Let us know about Cupric Oxide Formula. Cuprous oxide , also called copper(II) oxide, is a chemical compound of the formula CuO.
Cupric oxide is found in nature as one of the constituents of minerals such as tenorite and peramelaconite. It is extracted from minerals around the world, mainly in South America, in countries like Peru, Bolivia.
Some chemical compounds like ammonium carbonate and ammonia are used to promote the extraction of minerals.
Cupric oxide is mainly produced in minerals by extraction, although there are some processes to produce it industrially.
Cupric oxide is prepared by the ignition reaction of cupric nitrate trihydrate (100–20 °C), cupric hydroxide (100 °C) or copper carbonate (250 °C):
2Cu (NO) 3 ) 2 → 2CuO + 4NO 2 + O 2
Cu (OH) 2 (s) → CuO (s) + H 2 O (l)
CuCO 3 → CuO + CO 2
It is prepared synthetically by heating copper metal in air at about 800 °C (cupric oxide formula, SF).
Physical and Chemical Properties of Cuprous Oxide
Copper(II) oxide It appears as a fine black powder with an ionic structure.
The molecule is formed from divalent cationic copper Cu + 2 and anionic oxygen O-2. The molecules form a monoclinic crystalline system, where each copper atom is coordinated by 4 oxygen atoms.
It is closely related to another copper oxide: Cu2O cupric oxide (National Center for Biotechnology Information. 2005).
Its molecular weight is 79.545 g/mol and its density is 6.315 g/ml. Its melting point is 1326 °C where it decomposes to release oxygen, its boiling point is above 2000 °C.
The compound is insoluble in water, alcohol, ammonium hydroxide, ammonium carbonate and soluble in ammonium chloride and potassium cyanide (Royal Society of Chemistry, 2015).
Copper oxide is amphoteric, so it can dissolve in acid and alkaline solutions. In alkaline solution, it reacts to form other copper salts:
2MetalOH + CuO + H 2 O → Metal 2 [Cu (OH) 4 ]
In acid solutions, it also reacts to form other copper salts:
CuO + 2HNO 3 → Cu (NO) 3 ) 2 + H 2 O
CuO + 2HCl → CuCl 2 + H 2 O
It explodes when heated in contact with aluminum, hydrogen or magnesium. Also it produces some toxic vapors when heated.
Feedback and Hazards
Copper(II) oxide is highly toxic and toxic by ingestion. Damages the central nervous system and endocrine system (AZoM, 2013).
It also causes irritation to the eyes and skin. Non-flammable, stable and with reducing agents, hydrogen sulfide, aluminum, alkali metals, finely powdered metals (Fisher Cyphic, 2009).
In case of eye contact, you should check if you are wearing contact lenses and remove them immediately.
Eyes should be washed with running water for at least 15 minutes, keeping the eyelids open. You can use cold water. The ointment should not be used for the eyes.
If the chemical comes into contact with clothing, remove it as soon as possible, while protecting your hands and body. Place the victim under the safety shower.
If the chemical gets on the victim’s exposed skin, such as the hands, gently and carefully wash the contaminated skin with plenty of water and non-abrasive soap.
You can use cold water. If irritation persists, seek medical attention. Wash contaminated clothing before reusing.
If contact with the skin is severe, it should be washed with a disinfecting soap and the contaminated skin should be covered with an anti-bacterial cream.
In case of inhalation, the victim should be allowed to rest in a well-ventilated area. If inhalation is severe, the victim should be taken to a safe area as soon as possible.
Loose clothing such as shirt collars, belts or ties. If the victim finds it difficult to breathe, oxygen should be administered.
If the victim is not breathing, mouth-to-mouth resuscitation is resumed. Always bear in mind that it can be dangerous for the person providing help to perform mouth-to-mouth resuscitation when the inhaled material is toxic, infectious or corrosive.
In case of ingestion, do not induce vomiting. Loose clothing such as shirt collars, belts or ties. If the victim is not breathing, give mouth-to-mouth resuscitation.
In all cases you should seek immediate medical attention (Material Safety Data Sheet Cupric oxide, 2013).
Cupric oxide is used as a pigment for crystal, porcelain enamels, and artificial gems. The oxide adds a blue-greenish tint to such materials.
It is also used as an oxidizing agent for petroleum gases and as an oxidation catalyst and in galvanic electrodes (Encyclopædia Britannica, 2017).
Cupric oxide is widely used in the chemical and agrochemical industries to produce intermediate products in certain processes.
It is a widely used oxidizing/reducing agent and a regulator of process in chemical reactions, especially in the production of petroleum.
Cupric oxide is used to make paints and coatings and is also an ingredient in some air care products.
Rarely used as a dietary supplement in animals, it also finds use as a p-type semiconductor due to its narrow band gap. It is used as a substitute for iron oxide in termites.
Due to its fungicidal and microbial properties, copper(II) oxide is also used as an insecticide and fumigant.
It is mainly used in the treatment of potato plants and as an antifouling agent in ship hulls. An antifouling agent is a material that prevents the formation of barnacles and other organisms in the bottom of a boat.
When these organisms grow in the hull of a ship, they increase the friction generated when it passes through water, thus reducing its speed.
The compound is also used as a preservative for wood, to protect fence posts, shavings, decking, roofing, shingles, sea walls, and other freshwater and marine structures from insects and fungi.