Cadmium nitrate
| Names | |
|---|---|
| IUPAC name
Cadmium(II) nitrate
| |
| Other names
Cadmium dinitrate
Nitric acid, cadmium salt | |
| Properties | |
| Cd(NO3)2 | |
| Molar mass | 236.422 g/mol |
| Appearance | Hygroscopic crystalline solid |
| Odor | Odorless |
| Density | 3.6 g/cm3 (anhydrous) 2.45 g/cm3 (tetrahdyrate) |
| Melting point | anhydrous 360 °C (680 °F; 633 K) tetrahydrate 59.5 °C (139.1 °F; 332.6 K) |
| Boiling point | Decomposes |
| 109.7 g/100 ml (0 °C) 126.6 g/100 ml (18 °C) 139.8 g/100 ml (30 °C) 320.9 g/100 ml (59.5 °C) | |
| Solubility | Soluble in ammonia, alcohols, acetone, diethyl ether, DMSO |
| Solubility in dimethyl sulfoxide | 30 g/100 ml (25 °C) (tetrahydrate) |
| Hazards | |
| Safety data sheet | Sigma-Aldrich (tetrahydrate) |
| Lethal dose or concentration (LD, LC): | |
| LD50 (Median dose)
|
300 mg/kg (rat, oral) |
| Related compounds | |
| Related compounds
|
Zinc nitrate Mercury(II) nitrate |
| Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). | |
| Infobox references | |
Cadmium nitrate is the cadmium salt of nitric acid, with the formula Cd(NO3)2. It is commonly encountered as tetrahydrate.
Contents
Properties
Chemical
Heating cadmium nitrate causes it to decompose to cadmium oxide, and nitrogen dioxide.
- Cd(NO3)2 → CdO + 2 NO2 + ½ O2
Physical
Cadmium nitrate is a crystalline solid, soluble in water.
Availability
Cadmium nitrate is sold by chemical suppliers, but it's not easy to acquire, due to its hazards.
Preparation
Can be prepared by dissolving cadmium metal or better, cadmium oxide in nitric acid.
- Cd + 4 HNO3 → Cd(NO3)2 + 2 NO2 + 2 H2O (concentrated acid)
- 3 Cd + 8 HNO3 → 3 Cd(NO3)2 + 2 NO + 4 H2O (diluted acid)
- CdO + 2 HNO3 → Cd(NO3)2 + H2O
Projects
- Flash powder
- Make CdS nanoparticles[1]
- Compound collecting
Handling
Safety
Cadmium nitrate is extremely toxic and is classified as Group 1 carcinogen. Wear proper protection when handling it.
Storage
Cadmium nitrate should be kept in closed and air-tight bottles, as it's hygroscopic.
Disposal
Should be converted to an insoluble cadmium compound, such as cadmium sulfide and taken to hazardous waste disposal centers.
