Trypan Blue

**Definition:** A diazo-naphthalene sulfonate that is widely used as a stain.

**Tree numbers:** - D02.172.975 - D02.455.426.559.847.638.555.875 - D02.886.645.600.080.050.650.875 - D04.615.638.555.875

**Synonyms:** - Diamine Blue - Niagara Blue