Caesium nitrate

Caesium nitrate^[1]

Identifiers
CAS Number	7789-18-6
3D model (Jmol)	Interactive image
ChemSpider	56425
ECHA InfoCard	100.029.224
EC Number	232-146-8
UN number	1451
InChI InChI=1S/Cs.NO3/c;2-1(3)4/q+1;-1 Key: NLSCHDZTHVNDCP-UHFFFAOYSA-N InChI=1/Cs.NO3/c;2-1(3)4/q+1;-1 Key: NLSCHDZTHVNDCP-UHFFFAOYAE
SMILES [Cs+].[O-][N+]([O-])=O
Properties
Chemical formula	CsNO3
Molar mass	194.91 g/mol
Appearance	white solid
Density	3.685 g/cm^3
Melting point	414 °C (777 °F; 687 K)
Boiling point	decomposes, see text
Solubility in water	9.16 g/100 ml (0 °C) 196.8 g/100 ml (100 °C)
Solubility in acetone	soluble
Solubility in ethanol	slightly soluble
Hazards
GHS pictograms
GHS signal word	WARNING
GHS hazard statements	H272
GHS precautionary statements	P210, P220, P221, P280, P370+378, P501
Flash point	Non-flammable
Lethal dose or concentration (LD, LC):
LD50 (median dose)	2390 mg/kg (oral, rat)[2]
Related compounds
Other anions	Caesium nitrite
Other cations	Lithium nitrate Sodium nitrate Potassium nitrate Rubidium nitrate
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references

Caesium nitrate is a chemical compound with the chemical formula CsNO₃. An alkali metal nitrate, it is used in pyrotechnic compositions, as a colorant and an oxidizer, e.g. in decoys and illumination flares. The caesium emissions are chiefly due to two powerful spectral lines at 852.113 nm and 894.347 nm.

Caesium nitrate prisms are used in infrared spectroscopy, in x-ray phosphors, and in scintillation counters.^[3] It is also used in making optical glasses and lenses.

As with other alkali metal nitrates, caesium nitrate decomposes on gentle heating to give caesium nitrite:

2CsNO₃ → 2CsNO₂ + O₂

Caesium also forms two unusual acid nitrates, which can be described as CsNO₃·HNO₃ and CsNO₃·2HNO₃ (melting points 100 °C and 36–38 °C respectively).^[1]

References

1. Weast, Robert C., ed. (1981). CRC Handbook of Chemistry and Physics (62nd ed.). Boca Raton, FL: CRC Press. p. B-92. ISBN 0-8493-0462-8..
2. http://chem.sis.nlm.nih.gov/chemidplus/rn/7789-18-6
3. Budavari, Susan, ed. (2001), The Merck Index: An Encyclopedia of Chemicals, Drugs, and Biologicals (13th ed.), Merck, p. 345, ISBN 0911910131.

External links

• Cesium Compounds: Nuclear Power Plant Emissions
• HSNO Chemical Classification Information Database

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 BiO(NO3)	Po	At	Rn
Fr	Ra		Rf	Db	Sg	Bh	Hs	Mt	Ds	Rg	Cn	Nh	Fl	Mc	Lv	Ts	Og
		↓
		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