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7440-48-4

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Product FOB Price Min.Order Supply Ability Supplier
Cobalt
Cas No: 7440-48-4
USD $ 3.0-3.0 / Kilogram 1 Kilogram 1-100 Metric Ton/Month Hangzhou Dayangchem Co., Ltd. Contact Supplier
Cobalt
Cas No: 7440-48-4
No Data No Data 10 Metric Ton/Month Hebei yanxi chemical co.,LTD. Contact Supplier
Cobalt 7440-48-4
Cas No: 7440-48-4
No Data 1 Kilogram 20 Metric Ton/Month Henan Allgreen Chemical Co.,Ltd Contact Supplier
7440-48-4 Co Cobalt
Cas No: 7440-48-4
No Data 10 Gram 5 Kilogram/Day HENAN SUNLAKE ENTERPRISE CORPORATION Contact Supplier
TIANFUCHEM--7440-48-4--High purity Cobalt factory price
Cas No: 7440-48-4
USD $ 2000.0-2000.0 / Metric Ton 1 Metric Ton 1000 Metric Ton/Day Henan Tianfu Chemical Co., Ltd. Contact Supplier
Cobalt CAS NO 7440-48-4
Cas No: 7440-48-4
No Data 10 Gram 1000 Metric Ton/Month HUBEI AOKS BIO-TECH CO.,LTD Contact Supplier
Cobalt
Cas No: 7440-48-4
No Data 1 Kilogram 500 Metric Ton/Month Weifang Tansen Yiang international trading co., LTD Contact Supplier
Cobalt Co CAS NO.7440-48-4
Cas No: 7440-48-4
No Data 10 Gram 100 Kilogram/Week Jilin Tely Imp.& Exp.Co., Ltd. Contact Supplier
Cobalt factory
Cas No: 7440-48-4
No Data No Data No Data Shaanxi Mingqi Chemical Co., Ltd Contact Supplier
Cobalt CAS NO.7440-48-4
Cas No: 7440-48-4
USD $ 50.0-100.0 / Gram 1 Gram 10000 Metric Ton/Month Wuhan Monad Medicine Tech Co.,LTD Contact Supplier

7440-48-4 Usage

Fire Hazard

Literature sources indicate that the dust of Cobalt is flammable.

Reactivity Profile

Pyrophoric Cobalt is a reducing agent. Decomposes acetylene in the cold as the metal becomes incandescent [Mellor 14:513(1946-1947]. Incompatible with oxidizing agents such as ammonium nitrate, bromine pentafluoride, and nitryl fluoride.

History

The metal was isolated by Brandt in 1735 and confirmed as an element by Bergman in 1780. Cobalt is widely distributed in nature, but in small concentrations. Its concentration in the earth’s crust is estimated to be about 0.0025% and in the sea water is about 0.02 µg/L. Most cobalt found on earth is diffused into the rocks. It also is found in coal and soils, and at trace concentations in animals and plants. It is an essential element for plants and animals (as vitamin B12). Its absence in animals can cause retarded growth, anemia and loss of apetite. The element has been detected in meteorites and in the atmospheres of the sun and other stars.

Uses

For alloys; manufacture of cobalt salts; in nuclear technology. Since 60Co can be encapsulated compactly, it has replaced radium in experimental medicine and cancer research. Cobalt is also used in the cobalt bomb, a hydrogen bomb surrounded by a cobalt metal shell. When the nuclear explosion occurs 60Co is formed from 59Co by neutron capture. Considered a "dirty bomb" because of long half-life and intense b- and g radiation. Max permissible concentration of 60Co in air: 10-7mCi/cc, Natl. Bur. Stand. Handb. 69, 31 (1959).

Definition

ChEBI: A cobalt group element atom that has atomic number 27.

Air & Water Reactions

Burns brilliantly when exposed to air [Mellor 14:453(1946-1947)]. Insoluble in water.

Uses

Cobalt has been in use as a coloring agent for glass since ancient times. The most imporant use of cobalt is in the manufacture of various wearresistant and superalloys. Its alloys have shown high resistance to corrosion and oxidation at high temperatures. They are used in machine components. Also, certain alloys are used in desulfurization and liquefaction of coal and hydrocracking of crude oil shale. Cobalt catalysts are used in many industrial processes. Several cobalt salts have wide commercial applications Cobalt oxide is used in glass to impart pink or blue color. Radioactive cobalt–60 is used in radiography and sterilization of food.

Production Methods

Cobalt is obtained from its ores, which are mostly sulfide, arsenic sulfide or oxide in nature. The finely ground ore is subjected to multistep processing, depending on the chemical nature of the ore.
When the sulfide ore carrollite, CuS•Co2S3, is the starting material, first sulfides are separated by flotation with frothers. Various flotation processes are applied. The products are then treated with dilute sulfuric acid producing a solution known as copper-cobalt concentrate. This solution is then electrolyzed to remove copper. After the removal of copper, the solution is treated with calcium hydroxide to precipitate cobalt as hydroxide. Cobalt hydroxide is filtered out and separated from other impurities. Pure cobalt hydroxide then is dissolved in sulfuric acid and the solution is again electrolyzed. Electrolysis deposits metallic cobalt on the cathode.
Production of cobalt in general is based on various physical and chemical processes that include magnetic separation (for arsenic sufide ores), sulfatizing roasting (for sulfide ores), ammoniacal leaching, catalytic reduction, and electrolysis.
Finely divided cobalt particles can be prepared by reduction of cobalt(II) chloride by lithium naphthalenide in glyme.
InChI:InChI=1/2Co/rCo2/c1-2

7440-48-4 Well-known Company Product Price

Brand (Code)Product description CAS number Packaging Price Detail
Aldrich (266701)  Cobalt  wire, diam. 1.0 mm, 99.995% trace metals basis 7440-48-4 266701-1.4G 2,699.19CNY Detail
Aldrich (398810)  Cobalt  rod, diam. 5.0 mm, 99.95% trace metals basis 7440-48-4 398810-25.5G 6,511.05CNY Detail
Aldrich (398810)  Cobalt  rod, diam. 5.0 mm, 99.95% trace metals basis 7440-48-4 398810-150MM 7,177.95CNY Detail
Aldrich (398810)  Cobalt  rod, diam. 5.0 mm, 99.95% trace metals basis 7440-48-4 398810-8.5G 2,502.63CNY Detail
Aldrich (398810)  Cobalt  rod, diam. 5.0 mm, 99.95% trace metals basis 7440-48-4 398810-50MM 2,822.04CNY Detail
Aldrich (266663)  Cobalt  rod, diam. 5.0 mm, 99.998% trace metals basis 7440-48-4 266663-3.4G 6,768.45CNY Detail
Aldrich (326380)  Cobalt  foil, thickness 0.1 mm, ≥99.99% 7440-48-4 326380-8.8G 14,461.20CNY Detail
Aldrich (356891)  Cobalt  foil, thickness 1.0 mm, 99.95% trace metals basis 7440-48-4 356891-25CM2 5,798.52CNY Detail
Aldrich (356891)  Cobalt  foil, thickness 1.0 mm, 99.95% trace metals basis 7440-48-4 356891-6.25CM2 2,190.24CNY Detail
Aldrich (697745)  Cobalt  Carbon coated magnetic, nanopowder, <50 nm particle size (TEM), ≥99% 7440-48-4 697745-500MG 1,296.36CNY Detail
Aldrich (266639)  Cobalt  powder, 2 μm particle size, 99.8% trace metals basis 7440-48-4 266639-500G 3,162.51CNY Detail
Aldrich (266639)  Cobalt  powder, 2 μm particle size, 99.8% trace metals basis 7440-48-4 266639-100G 788.58CNY Detail

7440-48-4SDS

SAFETY DATA SHEETS

According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 16, 2017

Revision Date: Aug 16, 2017

1.Identification

1.1 GHS Product identifier

Product name cobalt atom

1.2 Other means of identification

Product number -
Other names Cobalt

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only. Inorganic substances, Radionuclides (radioactive materials)
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

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