Melting point :1785 °C
Density :6.45
vapor pressure :0Pa at 20℃
solubility :insoluble in H2O; soluble in acid solutions
form :Powder
Specific Gravity :6.45
color :Green-brown
Water Solubility :insoluble
Sensitive :Air Sensitive
Crystal Structure :NaCl type
crystal system :Cube
Merck :14,2446
Space group :Fm3m
Lattice constant :

a/nm	b/nm	c/nm	α/o	β/o	γ/o	V/nm3
0.4263	0.4263	0.4263	90	90	90	0.0775

Exposure limits :ACGIH: TWA 1 mg/m3
OSHA: TWA 15 mg/m3; TWA 5 mg/m3 Stability :Stability Stable, but may be moisture sensitive.
InChI :InChI=1S/Co.O
InChIKey :IVMYJDGYRUAWML-UHFFFAOYSA-N
SMILES :O=[Co]
CAS DataBase Reference :1307-96-6(CAS DataBase Reference)
NIST Chemistry Reference :Cobalt monoxide(1307-96-6)
EPA Substance Registry System :Cobalt(II) oxide (1307-96-6)

Symbol(GHS):
Signal word:	Danger
Hazard statements:	Code Hazard statements Hazard class Category Signal word Pictogram P-Codes H301 Toxic if swalloed Acute toxicity,oral Category 3 Danger P264, P270, P301+P310, P321, P330,P405, P501 H317 May cause an allergic skin reaction Sensitisation, Skin Category 1 Warning P261, P272, P280, P302+P352,P333+P313, P321, P363, P501 H330 Fatal if inhaled Acute toxicity,inhalation Category 1, 2 Danger P260, P271, P284, P304+P340, P310,P320, P403+P233, P405, P501 H334 May cause allergy or asthma symptoms or breathing difficulties if inhaled Sensitisation, respiratory Category 1 Danger P261, P285, P304+P341, P342+P311,P501 H410 Very toxic to aquatic life with long lasting effects Hazardous to the aquatic environment, long-term hazard Category 1 Warning P273, P391, P501
Precautionary statements:	P202 Do not handle until all safety precautions have been read and understood. P260 Do not breathe dust/fume/gas/mist/vapours/spray. P273 Avoid release to the environment. P280 Wear protective gloves/protective clothing/eye protection/face protection. P302+P352 IF ON SKIN: wash with plenty of soap and water.