Rubidium nitrate

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Rubidium nitrate
RbNO3-xtal-1992-CM-3D-sf.png
Identifiers
CAS number 13126-12-0 YesY
PubChem 25731
ChemSpider 23971 YesY
EC number 236-060-1
RTECS number QV0900000
Jmol-3D images Image 1
Properties
Molecular formula RbNO3
Molar mass 147.473 g/mol
Appearance White hygroscopic solid
Density 3.11 g/cm3
Melting point 310 °C decomp.
Boiling point 578 °C
Solubility in water 44.28 g/100 mL (16 °C), 65 g/100 mL (25 C)[1]
Refractive index (nD) 1.524
Hazards
EU Index Not listed
Main hazards Oxidant
NFPA 704
Flammability code 0: Will not burn. E.g., water Health code 1: Exposure would cause irritation but only minor residual injury. E.g., turpentine Reactivity code 0: Normally stable, even under fire exposure conditions, and is not reactive with water. E.g., liquid nitrogen Special hazard OX: Oxidizer. E.g., potassium perchlorateNFPA 704 four-colored diamond
Flash point Non-flammable
LD50 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 noted otherwise, 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 salt is white and highly soluble in water.

Properties[edit]

Solubility of rubidium nitrate in water

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[edit]

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[edit]

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[edit]

  1. ^ 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
HNO3 He
LiNO3 Be(NO3)2 B C (NH4)2NO3 O FNO3 Ne
NaNO3 Mg(NO3)2 Al(NO3)3 Si P S ClONO2 Ar
KNO3 Ca(NO3)2 Sc(NO3)3 Ti V 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 Nb Mo Tc Ru Rh Pd(NO3)2 AgNO3 Cd(NO3)2 In Sn Sb Te I Xe
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)2 Po At Rn
Fr Ra   Rf Db Sg Bh Hs Mt Ds Rg Cn Uut Fl Uup Lv Uus Uuo
La Ce(NO3)x 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