤0.01Chromate(based on CrO4),%≤0.01Fe ... 250 °C to release oxygen and leave sodium chloride.II. SpecificationsProduct technical standardGB/T1618-2008ItemsUnitsHigh qualityTop-quality ... is synthesized from the electrolysis of a hot sodium chloride solution in a mixed electrode tank:NaCl + 3H2O ...