brown-black solid; explodes [CRC10]
Brownish black powder; insoluble in water.
Cupric acetylide is used as a detonator.Its applications are very limited, however,because of its high sensitivity to impact orfriction. It is susceptible to form and buildup upon prolong contact of copper metal withorganic vapors.
Copper(II) acetylide may be prepared by passing alkyl acetylene vapors over aqueous solution of ammoniacal copper salt.
Copper(II) acetylide is highly sensitive to impact, friction or heat. Mild impact or heating can cause a violent explosion. In the dry state it is flammable and is more sensitive to impact or friction than copper(I) acetylide.
Cupric acetylide is much more sensitive to
impact and friction than the cuprous salt.
Friction heating or mild impact can result in
violent explosion. In dry state, its sensitivity
is much greater to impact and is flammable.
Confirmed carcinogen.
Cases of berylliosis have been reported from
exposure to so-called low berylhum alloys.
Human systemic effects by inhalation:
dyspnea, fibrosing alveolitis, weight loss, or
decreased weight gain. See also
BERYLLIUM COMPOUNDS and
COPPER COMPOUNDS. When heated to
decomposition it emits very toxic fumes of
BeO.
