| 释义 |
ben·zo·purpurine
\|ben(ˌ)zō+\ noun
also ben·zo·purpurin \“+\
(-s)
Usage: often capitalized
Etymology: International Scientific Vocabulary benz- + purpurine, purpurin
: any of several closely related direct disazo red dyes: 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 — see dye table I (under Direct Red 2)
b. or benzopurpurine 10B : a carmine-red dye made from ortho-dianisidine and naphthionic acid : see dye table I (under Direct Red 7) |