Copper CAS#7440-50-8

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Chemical Name: Copper
CAS No.: 7440-50-8
Molecular Formula:Cu
Molecular weight: 63.55
Sample: Available

Copper: The Complete Guide

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Basic Info of Copper

Chemical Name	Copper
Synonyms	cum3;ce1110;m3s;cda122;Copper;
CAS No.	7440-50-8
Molecular Formula	Cu
Molecular Weight	63.54600
PSA	0.00000
LogP	0.00000

Safety Info

HS Code	GL5325000
WGK Germany	3

Properties

Appearance & Physical State	white crystals
Density	8.92
Boiling Point	1083.4 °C(lit.)
Melting Point	2580 °C
Flash Point	-23 °C
Refractive Index	1.48

Numbering system

UNII	789U1901C5

What is Copper?

With the progress of science and technology and the development of society, chemical products have invariably permeated our daily lives, in medicine, food, cosmetics, electronics, industry, and other areas, becoming an essential part of our lives. One such product is Copper which has developed particularly rapidly in recent years. Do you know about Copper?

The official answer: Cuprum is a metallic element and also a transitional element, the chemical symbol Cu, the English copper, atomic number 29. Pure copper is a soft metal, the surface is reddish-orange with a metallic luster when cut, and the element is purple-red. Good ductility, high thermal and electrical conductivity, so cables and electrical and electronic components are the most used materials, can also be used as building materials, can be composed of many kinds of alloys. Copper alloys have excellent mechanical properties and low resistivity, the most important of which are bronze and brass. Too, copper is a durable metal that can be recovered many times without compromising its mechanical properties.
Divalent copper salts are the most common copper compounds, their hydrated ions are often blue, while chlorine as a ligand is green, is a source of mineral colors such as azurite and turquoise, and has been used as a pigment. Copper building structures produce patina (basic copper carbonate) after corrosion. Decorative arts use metallic copper and copper-containing pigments.
Copper is one of the earliest metals used by humans. As early as prehistoric times, people began to mine open-pit copper and use the copper obtained to make weapons, tools and other utensils, and the use of copper had a profound impact on the progress of early human civilization. Copper is a metal found in the earth’s crust and oceans. The content of copper in the earth’s crust is about 0.01%, and in individual copper deposits, the content of copper can reach 3% to 5%. Most of the copper in nature exists as compounds, copper ores.
Copper is less active, and the reaction of iron element with copper sulfate can replace the copper element. Copper elemental insoluble in non-oxidizing acids.

What’s the application of Copper?

Electrical and electronics markets Transportation equipment Industrial machinery and equipmentalloy
Copper can be used to make a variety of alloys, and the important alloys for copper are as follows:
(1) Brass: Brass is an alloy of copper and zinc, named after the yellow color. Brass has good mechanical properties and wear resistance, and can be used to manufacture precision instruments, parts of ships, shell casings of guns, etc. Brass sounds good when it sounds good, so instruments such as gongs, cymbals, bells, and trumpets are made of brass.
(2) Nautical brass: alloy of copper, zinc and tin, resistant to seawater erosion, can be used to make ship parts, balancers.
(3) Bronze: The alloy of copper and tin is called bronze, which is named because of the color blue. In ancient times, alloys were used (such as the Bronze Age in China). Bronze generally has good corrosion resistance, wear resistance, casting and excellent mechanical properties. It is used for the manufacture of precision bearings, high-pressure bearings, mechanical parts on ships that are resistant to seawater corrosion, and various plates, pipes, rods, etc. Bronze also has an anomalous property – “heat contraction and cold expansion”, which is used to cast statues, which are cooled and expanded, which can make the eyebrows clearer.
(4) Phosphor bronze: alloy of copper and tin and phosphorus, hard, can make springs.
(5) White copper: white copper is an alloy of copper and nickel, its color is the same as silver, silver is shining, not easy to rust. used in the manufacture of coins, appliances, gauges and ornaments.
(6) 18K gold (rose gold): alloy of 6/24 copper and 18/24 gold. Reddish yellow, hardness, can be used to make jewelry, ornaments.

Conclusion

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