H acid ndi mankhwala omwe amagwiritsidwa ntchito popanga utoto wa acidic, wowongoka komanso wokhazikika. Monga Acid Fuchsin 6B, Acid Scarlet G, Acid Black 10B, Direct Black, Reactive Brilliant Red K-2BP, Reactive Violet K-3R, Reactive Blue KR ndi mitundu yoposa 90, Utoto uwu amagwiritsidwa ntchito kupaka nsalu zaubweya ndi thonje. Itha kugwiritsidwanso ntchito kutulutsa mankhwala.