Cobalt(III)oxide , 98% , 1308-04-9
Synonym(s):
Cobalt tetraoxide;Cobaltic-cobaltous oxide;Tricobalt tetraoxide
CAS NO.：1308-04-9
Empirical Formula: Co2O3
Molecular Weight: 165.86
MDL number: MFCD00036266
EINECS: 215-156-7
| Pack Size | Price | Stock | Quantity |
| 25g | RMB44.00 | In Stock |
|
| 100g | RMB92.00 | In Stock |
|
| 500g | RMB329.60 | In Stock |
|
| others | Enquire |
PRODUCT Properties
| Melting point: | 895 °C (dec.)(lit.) |
| Density | 6.11 g/mL at 25 °C(lit.) |
| storage temp. | Inert atmosphere,Room Temperature |
| solubility | insoluble in H2O; soluble in concentrated acid solutions |
| form | powder |
| color | gray-black |
| Water Solubility | insoluble H2O; soluble conc acids [HAW93] |
Description and Uses
Neither the oxide Co2O3 nor the hydroxide Co(OH)3 is definitely established. The oxidation of cobalt(II) hydroxide in aqueous suspension with, for example, peroxides, or the destruction of a cobalt(III) complex with alkali gives a brown or black powder Co2O3.aq which upon drying at 150° yields the monohydrate Co2O3.H2O; this is probably best formulated as CoO(OH). When heated further in attempts to dehydrate it, the "monohydrate" begins to evolve oxygen (as well as water) at 300° with the formation of black Co3O4. When heated to 100° in air cobalt(II) hydroxide is converted to dark brown CoO(OH).
Pigment, coloring enamels, glazing pottery.
Safety
| Symbol(GHS) |   GHS08,GHS07 |
| Signal word | Warning |
| Hazard statements | H351-H317-H410-H302 |
| Precautionary statements | P201-P202-P281-P308+P313-P405-P501-P264-P270-P301+P312-P330-P501-P261-P272-P280-P302+P352-P333+P313-P321-P363-P501-P273-P391-P501 |
| Hazard Codes | Xn |
| Risk Statements | 36/37/38-40-43-22 |
| Safety Statements | 26-36/37/39-36/37 |
| WGK Germany | 1 |
| RTECS | GG2500000 |
| Toxicity | mouse,LD50,subcutaneous,2064mg/kg (2064mg/kg),Zhurnal Vsesoyuznogo Khimicheskogo Obshchestva im. D.I. Mendeleeva. Journal of the D.I. Mendeleeva All-Union Chemical Society. Vol. 19, Pg. 186, 1974. |
