1863 G. Fownes (ed. 9) 646 Toluylene-diamine.
1872 25 22/1 Toluylen alcohol is a solid crystalline substance, having no constant melting-point.
1888 H. E. Roscoe & C. Schorlemmer III. ii. 80 Toluylene-blue... Toluylene-red... Toluylene-violet forms red crystals.