A2291312
Cobalt , 99.5%metalsbasis, 300 measuring , 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 |
25G | RMB79.20 | In Stock |
|
100G | RMB239.20 | In Stock |
|
500G | RMB799.20 | In Stock |
|
others | Enquire |
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. |
CAS DataBase Reference | 7440-48-4(CAS DataBase Reference) |
IARC | 2B (Vol. 52) 1991, 2B (Vol. 86) 2006, 2A (Vol. 86) 2006 |
NIST Chemistry Reference | Cobalt(7440-48-4) |
EPA Substance Registry System | Cobalt (7440-48-4) |
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 |
Hazardous Substances Data | 7440-48-4(Hazardous Substances Data) |
Toxicity | LD50 orally in Rabbit: 6170 mg/kg |
IDLA | 20 mg Co/m3 |