sodium hydroxide in water storing a concd. soln. of Na2SO3 contg. a small amt. of NaOH in an atmosphere of NO for 5 days; starting with a overpressure of NO then storing at ambient pressure; pptn. of the sulfate on cooling at 0 °C; evapn. of the filtrate in vacuum;; formation of a crystalline crust on evaporating;;
参考文献
Journal of the Chemical Society, , vol. 67, p. 1095 - 1095
air in neat (no solvent) byproducts: Na3AlF6; on synthesis of cryolite by heating Al2O3 and NaF in a SO2/air-mixture to 800-1000°C;; isolation by extractn. of powdered product;;
