反应条件
sodium carbonate in water byproducts: sodium sulfate; aq. soln. of NaNO2/Na2CO3; introduction of SO2 (until acidic/litmus); addn. of a drop concd. H2SO4; formation of N(SO3)(3-); hydrolysis; short heating or left for several hours (stream of air); neutralization (Na2CO3); evapn.; left (12h/0°C);; filtration from sodium sulfate; addn. of concd. H2SO4; immediate pptn. of most HSO3NH2 (left for another day/cooling); dried on clay; washed (ice cold water); recrystn. (hot water);;
参考文献
J. Coll. Sci. Univ. Tokyo (engl. Text), , vol. 9, p. 219 - 257
S: MVol.B3, 26, page 1584 - 1585
