高锰酸钾俗称PP粉，它是紫黑色且有金属光泽的细小晶体。不同质量分数的溶液有不同的消毒杀菌的作用。深紫色溶液（质量分数约为0．3％），具有强烈的氧化性，杀菌能力强，可用于消毒浴具、痰盂等。紫红色溶液（质量分数约为0.05％），有止痒、消炎和防感染扩散的作用，可用于 Potassium permanganate is commonly referred to as PP powder, which is a small crystal with purple black and metallic luster. Different mass fractions of the solution have different disinfection and sterilization effects. Deep purple solution (mass fraction is about 0.3%), with strong oxidation, strong bactericidal ability, can be used for disinfecting baths, bowls, etc. The purplish red solution (mass fraction is about 0.05%) has anti-pruritic, anti-inflammatory and anti-infective spread effects and can be used for