A patent has been recently taken out for colouring matters... (fluorescent shades on cotton)

The Textile Mercury, 13.12.1890

A patent has been recently taken out for colouring matters which presents a very novel feature—that of dyeing fluorescent shades on cotton. These are obtained by chlorodinitro benzene C₆H₃Cl(NO)₂ which by condensation with metamido dimethylaniline yields a new base, rend this heated with nitrosodimethyl aniline gives the new colouring matters as a brilliant, crystalline, brownieh-red mass of considerable colouring power, dyeing wool a blue-violet, tannin-mordanted cotton a blue violet, fluorescent when seen by artificial light, and silk a violet colour.