Rubidium nitrate
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IUPAC name
Rubidium nitrate
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Identifiers | |
3D model (JSmol)
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ChemSpider | |
ECHA InfoCard | 100.032.767 |
EC Number |
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PubChem CID
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RTECS number |
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CompTox Dashboard (EPA)
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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 g/100 mL (25 C)[1] | |
−41.0·10−6 cm3/mol | |
Refractive index (nD)
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1.524 |
Hazards | |
Occupational safety and health (OHS/OSH): | |
Main hazards
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Oxidant |
NFPA 704 (fire diamond) | |
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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Rubidium nitrate is an inorganic compound with the formula RbNO3. This alkali metal nitrate salt is white and highly soluble in water.
Properties
Rubidium nitrate is a white crystalline powder that is highly soluble in water and very slightly soluble in acetone. In a flame test, RbNO3 gives a mauve/light purple colour.
Uses
Rubidium compounds have very few applications.[1] Like caesium nitrate, it is used in infrared radiation producing pyrotechnic compositions as a colorant and an oxidizer, e.g. in decoys and illumination flares. 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. It is rarely used in fireworks to produce a red-violet colour.
Production
RbNO3 can be prepared either by dissolving rubidium metal, its hydroxide or carbonate in nitric acid.
- RbOH + HNO3 → RbNO3 + H2O
- 2 Rb + 2 HNO3 → 2 RbNO3 + H2
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. doi:10.1002/14356007.a23_473.pub2