Borax Decahydrate (Technical Powder) - Turkey

Brief Overview The inorganic powder known as borax, also known as sodium tetraborate decahydrate, has a white appearance and the formula Na2B4O7·10H2O or Na2[B4O5(OH)4]·8H2O. It is a salt of the substance known as boric acid and a compound of the element boron. It can be found in nature as a mixture of several borax hydrates or as evaporite. Borax has several important qualities, including being very soluble in water, having a moderately alkaline salt action, producing a greenish yellow flame when burned, having strong chemical stability, and having good buffering and fluxing qualities. Manufacturing Process The most widely used commercial processes for making borax begin with the use of naturally occurring minerals found in lakes or mines. The combination of minerals, including colemanite and ulexite, is fed into solar evaporation ponds in the form of slurry. To guarantee selective crystallization, impurities including sodium chloride, sodium bicarbonate, and sodium sulfate are concentrated, crystallized, and then eliminated either by filtering or by quickly cooling the mixture. The liquid-liquid extraction process result, sulfate cake, and the filtered brine are then combined to produce potassium sulphate and potassium chloride, which are then further precipitated. After cooling the resultant mixture, borax pentahydrate separates from the residual mixture. In order to create borax decahydrate, this borax product is then redissolved, hydrated, and then filtered.