Rubidium Chromate

CAS 13446-72-5

Product Product Code Order or Specifications
(2N) 99% Rubidium Chromate RB-CRAT-02 Contact American Elements
(3N) 99.9% Rubidium Chromate RB-CRAT-03 Contact American Elements
(4N) 99.99% Rubidium Chromate RB-CRAT-04 Contact American Elements
(5N) 99.999% Rubidium Chromate RB-CRAT-05 Contact American Elements

Formula CAS No. PubChem SID PubChem CID MDL No. EC No IUPAC Name Beilstein
Re. No.
Rb2CrO4 13446-72-5 24864932 61605 MFCD00016295 236-601-1 dioxido(dioxo)chromium; rubidium(1+) N/A [Rb+].[Rb+].

PROPERTIES Compound Formula Mol. Wt. Appearance Density

Exact Mass

Monoisotopic Mass Charge MSDS
CrO4Rb2 286.93 Yellow to Yellow-Green Powder or Crystals 3.518 g/cm3 285.743749 285.743749 0 Safety Data Sheet

Chromate IonRubidium Chromate is generally immediately available in most volumes. High purity, submicron and nanopowder forms may be considered. American Elements produces to many standard grades when applicable, including Mil Spec (military grade); ACS, Reagent and Technical Grade; Food, Agricultural and Pharmaceutical Grade; Optical Grade, USP and EP/BP (European Pharmacopoeia/British Pharmacopoeia) and follows applicable ASTM testing standards. Typical and custom packaging is available. Additional technical, research and safety (MSDS) information is available as is a Reference Calculator for converting relevant units of measurement.

Rubidium (Rb) atomic and molecular weight, atomic number and elemental symbol Rubidium (atomic symbol: Rb, atomic number: 37) is a Block S, Group 1, Period 5 element with an atomic weight of 5.4678. Rubidium Bohr ModelThe number of electrons in each of Rubidium's shells is [2, 8, 18, 8, 1] and its electron configuration is [Kr] 5s1. The rubidium atom has a radius of 248 pm and a Van der Waals radius of 303 pm. Rubidium is highly reactive, with properties similar to other Group 1 Alkali metals, e.g., rapid oxidation in air. In its elemental form, rubidium has a gray white appearance. Rubidium is found in the minerals lepidolite, leucite, pollucite, carnallite, and zinnwaldite as well as some potassium minerals. Rubidium was discovered by Robert Bunsen and Gustav Kirchhoff in 1861 and was first isolated by George de Hevesy. The name Rubidium, originates from the Latin word rubidus, meaning "dark or deepest red." For more information on rubidium, including properties, safety data, research, and American Elements' catalog of rubidium products, visit the Rubidium Information Center.

Chromium (Cr) atomic and molecular weight, atomic number and elemental symbolChromium (atomic symbol: Cr, atomic number: 24) is a Block D, Group 6, Period 4 element with an atomic weight of 51.9961. Chromium Bohr ModelThe number of electrons in each of Chromium's shells is 2, 8, 13, 1 and its electron configuration is [Ar] 3d5 4s1. Chromium was first discovered by Louis Nicolas Vauquelin in 1797. It was first isolated in 1798, also by Louis Nicolas Vauquelin. The chromium atom has a radius of 128 pm and a Van der Waals radius of 189 pm. In its elemental form, chromium has a lustrous steel-gray appearance. Elemental ChromiumChromium is the hardest metal element in the periodic table and the only element that exhibits antiferromagnetic ordering at room temperature, above which it tranforms into a paramagnetic solid. The most common source of chromium is chromite ore (FeCr2O4). Due to its various colorful compounds, Chromium was named after the Greek word 'chroma' meaning color. For more information on chromium, including properties, safety data, research, and American Elements' catalog of chromium products, visit the Chromium Information Center.

Material Safety Data Sheet MSDS
Signal Word Danger
Hazard Statements H272-H317-H350i-H410
Hazard Codes O,T,N
Risk Codes 49-8-43-50/53
Safety Precautions 53-45-60-61
RTECS Number N/A
Transport Information UN 1479 5.1/PG 2
WGK Germany 3
Globally Harmonized System of
Classification and Labelling (GHS)
Exclamation Mark-Acute Toxicity Health Hazard Environment-Hazardous to the aquatic environment Flame Over Circle-Oxidizing gases and liquids  

chromic acid,dirubidium salt; Rubidium chromate yellow xtl; dioxido(dioxo)chromium; rubidium(1+)

Typical bulk packaging includes palletized plastic 5 gallon/25 kg. pails, fiber and steel drums to 1 ton super sacks in full container (FCL) or truck load (T/L) quantities. Research and sample quantities and hygroscopic, oxidizing or other air sensitive materials may be packaged under argon or vacuum. Shipping documentation includes a Certificate of Analysis and Material Safety Data Sheet (MSDS). Solutions are packaged in polypropylene, plastic or glass jars up to palletized 440 gallon liquid totes.

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Production Catalog Available in 36 Countries & Languages

Recent Research & Development for Rubidium

  • Eun Hyun Cha, Taek Jeong, Heung-Ryoul Noh, Two-color polarization spectroscopy in V-type configuration in rubidium, Optics Communications, Volume 326, 1 September 2014
  • Radoslaw Chrapkiewicz, Wojciech Wasilewski, Czeslaw Radzewicz, How to measure diffusional decoherence in multimode rubidium vapor memories?, Optics Communications, Volume 317, 15 April 2014
  • Anqing Jiao, Hongping Wu, Shilie Pan, Hongwei Yu, Zhihua Yang, Chen Lei, Synthesis, structure, and characterization of a new rubidium cadmium borate: RbCdB3O6, Journal of Alloys and Compounds, Volume 588, 5 March 2014
  • R. Král, K. Nitsch, V. Babin, J. Šulc, H. Jelínková, Y. Yokota, A. Yoshikawa, M. Nikl, Growth and optical properties of RE-doped ternary rubidium lead chloride single crystals, Optical Materials, Volume 36, Issue 2, December 2013
  • A.V. Anikeenko, N.N. Medvedev, N.F. Uvarov, Molecular dynamics study of ion migration mechanism in rubidium nitrate, Solid State Ionics, Volume 251, 15 November 2013
  • Pawel Krys, Flaviano Testa, Andrzej Trochimczuk, Christian Pin, Jean-Marie Taulemesse, Thierry Vincent, Eric Guibal, Encapsulation of ammonium molybdophosphate and zirconium phosphate in alginate matrix for the sorption of rubidium(I), Journal of Colloid and Interface Science, Volume 409, 1 November 2013
  • Hichri Monia, Zamali Hmida, Khattech Ismail, Heat capacities and enthalpies of fusion of lithium and rubidium nitrates: Heat capacities, enthalpies of fusion and enthalpies of formation of the intermediate compounds Ag0.5Rb0.5NO3 and Li0.5Rb0.5NO3, Thermochimica Acta, Volume 568, 20 September 2013
  • Brian K. Nicholson, Christopher J. Clark, Geoffrey B. Jameson, Shane G. Telfer, Rubidium-templated bowl-shaped isopolyoxoantimonates [RbH11-x(RSb)14O34]x- derived from arylstibonic acids, Inorganica Chimica Acta, Volume 406, 1 September 2013
  • Aiqin Mao, Hua Wang, Renming Pan, Corrigendum to “Coke deactivation of activated carbon-supported rubidium-potassium catalyst for C2F5I gas-phase synthesis” [J. Fluorine Chem. 150 (2013) 21–24], Journal of Fluorine Chemistry, Volume 153, September 2013
  • Aiqin Mao, Hua Wang, Renming Pan, Coke deactivation of activated carbon-supported rubidium–potassium catalyst for C2F5I gas-phase synthesis, Journal of Fluorine Chemistry, Volume 150, June 2013
  • Taek Jeong, Jun Yeon Won, Heung-Ryoul Noh, Line shapes in polarization spectroscopy for the rubidium D1 line in an external magnetic field, Optics Communications, Volume 292, 1 April 2013
  • N. Korneev, Y.M. Torres, Pattern-based optical memory with low power switching in rubidium vapor, Optics Communications, Volume 291, 15 March 2013
  • Lindsay O’Brien Quarrie, The effects of atomic rubidium vapor on the performance of optical windows in Diode Pumped Alkali Lasers (DPALs), Optical Materials, Volume 35, Issue 5, March 2013
  • Berceste Beyribey, Jonathan Hallinder, Finn Willy Poulsen, Nikolaos Bonanos, Mogens Mogensen, Studies of rubidium selenate with secondary phase of RbOH under humidified reducing atmosphere, Journal of Alloys and Compounds, Volume 545, 25 December 2012
  • M. Igarashi, T. Nakano, A. Goto, K. Hashi, T. Shimizu, A. Hanazawa, Y. Nozue, NMR property of rubidium loaded sodalite, Journal of Physics and Chemistry of Solids, Volume 73, Issue 12, December 2012
  • Min Jeong Seo, Heung-Ryoul Noh, Self-rotation of elliptically polarized light in Doppler-broadened rubidium atoms, Optics Communications, Volume 285, Issue 24, 1 November 2012
  • Berceste Beyribey, Jonathan Hallinder, Structural, thermal and electrical studies of a novel rubidium phosphite tellurate compound, Ceramics International, Volume 38, Issue 6, August 2012
  • P. Kulatunga, H.C. Busch, L.R. Andrews, C.I. Sukenik, Two-color polarization spectroscopy of rubidium, Optics Communications, Volume 285, Issue 12, 1 June 2012
  • Si-Cong Tian, Zhi-Hui Kang, Chun-Liang Wang, Ren-Gang Wan, Jun Kou, Hang Zhang, Yun Jiang, Hai-Ning Cui, Jin-Yue Gao, Observation of spontaneously generated coherence on absorption in rubidium atomic beam, Optics Communications, Volume 285, Issue 3, 1 February 2012
  • N.M. Laptash, A.A. Udovenko, T.B. Emelina, Dynamic orientation disorder in rubidium fluorotantalate. Synchronous Ta–O and Ta–F vibrations, Journal of Fluorine Chemistry, Volume 132, Issue 12, December 2011

Recent Research & Development for Chromates

  • Takuhiro Otsuka, Takeshi Akaboshi, Youkoh Kaizu, Anisotropic Energy-Transfer in Encounter Complex in Aqueous Solutions: Ligand Congeniality between Photo-Excited Mixed-Ligand Tris(α,α’-diimine)-ruthenium(II) [Ru(phen)3-n(4dmb)n]2+ and Tris(malonato)chromate(III) [Cr(mal)3]3-, Inorganica Chimica Acta, Available online 11 July 2014
  • Cong Ruan, Kui Xie, Liming Yang, Bin Ding, Yucheng Wu, Efficient carbon dioxide electrolysis in a symmetric solid oxide electrolyzer based on nanocatalyst-loaded chromate electrodes, International Journal of Hydrogen Energy, Volume 39, Issue 20, 3 July 2014
  • Sébastien Pommiers, Jérôme Frayret, Alain Castetbon, Martine Potin-Gautier, Alternative conversion coatings to chromate for the protection of magnesium alloys, Corrosion Science, Volume 84, July 2014
  • Sylvia Britto, P. Vishnu Kamath, Synthesis, structure refinement and chromate sorption characteristics of an Al-rich bayerite-based layered double hydroxide, Journal of Solid State Chemistry, Volume 215, July 2014
  • S.M. El-Sheikh, M.A. Rabah, Optical properties of calcium chromate 1D-nanorods synthesized at low temperature from secondary resources, Optical Materials, Available online 30 June 2014
  • R.K. Gupta, B.R.W. Hinton, N. Birbilis, The effect of chromate on the pitting susceptibility of AA7075-T651 studied using potentiostatic transients, Corrosion Science, Volume 82, May 2014
  • Sébastien Pommiers-Belin, Jérôme Frayret, Arnaud Uhart, JeanBernard Ledeuil, Jean-Charles Dupin, Alain Castetbon, Martine Potin-Gautier, Determination of the chemical mechanism of chromate conversion coating on magnesium alloys EV31A, Applied Surface Science, Volume 298, 15 April 2014
  • Joshua Olusegun Okeniyi, Olugbenga Adeshola Omotosho, Oluseyi Olanrewaju Ajayi, Cleophas Akintoye Loto, Effect of potassium-chromate and sodium-nitrite on concrete steel-rebar degradation in sulphate and saline media, Construction and Building Materials, Volume 50, 15 January 2014
  • Shanshan Xu, Dehua Dong, Yan Wang, Winston Doherty, Kui Xie, Yucheng Wu, Perovskite chromates cathode with resolved and anchored nickel nano-particles for direct high-temperature steam electrolysis, Journal of Power Sources, Volume 246, 15 January 2014
  • Selvakumar Sellaiyan, Anthony E. Hughes, Suzanne V. Smith, Akira Uedono, James Sullivan, Stephen Buckman, Leaching properties of chromate-containing epoxy films using radiotracers, PALS and SEM, Progress in Organic Coatings, Volume 77, Issue 1, January 2014