Loading AI tools
Chemical compound From Wikipedia, the free encyclopedia
Cadmium nitrate describes any of the related members of a family of inorganic compounds with the general formula Cd(NO3)2·xH2O. The most commonly encountered form being the tetrahydrate.[7]The anhydrous form is volatile, but the others are colourless crystalline solids that are deliquescent, tending to absorb enough moisture from the air to form an aqueous solution. Like other cadmium compounds, cadmium nitrate is known to be carcinogenic. According to X-ray crystallography, the tetrahydrate features octahedral Cd2+ centers bound to six oxygen ligands.[8]
Names | |
---|---|
IUPAC name
Cadmium(II) nitrate | |
Other names
Nitric acid, cadmium salt | |
Identifiers | |
| |
3D model (JSmol) |
|
ChEBI | |
ChemSpider | |
ECHA InfoCard | 100.030.633 |
EC Number |
|
PubChem CID |
|
UNII |
|
UN number | 3087, 2570 |
CompTox Dashboard (EPA) |
|
| |
| |
Properties | |
Cd(NO3)2 | |
Molar mass | 236.42 g/mol (anhydrous) 308.48 g/mol (tetrahydrate) |
Appearance | White crystals, hygroscopic |
Odor | Odorless |
Density | 3.6 g/cm3 (anhydrous) 2.45 g/cm3 (tetrahdyrate)[1] |
Melting point | 360 °C (680 °F; 633 K) at 760 mmHg (anhydrous) 59.5 °C (139.1 °F; 332.6 K) at 760 mmHg (tetrahydrate)[1] |
Boiling point | 132 °C (270 °F; 405 K) at 760 mmHg (tetrahydrate)[2] |
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)[3] | |
Solubility | Soluble in acids, ammonia, alcohols, ether, acetone 5 g/L in methanol |
−5.51·10−5 cm3/mol (anhydrous) −1.4·10−4 cm3/mol (tetrahydrate)[1] | |
Structure | |
Cubic (anhydrous) Orthorhombic (tetrahydrate)[1] | |
Fdd2, No. 43 (tetrahydrate)[4] | |
mm2 (tetrahydrate)[4] | |
α = 90°, β = 90°, γ = 90° | |
Hazards | |
GHS labelling: | |
[5] | |
Danger | |
H301, H330, H340, H350, H360, H372, H410[5] | |
P201, P260, P273, P284, P301+P310, P310[5] | |
NFPA 704 (fire diamond) | |
Lethal dose or concentration (LD, LC): | |
LD50 (median dose) |
300 mg/kg (rats, oral)[2] |
NIOSH (US health exposure limits): | |
PEL (Permissible) |
[1910.1027] TWA 0.005 mg/m3 (as Cd)[6] |
REL (Recommended) |
Ca[6] |
IDLH (Immediate danger) |
Ca [9 mg/m3 (as Cd)][6] |
Related compounds | |
Other anions |
Cadmium acetate Cadmium chloride Cadmium sulfate |
Other cations |
Zinc nitrate Calcium nitrate Magnesium nitrate |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
|
Cadmium nitrate is used for coloring glass and porcelain[7] and as a flash powder in photography.
Cadmium nitrate is prepared by dissolving cadmium metal or its oxide, hydroxide, or carbonate, in nitric acid followed by crystallization:
Thermal dissociation at elevated temperatures produces cadmium oxide and oxides of nitrogen. When hydrogen sulfide is passed through an acidified solution of cadmium nitrate, yellow cadmium sulfide is formed. A red modification of the sulfide is formed under boiling conditions.
When treated with sodium hydroxide, solutions of cadmium nitrate yield a solid precipitate of cadmium hydroxide. Many insoluble cadmium salts are obtained by such precipitation reactions.
Seamless Wikipedia browsing. On steroids.
Every time you click a link to Wikipedia, Wiktionary or Wikiquote in your browser's search results, it will show the modern Wikiwand interface.
Wikiwand extension is a five stars, simple, with minimum permission required to keep your browsing private, safe and transparent.