Assertion: sodium carbonate | /r/MadeOf | one per cent sodium sulphate
Facets:
Source sentences:
text: other salts, which consists in stirring such brines-with an excess of the solid phases of sodium chloride and sodium carbonate monohydrate or sodium carbonate decahydrate at an approximate temperature of 30 C. until solubility equilibrium is substantially attained, allowing the excess of salts to settle out at the maintained temperature of approximately 30 C., drawing all the settled salts and then chilling such brines to a temperature above zero degrees centigrade so as to cause a substantial part of the sodium carbonate to crystallize out as sodium carbonate decahydrate admixed with sodium sulphate decahydrate, removing and washing the mother liquor from the decahydrates, and driving off the water from such decahydrate crystals in a drier or evaporator to form soda ash containing over one per cent sodium sulphate.