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A2278912

Copper , 99.99%metalsbasis, particle size <5mm , 7440-50-8

Synonym(s):
Copper

CAS NO.:7440-50-8

Empirical Formula: Cu

Molecular Weight: 63.55

MDL number: MFCD00239961

EINECS: 231-159-6

Pack Size Price Stock Quantity
5g RMB41.60 In Stock
25G RMB120.00 In Stock
100G RMB389.60 In Stock
500G RMB1748.00 In Stock
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Update time: 2022-07-08

PRODUCT Properties

Melting point: 1083.4 °C (lit.)
Boiling point: 2567 °C (lit.)
Density  8.94 g/mL at 25 °C (lit.)
vapor pressure  0Pa at 20℃
Flash point: -23 °C
storage temp.  2-8°C
solubility  slightly soluble in dilute acid solutions
form  wire
Specific Gravity 8.92
color  Rust-brownish
Resistivity 1.673 μΩ-cm, 20°C
Water Solubility  insoluble
Sensitive  air sensitive
Merck  13,2545
Exposure limits TLV-TWA 1 mg(Cu)/m3 (dusts and mists) (ACGIH and MSHA); 0.2 mg/m3 (fumes) (ACGIH).
Stability: Stable. Incompatible with strong acids, active halogen compounds, chlorine, fluorine, iodine, bromine, ammonia. May react explosively with strong oxidizing agents.
InChIKey RYGMFSIKBFXOCR-UHFFFAOYSA-N
CAS DataBase Reference 7440-50-8(CAS DataBase Reference)
NIST Chemistry Reference Copper(7440-50-8)
EPA Substance Registry System Copper (7440-50-8)

Description and Uses

Copper has long been used by humans for a variety of reasons. The name copper derives from the Latin for the metal, cuprum, which is named for the Roman source, the island of Cyprus. Copper has been used in a variety of alloys; of particular importance among copper alloys is bronze, which comprised most of the tools and weapons of the age that bears its name. Brass, a copper–zinc alloy, is also highly used, for example, in brass musical instruments. Copper has also long been used as a building material, and owing to the metal’s malleability, as well as high thermal and electric conductivity, continues to find new uses. Copper and its compounds are naturally present in the earth’s crust. Natural discharges to air and water may be significant. Therefore, it is important to consider the background levels that are commonly found and distinguish these from high levels that may be found as a result of anthropogenic activity. Copper is emitted into the air naturally from windblown dust, volcanoes, and anthropogenic sources, the largest of which are being primary copper smelters and ore processing facilities. It is associated with particulate matter. The mean concentration of copper in the atmosphere is 5–200 ng m-3.

Copper is a metal that occurs naturally throughout the environment, in rocks, soil, water, and air. Copper is an essential element in plants and animals (including humans), which means it is necessary for us to live. Therefore, plants and animals must absorb some copper from eating, drinking, and breathing.
The use of copper dates back to prehistoric times. The metal, its compounds, and alloys have numerous applications in every sphere of life&ndash;making it one of the most important metals. Practically all coinages in the world are made out of copper or its alloys. Its alloys, bronze and brass, date from ancient times. More modern alloys such as monel, gun metals, and berylliumcopper also have wide applications. The metal is an excellent conductor of electricity and heat and is used in electric wiring, switches and electrodes. Other applications are in plumbing, piping, roofing, cooking utensils, construction materials, and electroplated protective coatings. Its compounds, namely the oxides, sulfates, and chlorides, have numerous of commercial applications.
Copper is distributed widely in nature as sulfides, oxides, arsenides, arsenosulfides, and carbonates. It occurs in the minerals cuprite, chalcopyrite, azurite, chalcocite, malachite and bornite. Most copper minerals are sulfides or oxides. Native copper contains the metal in uncombined form.The principal copper minerals with their chemical compositions and percentage of copper are listed below:

Safety

Symbol(GHS) 
GHS02,GHS09
Signal word  Danger
Hazard statements  H228-H410
Precautionary statements  P210-P240-P241-P273-P280-P370+P378
Hazard Codes  F,N,Xi,Xn
Risk Statements  17-36/38-11-52/53-67-65-62-51/53-48/20-38-53-50/53-50-68/20/21/22-20/21/22
Safety Statements  5-26-16-61-62-36/37-60-36
OEB C
OEL TWA: 1 mg/m3 [*Note: The REL also applies to other copper compounds (as Cu) except Copper fume.]
RIDADR  UN 3089 4.1/PG 2
WGK Germany  3
RTECS  GL5325000
10
TSCA  Yes
HazardClass  4.1
PackingGroup  III
HS Code  74081100
Hazardous Substances Data 7440-50-8(Hazardous Substances Data)
Toxicity LD50 intraperitoneal in mouse: 3500ug/kg
IDLA 100 mg Cu/m3

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