C. The quench is performed with aqueous sodium hydrogencarbonate and ethyl acetate.
三是演出的淬火、乙酸乙酯碳酸氢钠水溶液。
2
Formed as a sublimate (mixed with ammonium hydrogencarbonate) when calcium carbonate and ammonium sulfate (or chloride) are heated together.
当碳酸钙与硫酸铵(或氯化铵)一起加热时，生成的升华物(与碳酸氢铵混合)。
3
The paper briefly introduced new preparation technology of the wider application of white carbon black which is made by the material of water glass and ammonium hydrogencarbonate .