Rubidium nitrate
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| Names | |
|---|---|
| IUPAC name
Rubidium nitrate | |
| Identifiers | |
13126-12-0  | |
| 3D model (Jmol) | Interactive image |
| ChemSpider | 23971 |
| ECHA InfoCard | 100.032.767 |
| EC Number | 236-060-1 |
| PubChem | 25731 |
| RTECS number | QV0900000 |
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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] | |
| Refractive index (nD) |
1.524 |
| Hazards | |
| Main hazards | Oxidant |
| NFPA 704 | |
| Flash point | Non-flammable |
| Lethal dose or concentration (LD, LC): | |
| LD50 (median dose) |
4625 mg/kg (rat, oral) |
| Related compounds | |
| Other anions |
Rubidium sulfate Rubidium chloride |
| Other cations |
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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| Infobox references | |
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
- 1 2 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
| 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 | |||||