Cobalt

Melting point :1495°C
Boiling point :2900 °C (lit.)
Density :8.9 g/mL at 25 °C (lit.)
bulk density :850kg/m3
vapor pressure :0Pa at 20℃
storage temp. :no restrictions.
solubility :H₂O: soluble
form :wire
color :Pink to red to violet
Specific Gravity :8.9
Flame Color :Silvery white
Resistivity :6.24 μΩ-cm, 20°C
Water Solubility :insoluble
Electrical Conductivity :1.7× 10⁷S/m
Thermal Conductivity :100 W/(m·K)
Specific Heat Capacity :Cp(crystal): 0.42 J/(g·K); Cp(gas): 0.39 J/(g·K), at 25℃
Merck :13,2452
Exposure limits :ACGIH:TLV-TWA 0.02 mg/m3,as Co,Inhalable particulate matter
OSHA:PEL-TWA 0.1 mg/m3
NIOSH:REL-TWA 0.05 mg/m3 Stability :Stable, but pyrophoric in air when finely divided. Incompatible with acetylene, hydrazinium nitrate, oxidizing agents, acids.
InChI :1S/Co
InChIKey :GUTLYIVDDKVIGB-UHFFFAOYSA-N
SMILES :[Co]
Hardness, Brinell :125
Hardness, Vickers :253
Modulus of Elasticity :211 GPa
Poissons Ratio :0.32
Shear Modulus :82.6 GPa
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)

Symbol(GHS):
Signal word:	Danger
Hazard statements:	Code Hazard statements Hazard class Category Signal word Pictogram P-Codes H302 Harmful if swallowed Acute toxicity,oral Category 4 Warning P264, P270, P301+P312, P330, P501 H317 May cause an allergic skin reaction Sensitisation, Skin Category 1 Warning P261, P272, P280, P302+P352,P333+P313, P321, P363, P501 H319 Causes serious eye irritation Serious eye damage/eye irritation Category 2A Warning P264, P280, P305+P351+P338,P337+P313P H334 May cause allergy or asthma symptoms or breathing difficulties if inhaled Sensitisation, respiratory Category 1 Danger P261, P285, P304+P341, P342+P311,P501 H341 Suspected of causing genetic defects Germ cell mutagenicity Category 2 Warning P201,P202, P281, P308+P313, P405,P501 H350 May cause cancer Carcinogenicity Category 1A, 1B Danger H412 Harmful to aquatic life with long lasting effects Hazardous to the aquatic environment, long-term hazard Category 3 P273, P501
Precautionary statements:	P273 Avoid release to the environment. P280 Wear protective gloves/protective clothing/eye protection/face protection. P301+P312 IF SWALLOWED: call a POISON CENTER or doctor/physician IF you feel unwell. P302+P352 IF ON SKIN: wash with plenty of soap and water. P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. P308+P313 IF exposed or concerned: Get medical advice/attention.