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Sodium permanganate is the inorganic compound with the formula NaMnO₄. It is closely related to the more commonly encountered potassium permanganate, but it is generally less desirable, because it is more expensive to produce. It is mainly available as the monohydrate. This salt absorbs water from the atmosphere and has a low melting point. Being about 15 times more soluble than KMnO₄, sodium permanganate finds some applications where very high concentrations of MnO₄⁻ are sought.
Elemental sulfur reduction in gypsum
PCT designated stageWO2026115463A1Calcium/strontium/barium sulfatesPotassium manganateSodium permanganate
This invention generally relates to a method for the reduction of elemental sulfur content in gypsum, and by extension, products that are derived from it such as gypsum wallboard. More specifically, and in one embodiment, this invention relates to using the effectiveness of potassium permanganate or sodium permanganate in reducing elemental sulfur content in a gypsum wallboard or its precursor materials.
Owner:PANEL REY SA