Rubidium nitrate
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| Names | |
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| IUPAC name
Rubidium nitrate
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| Identifiers | |
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3D model (JSmol)
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PubChem CID
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| Properties | |
| RbNO3 | |
| Molar mass | 147.473 g/mol |
| Appearance | White hygroscopic solid |
| Density | 3.11 g/cm3 |
| Melting point | 310 °C (590 °F; 583 K) decomposes |
| Boiling point | 578 °C (1,072 °F; 851 K) |
| 44.28 g/100 mL (16 °C) 65.0 g/100 mL (25 °C)[1] | |
| Solubility in acetone | very slightly soluble |
| −41.0·10−6 cm3/mol | |
Refractive index (nD)
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1.524 |
| Structure[2] | |
| trigonal | |
| P31 | |
a = 10.474 Å, c = 7.443 Å
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Lattice volume (V)
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707.2 Å3 |
| Hazards | |
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| Flash point | Non-flammable |
| Lethal dose or concentration (LD, LC): | |
LD50 (median dose)
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4625 mg/kg (rat, oral) |
| Related compounds | |
Other anions
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Rubidium sulfate Rubidium chloride |
Other cations
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Lithium nitrate Sodium nitrate Potassium nitrate Caesium 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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Template:Chembox Footer/trackingTemplate:Short description
Rubidium nitrate is an inorganic compound with the formula RbNO3. This alkali metal nitrate salt is a white hygroscopic solid that is highly soluble in water.
Properties
In a flame test, RbNO3 gives a mauve/light purple colour.
Production
RbNO3 can be prepared either by dissolving rubidium metal, its hydroxide or carbonate in nitric acid.
- Page Module:Chem2/styles.css has no content.RbOH + HNO3 → RbNO3 + H2O
- Page Module:Chem2/styles.css has no content.Rb2CO3 + 2 HNO3 → 2 RbNO3 + CO2 + H2O
- Page Module:Chem2/styles.css has no content.2 Rb + 2 HNO3 → 2 RbNO3 + H2
Uses
Rubidium compounds have very few applications.[1] Like caesium nitrate, it is used in infrared radiation optics, in pyrotechnic compositions as a pyrotechnic colorant and as an oxidizer, e.g. in decoys and illumination flares although it is rarely used in fireworks to produce a red-violet colour. It is also used as a raw material for preparation of other rubidium compounds and rubidium metal, for manufacture of catalysts and in scintillation counters.
References
- ^ a b W. Lenk, H. Prinz, A. Steinmetz,"Rubidium and Rubidium Compounds" in Ullmann's Encyclopedia of Industrial Chemistry, 2010 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim. Script error: No such module "CS1 identifiers".
- ^ Page Module:Citation/CS1/styles.css has no content.Jutta Pohl, Dieter Pohl, Gunadi Adiwidjaja (1992). "Phase Transition in Rubidium Nitrate at 346 K and Structure at 296, 372, 413 and 437 K". Acta Crystallographica Section B. B48 (2): 160–166. doi:10.1107/S0108768191013459.
{{cite journal}}: CS1 maint: multiple names: authors list (link) - ^ Page Module:Citation/CS1/styles.css has no content.PubChem. "Rubidium nitrate". pubchem.ncbi.nlm.nih.gov. Retrieved 2026-01-19.
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