Substitutive alkali XW was compounded, and its application performances were studied on high temperature type reactive dye - Reactive Yellow K-RN. It could attain the effect of sodium carbonate fixation. The substitutive alkali XW was used to fix with KE-type tricolor reactive dyes dyeing. It was found that it had strong selectivity to dye structures. The application performances of substitutive alkali XW on HE-type reactive dyes were compared with commercially substitutive alkali Dyapol ALK, Ciba substitutive alkali, and sodium carbonate. The results showed that the fixation effect of substitutive alkali XW was medium, and had no distinct effect on shade of dyes.%复配了代用碱XW,并研究其在高温型活性染料——活性黄K-RN上的应用性能,可以达到碳酸钠固色的效果；用于KE型三原色活性染料染色时的固色,其对染料结构具有强选择性.对比了代用碱XW与市售商品代用碱Dyapol ALK、Ciba代用碱及碳酸钠在HE型活性染料上的应用性能.代用碱XW的固色效果中等,对染料色光不会产生显著影响.
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