"Yes," answered Orme; "I remember; but now they have stronger stuffs-azo-imides, I think they call them-terrific new compounds of nitrogen.
"Queen Sheba's Ring"
H. Rider Haggard
I wonder," he went on, as though speaking to himself, "what amount of damage nearly a ton and a half of that awful azo-imide compound has done to the old sphinx.
"Queen Sheba's Ring"
H. Rider Haggard
The formation of the azo compound takes place slowly on the addition of the dimethylaniline, but the speed of the reaction is greatly increased when the hydrogen ion concentration is lowered by the addition of the sodium acetate.
"Organic-Syntheses"
Conant, James Bryant