1117-94-8 Usage
Description
COPPER(I)ACETYLIDE, also known as cuprous acetylide, is an amorphous red powder that is unstable and explosive. It is insoluble in water but soluble in acids. It is obtained by reacting acetylene, HC≡CH, with soluble cuprous salt in water. Its chemical structure is CuC≡CCu, and it can explode when subjected to shock or heated.
Uses
Used in Chemical Industry:
COPPER(I)ACETYLIDE is used as a diagnostic test to identify the ≡CH unit, which is an important functional group in organic chemistry.
Used in Gas Purification:
COPPER(I)ACETYLIDE is used to purify acetylene, a gas that is used in various industrial processes.
Used in Metal Powder Production:
COPPER(I)ACETYLIDE is used in the preparation of pure copper powder, which is used in various applications such as electrical wiring, electronics, and plumbing.
Used in Catalyst Production:
COPPER(I)ACETYLIDE is used as a catalyst in the manufacture of 2-propyn-1-ol and acrylonitrile, which are important chemical intermediates.
Used in Explosives Industry:
Due to its explosive properties, COPPER(I)ACETYLIDE is used in detonators and other explosives.
Preparation
Copper(I) acetylide is prepared by passing acetylene gas over an aqueous solution of ammoniacal copper saltHCCH + 2Cu(NH3)2OH → CuCCCu + 4NH3 + 2H2O.
Health Hazard
There are no toxicity data in the published literatureon cuprous acetylide. As with manycopper salts, inhalation of its dust can causeirritation of the respiratory tract and ulcerationof nasal septum.
Fire Hazard
Cuprous acetylide in the dry state is highly
sensitive to shock, causing explosion on
impact. It explodes in contact with acetylene
after being warmed in air or oxygen for several
hours (Mellor 1946). It forms a highly
explosive mixture containing silver acetylide
when mixed with silver nitrate. It ignites
spontaneously with chlorine, bromine, and
iodine vapors and with fine crystals of iodine.
Reactions with dilute acids form acetylene,
which is flammable and explosive in
air. It explodes when heated above 100°C
(212°F). It forms black copper(II)acetylide
when exposed to air or oxygen.
Waste Disposal
Cuprous acetylide may be destroyed byslowly adding dilute hydrochloric acid toit in a three-necked flask under nitrogenflow. Acetylene formed is vented away withnitrogen.
Check Digit Verification of cas no
The CAS Registry Mumber 1117-94-8 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 1,1,1 and 7 respectively; the second part has 2 digits, 9 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 1117-94:
(6*1)+(5*1)+(4*1)+(3*7)+(2*9)+(1*4)=58
58 % 10 = 8
So 1117-94-8 is a valid CAS Registry Number.
1117-94-8Relevant articles and documents
In situ preparation and catalytic activation of copper nanoparticles from acetylide molecules
Judai, Ken,Numao, Shigenori,Nishijo, Junichi,Nishi, Nobuyuki
, p. 28 - 33 (2011)
Because metal nanoparticles have a high surface area to volume ratio, they can be highly reactive, cost-effective catalysts. However, metallic surfaces are usually too reactive to maintain their metallic character in the presence of oxygen and/or water va
