benzopurpurine

noun, often capitalized
ben·zo·pur·pu·rine | \¦ben-(ˌ)zō-ˈpər-pyə-rən, -ˌrēn\
variants: or less commonly benzopurpurin \¦ben-(ˌ)zō-ˈpər-pyə-rən \
plural -s

Definition of benzopurpurine 

: any of several closely related direct disazo red dyes: such as

a or benzopurpurine 4B : a red dye made from ortho-tolidine and naphthionic acid and used on cellulosic textiles and as an indicator and plasma stain

b or benzopurpurine 10B : a carmine-red dye made from ortho-dianisidine and naphthionic acid

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History and Etymology for benzopurpurine

International Scientific Vocabulary benz- + purpurine, purpurin

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