Cadmium oxide CAS#1306-19-0
Distinctive Physical Properties – Cadmium oxide (CdO) appears as a brownish-red to brownish-black amorphous powder or fine cubic crystalline particles at room temperature.
Solubility in Various Solutions – It dissolves in acids, aqueous ammonia, and ammonium salt solutions, while remaining insoluble in water and alkalis.
Formation of Complex Ions – Cadmium oxide reacts with acidic and alkaline media to form characteristic complex ions, including \([Cd(H₂O)₆]²⁺\) and \([Cd(OH)₄]²⁻\).
Industrial and Chemical Applications – It is used as a catalyst and as a raw material for preparing high-purity cadmium salts. Safety note: Cadmium oxide is carcinogenic and requires appropriate handling precautions.
Products Description of Cadmium oxide CAS#1306-19-0
Cadmium oxide (CdO) is an inorganic compound of cadmium that is classified as a carcinogen. At room temperature, it typically appears as a brownish-red to brownish-black amorphous powder or as fine cubic crystals. It dissolves in acids to form the complex ion [Cd(H₂O)₆]²⁺ and can also dissolve in alkaline media to form [Cd(OH)₄]²⁻. Cadmium oxide is soluble in acids, aqueous ammonia, and ammonium salt solutions, but insoluble in water and alkalis. Its main applications include use as a catalyst and as a raw material for producing high-purity cadmium salts.
Cadmium oxide Chemical Properties
| Melting point | 900°C |
| Boiling point | 1385 °C |
| density | 8.15 g/mL at 25 °C(lit.) |
| storage temp. | Store below +30°C. |
| solubility | 0.0021g/l |
| form | powder |
| color | brown |
| Specific Gravity | 8.15 |
| Odor | Odorless |
| PH | 9-10 (H2O)(aqueous suspension) |
| Water Solubility | insoluble. <0.1 g/100 mL at 20 ºC |
| Crystal Structure | Cubic, Halite Structure - Space Group Fm3m |
| Merck | 141623 |
| Exposure limits | ACGIH: TWA 0.01 mg/m3; TWA 0.002 mg/m3 |
| NIOSH: IDLH 9 mg/m3 | |
| Stability: | Stable. Incompatible with magnesium. |
| CAS DataBase Reference | 1306-19-0(CAS DataBase Reference) |
| NIST Chemistry Reference | Cadmium oxide(1306-19-0) |
| EPA Substance Registry System | Cadmium oxide (1306-19-0) |
| Hazard Codes | T,N,T+ |
| Risk Statements | 49-22-48/23/25-68-63-62-50/53-26-45 |
| Safety Statements | 53-45-61-60 |
| RIDADR | UN 2570 6.1/PG 3 |
| WGK Germany | 2 |
| RTECS | EV1925000 |
| TSCA | Yes |
| HS Code | 2825 90 60 |
| HazardClass | 6.1 |
| PackingGroup | III |
| Hazardous Substances Data | 1306-19-0(Hazardous Substances Data) |
| Toxicity | LC50 in rats, monkeys (mg/m3): 500, ~15000 (Barrett) |
| IDLA | 9 mg Cd/m3[Unc h] |
Product Application of Cadmium Oxide CAS#1306-19-0
Cadmium oxide is used in cadmium electroplating solutions, cadmium electrodes, photoelectric tubes, and gamma-ray photography. It is also applied as a pigment in ceramic glazes, in alloy production within the metallurgical industry, and as a raw material and catalyst for the preparation of cadmium salts and cadmium reagents.
