Cadmium nitrate

Cadmium nitrate

Skeletal formula of cadmium chloride
Crystal of cadmium chloride
Names
IUPAC name Cadmium(II) nitrate
Other names Nitric acid, cadmium salt
Identifiers
CAS Number	10325-94-7 Y 10022-68-1 (tetrahydrate) N
ChEBI	CHEBI:77732 N
ChemSpider	23498 Y
EC Number	233-710-6
Jmol 3D model	Interactive image
UN number	3087
InChI InChI=1S/Cd.2NO3/c;2*2-1(3)4/q+2;2*-1 Y Key: XIEPJMXMMWZAAV-UHFFFAOYSA-N Y InChI=1/Cd.2NO3/c;2*2-1(3)4/q+2;2*-1 Key: XIEPJMXMMWZAAV-UHFFFAOYAP
SMILES [Cd+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O
Properties
Chemical formula	Cd(NO3)2
Molar mass	236,42
Appearance	White crystals, hygroscopic
Odor	Odorless
Density	3.6 g/cm3 (anhydrous) 2.45 g/cm3 (tetrahdyrate)
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)
Boiling point	132 °C (270 °F; 405 K) at 760 mmHg (tetrahydrate)
Solubility in water	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 acids, ammonia, alcohols, ether, acetone
Magnetic susceptibility (χ)	−5.51·10−5 cm3/mol (anhydrous) −1.4·10−4 cm3/mol (tetrahydrate)
Structure
Crystal structure	Cubic (anhydrous) Orthorhombic (tetrahydrate)
Space group	Fdd2, No. 43 (tetrahydrate)
Point group	mm2 (tetrahydrate)
Lattice constant	α = 90°, β = 90°, γ = 90°
Vapor pressure	{{{value}}}
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).
N verify (what is YN ?)
Infobox references

Cadmium nitrate describes any of the related members of a family of inorganic compound with the general formula Cd(NO₃)₂.xH₂O. The anhydrous form is volatile but the others are salts. All are colourless crystalline solids that absorb moisture from air and becomes watery, that is deliquescent. Cadmium compounds are also known to be carcinogenic.

Uses

Cadmium nitrate is used for coloring glass and porcelain and as a flash powder in photography.

Preparation

Cadmium nitrate is prepared by dissolving cadmium metal or its oxide, hydroxide, or carbonate, in nitric acid followed by crystallization:

CdO + 2HNO₃ → Cd(NO₃)₂ + H₂O

CdCO₃ + 2 HNO₃ → Cd(NO₃)₂ + CO₂ + H₂O

Cd + 4 HNO₃ → 2 NO₂ + 2 H₂O + Cd(NO₃)₂

Reactions

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 with caustic soda solution, cadmium oxide forms precipitate of cadmium hydroxide. Many insoluble cadmium salts are obtained by such precipitation reactions.

External links

Salts and covalent derivatives of the Nitrate ion
HNO3																	He
LiNO3	Be(NO3)2											B(NO3)4−	C	N	O	FNO3	Ne
NaNO3	Mg(NO3)2											Al(NO3)3	Si	P	S	ClONO2	Ar
KNO3	Ca(NO3)2	Sc(NO3)3	Ti(NO3)4	VO(NO3)3	Cr(NO3)3	Mn(NO3)2	Fe(NO3)3	Co(NO3)2, Co(NO3)3	Ni(NO3)2	Cu(NO3)2	Zn(NO3)2	Ga(NO3)3	Ge	As	Se	Br	Kr
RbNO3	Sr(NO3)2	Y	Zr(NO3)4	Nb	Mo	Tc	Ru	Rh	Pd(NO3)2	AgNO3	Cd(NO3)2	In	Sn	Sb	Te	I	Xe(NO3)2
CsNO3	Ba(NO3)2		Hf	Ta	W	Re	Os	Ir	Pt	Au	Hg2(NO3)2, Hg(NO3)2	Tl(NO3)3	Pb(NO3)2	Bi(NO3)3	Po	At	Rn
Fr	Ra		Rf	Db	Sg	Bh	Hs	Mt	Ds	Rg	Cn	Uut	Fl	Uup	Lv	Uus	Uuo
		↓
		La	Ce(NO3)3, Ce(NO3)4	Pr	Nd	Pm	Sm	Eu	Gd(NO3)3	Tb	Dy	Ho	Er	Tm	Yb	Lu
		Ac	Th	Pa	UO2(NO3)2	Np	Pu	Am	Cm	Bk	Cf	Es	Fm	Md	No	Lr