在这意味着对应于下式的偶氮化合物：d是对 - 或间 - 亚苯基，二者任选地被1个羧基取代或取代的1或2个磺基，或是亚萘基，与在1-或2-位上的偶氮基和分组XN（R） - （CH 2）n - 键合在5-或6-位并且任选被1或2个羧基或者1或2个磺基取代; R为氢或任选被1至4个碳原子的氰基，羧基，磺基，硫酸根合或磷酸根合烷基取代; n是零，1或2; X是纤维反应性二嗪，三嗪，吡啶，嘧啶，哒嗪，噻嗪，恶嗪，喹啉，酞嗪或菲啶基，具有至少一个反应性取代基并选自任选的额外的不同的取代基：由 烷基和/或任选取代的芳基 - 取代的铵，肼，和锍基团，烷基磺酰基，芳基磺酰基，叠氮基，Rhodanido-，硫代，烷硫基，芳硫基，烷氧基，芳氧基，亚磺酸或磺酸基团; X是脂肪族反应基团; M是氢原子或碱金属或二价或三价金属的等价物。 这些偶氮化合物具有非常良好的纤维反应性染料性质和染料羟基和/或carbonamidgruppenhaltiges材料，特别是纤维材料，如羊毛，特别是纤维素，在强，快速，清晰的色调。

Azo compounds corresponding to the general formula in which:
D is para- or meta-phenylene, both optionally substituted by 1 carboxy or 1 or 2 sulfo, or is naphthylene, with the azo group in the 1- or 2-position and the grouping XN (R) - (CH₂) _n - in 5- or 6-position bound and optionally substituted by 1 or 2 carboxyl or sulfo, or 1 or 2;
R is hydrogen or optionally substituted by cyano, carboxy, sulfo, sulfato or phosphato alkyl of 1 to 4 carbon atoms;
n is zero, 1 or 2;
X is a fiber-reactive diazine, triazine, pyridine, pyrimidine, pyridazine, thiazine, oxazine, quinoline, phthalazine or phenanthridine radical, with at least one reactive substituent and optionally additional different substituents from the group: by alkyl and / or optionally substituted aryl-substituted ammonium, hydrazinium, and sulfonium groups, alkylsulfonyl, arylsulfonyl, azido, Rhodanido-, thio, alkylthio, arylthio, alkoxy, aryloxy, sulfinic acid or sulfonic acid groups; X is an aliphatic reactive radical;
M is a hydrogen atom or alkali metal or the equivalent of a divalent or trivalent metal.
These azo compounds possess very good fiber-reactive dye properties and hydroxy- and / or carbonamidgruppenhaltiges material, especially fiber material, such as wool and in particular cellulose, in strong, fast, clear tones.