It was found that the sulphonamide group and the substituents on nitrogen atom within the molecule would effect the properties of these dyes.

坚牢度和光谱特性,发现磺和在它的氮原子上的取代影响该类染料的性能。

As a especially effective collector for processing copper sulphide ore, methyl sulphonamide features good selectiveness and strong collection.

甲硫为硫化铜矿选矿的特别有效的捕收剂,具有选择性好、捕收力强的特性。