D a cid) is main diazo-compound and amino-naphthol 3,6-disulfonic acid (H acid), salicylic acid, phenol, m-phenylene diamine is main couple-compounds.

• 酸)为主要重氮组分，苯酚、水杨酸、间苯二胺，氨基萘酚二磺酸-3，6为偶合组分，通过三步偶联反应，合成了绿、黑、棕3种皮革染料。