View source for Caesium nitrate

{{Short description|Chemical compound CsNO<sub>3</sub>}}
{{chembox
| Watchedfields = changed
| verifiedrevid = 443431537
| Reference = <ref name="CRC">{{RubberBible62nd|page=B-92}}.</ref>
| Name = Caesium nitrate
| ImageFile = Cesium nitrate.JPG
|Section1={{Chembox Identifiers
| InChI = 1/Cs.NO3/c;2-1(3)4/q+1;-1
| SMILES = [Cs+].[O-] [N+]([O-])=O
| InChIKey = NLSCHDZTHVNDCP-UHFFFAOYAE
| StdInChI_Ref = {{stdinchicite|correct|chemspider}}
| StdInChI = 1S/Cs.NO3/c;2-1(3)4/q+1;-1
| StdInChIKey_Ref = {{stdinchicite|correct|chemspider}}
| StdInChIKey = NLSCHDZTHVNDCP-UHFFFAOYSA-N
| CASNo = 7789-18-6
| CASNo_Ref = {{cascite|correct|CAS}}
| EC_number = 232-146-8
| ChemSpiderID_Ref = {{chemspidercite|correct|chemspider}}
| ChemSpiderID = 56425
| ChEBI = 231514
| UNNumber = 1451
| PubChem = 62674
| RTECS = FL0700000
| UNII = 0K0743KO17
  }}
|Section2={{Chembox Properties
| Formula = CsNO<sub>3</sub>
| MolarMass = 194.91 g/mol
| Appearance = white solid
| Solubility = 9.16 g/100 ml (0&nbsp;°C)<br />196.8 g/100 ml (100&nbsp;°C)
| Solubility1 = soluble
| Solvent1 = acetone
| Solubility2 = slightly soluble
| Solvent2 = ethanol
| Density = 3.685 g/cm<sup>3</sup>
| MeltingPtC = 414
| BoilingPt = decomposes, ''see text''
  }}
|Section7={{Chembox Hazards
| GHSPictograms = {{GHS flame over circle|Ox. Sol. 3}}
| GHSSignalWord = WARNING
| HPhrases = {{H-phrases|272|315|319|335}}
| PPhrases = {{P-phrases|210|220|221|280|370+378|501}}
| FlashPt = Non-flammable
| LD50 = 2390 mg/kg (oral, rat)<ref>{{cite journal|pmid=695884|author1=N Iu Tarasenko|author2=E P Lemeshevskaia|title=Deĭstvie soedineniĭ tseziia na organizm [Effect of cesium compounds on the body]|journal=Vestn Akad Med Nauk SSSR |date=1978|lang=ru}}</ref>
  }}
|Section8={{Chembox Related
| OtherAnions = [[Caesium nitrite]]
| OtherCations = [[Lithium nitrate]]<br />[[Sodium nitrate]]<br />[[Potassium nitrate]]<br />[[Rubidium nitrate]]
  }}
}}

'''Caesium nitrate''' or '''cesium nitrate''' is a salt with the [[chemical formula]] [[caesium|Cs]][[Nitrate|NO<sub>3</sub>]]. An [[alkali metal nitrate]], it is used in [[pyrotechnic composition]]s, as a [[pyrotechnic colorant|colorant]] and an [[oxidizer]], e.g. in [[decoy flare|decoys]] and [[flare (pyrotechnic)|illumination flare]]s. The [[caesium]] emissions are chiefly due to two powerful [[spectral line]]s at 852.113&nbsp;nm and 894.347&nbsp;nm.{{cn|date=September 2023}}

Caesium nitrate prisms are used in [[infrared spectroscopy]], in [[x-ray]] [[phosphor]]s, and in [[scintillation counter]]s.<ref>{{Merck13th|page=345}}.</ref> 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]]:
:{{chem2 | 2 CsNO3 -> 2 CsNO2 + O2 }}
Caesium also forms two unusual [[Acid salt|acid nitrates]], which can be described as CsNO<sub>3</sub>·HNO<sub>3</sub> and CsNO<sub>3</sub>·2HNO<sub>3</sub> (melting points 100&nbsp;°C and 36–38&nbsp;°C respectively).<ref name="CRC"/>

==References==
{{reflist}}
{{clear right}}

{{Caesium compounds}}
{{nitrates}}

[[Category:Caesium compounds]]
[[Category:Nitrates]]
[[Category:Pyrotechnic oxidizers]]
[[Category:Pyrotechnic colorants]]


{{inorganic-compound-stub}}
{{Pyrotechnics-stub}}