It ignites in air at 363° and in oxygen at 275-280 (H.
It ignites when heated in air with the formation of the monoxide; dilute acids convert it into metallic lead and lead monoxide, the latter dissolving in the acid.
Heated in contact with air to a temperature of 480° C., acetylene ignites and burns with a flame, the appearance of which varies with the way in which it is brought in contact with the air.
It burns when heated in dry air, and ignites in moist air; it is decomposed by water, giving caustic soda and hydrogen.
A red-hot iron rod may also be used to set off the magnesium, which in turn ignites the thermit.
Together with C. neglectus of East and Central Africa, C. ignites of Liberia, and C. roloway of the Gold Coast, the diana represents the special subgenus of guenons known as Pogonocebus.