直接红23是一种偶氮染料，已在吸附研究中用作模型化合物。作为吸附研究中的模型化合物，直接红23已用于比较水溶液中纺织品染料的去除效果。|提供的其他直接染料包括：|直接红80，直接红81 ，直接黄27，直接黄50，直接蓝15，直接蓝71和直接紫51。 Direct red 23 is an azo dye that has been used as a model compound in adsorption studies. As a model compound in adsorption studies, Direct red 23 has been utilized to compare efficacy of textile dye removal in aqueous solutions.|Other direct dyes offered include:|Direct Red 80 , Direct Red 81 , Direct Yellow 27 , Direct yellow 50 , Direct Blue 15 , Direct Blue 71 and Direct Violet 51 .