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Tricobalt tetraoxide Structure

Tricobalt tetraoxide

Chemical Properties

Melting point 895 °C (dec.)(lit.)
Boiling point 3800°C
Density  6.11 g/mL at 25 °C(lit.)
vapor pressure  0Pa at 20℃
solubility  insoluble in H2O; soluble in acid solutions, alkaline solutions
form  powder
color  Dark Gray
Specific Gravity 6.11
Water Solubility  Soluble in acids and alkalis. Insoluble in water.
Crystal Structure Spinel type
crystal system Cube
Merck  14,2429
Space group Fd3m
Lattice constant
a/nmb/nmc/nmα/oβ/oγ/oV/nm3
0.808350.808350.808359090900.5282
Exposure limits ACGIH: TWA 0.02 mg/m3
InChI InChI=1S/3Co.4O
InChIKey LBFUKZWYPLNNJC-UHFFFAOYSA-N
SMILES O([Co]=O)[Co]=O.O=[Co]
CAS DataBase Reference 1308-06-1(CAS DataBase Reference)
EWG's Food Scores 1
FDA UNII USK772NS56
NIST Chemistry Reference Cobalt oxide(1308-06-1)
EPA Substance Registry System Cobalt tetraoxide (1308-06-1)

Safety

Symbol(GHS)
Signal wordDanger
Hazard statements H334-H350i-H412
Precautionary statements P201-P273-P308+P313
Hazard Codes  Xn,T,Xi
Risk Statements  36/37/38-40-43-49-50/53-42-52/53
Safety Statements  26-36/37/39-45-36/37-53-61-22
RIDADR  1477
WGK Germany  1
RTECS  GG2500000
TSCA  Yes
HazardClass  9
HS Code  28220000
NFPA 704:
1
2 0

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