Home Categories Inorganic chemistry Cobalt
A2291112

Cobalt , SP , 7440-48-4

Synonym(s):
;Cobalt;Cobalt (nanoparticles);Cobalt element;Cobalt-59

CAS NO.:7440-48-4

Empirical Formula: Co

Molecular Weight: 58.93

MDL number: MFCD00010935

EINECS: 231-158-0

Pack Size Price Stock Quantity
10G RMB63.20 In Stock
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Update time: 2022-07-08

PRODUCT Properties

Melting point: 1495°C
Boiling point: 2900 °C (lit.)
Density  8.9 g/mL at 25 °C (lit.)
vapor pressure  0Pa at 20℃
storage temp.  no restrictions.
solubility  H2O: soluble
form  wire
color  Pink to red to violet
Specific Gravity 8.9
Resistivity 6.24 μΩ-cm, 20°C
Water Solubility  insoluble
Merck  13,2452
Exposure limits TLV-TWA 0.05 mg as Co/m3 (ACGIH)
PEL-TWA: 0.05 mg as Co/m3 (NIOSH, OSHA)
TLV-STEL 0.1 mg as Co/m3 (ACGIH)
IDLH 20 mg as Co/m3 (NIOSH)
.
Stability: Stable, but pyrophoric in air when finely divided. Incompatible with acetylene, hydrazinium nitrate, oxidizing agents, acids.

Description and Uses

Cobalt was discovered by George Brandt in 1737. Cobalt exists in valence states from 0 to 5, with the most stable (+2 and +3) being the most common. Although there is only one stable isotope of cobalt, there are a number of unstable isotopes. Two of these, cobalt-60 and cobalt-57, are in use commercially. Cobalt-60 is used for cancer treatment and food irradiation. Cobalt-57 has research applications.

Cobalt is used in steel alloys, cementedcarbide abrasives and jet engines.

Safety

Symbol(GHS) 
GHS07,GHS08
Signal word  Danger
Hazard statements  H302-H317-H319-H334-H341-H350-H360F-H412
Precautionary statements  P273-P280-P301+P312-P302+P352-P305+P351+P338-P308+P313
Hazard Codes  T,Xn,F
Risk Statements  45-23/24/25-34-53-42/43-40-36/37-36/38-17-11-15
Safety Statements  53-23-26-36/37/39-45-61-37-24-22-36/37-5-43
RIDADR  UN 3264 8/PG 3
OEB D
OEL TWA: 0.05 mg/m3
WGK Germany  3
RTECS  GF8750000
TSCA  Yes
HS Code  8105 20 00
HazardClass  4.1
PackingGroup  III
Toxicity LD50 orally in Rabbit: 6170 mg/kg
IDLA 20 mg Co/m3

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