鹽酸副品紅是一種陽離子三芳甲烷染料，也是堿性品紅的成分之一。聚丙烯腈纖維染色后呈鮮紅色。

應用：
已使用鹽酸副品紅：制備希夫試劑；對奶牛子宮內膜細胞學樣品進行染色；對小鼠大腦普魯士藍切片進行復染。

Pararosaniline is a cationic triarylmethane dye and one of the components of basic fuchsin.[1] It gives a brilliant red color after dyeing polyacrylonitrile fibers.

Application：

Pararosaniline hydrochloride has been used:to prepare Schiff reagent；to stain cow endometrial cytology samples；to counterstain Prussian blue sections of mice brains.