Cobalt(II) Acetylacetonate Hydrate

CAS 123334-29-2

Product Product Code Order or Specifications
(2N) 99% Cobalt(II) Acetylacetonate Hydrate CO2-ACAC-02-P-XHYD Contact American Elements
(3N) 99.9% Cobalt(II) Acetylacetonate Hydrate CO2-ACAC-03-P-XHYD Contact American Elements
(4N) 99.99% Cobalt(II) Acetylacetonate Hydrate CO2-ACAC-04-P-XHYD Contact American Elements
(5N) 99.999% Cobalt(II) Acetylacetonate Hydrate CO2-ACAC-05-P-XHYD Contact American Elements

Formula CAS No. PubChem SID PubChem CID MDL No. EC No IUPAC Name Beilstein
Re. No.
Co(C5H7O2)2 • xH2O 123334-29-2 34174534 20833133 MFCD00149056 237-855-6 cobalt(2+); (Z)-4-oxopent-2-en-2-olate; hydrate N/A CC(=CC(=O)

PROPERTIES Compound Formula Mol. Wt. Appearance Density

Exact Mass

Monoisotopic Mass Charge MSDS
C10H16CoO5 275.16 Pink powder N/A 275.032969 275.032969 0 Safety Data Sheet

Acetylaceton Formula Diagram (C5H8O2)Cobalt(II) Acetylacetonate is a Cobalt source that is soluble in organic solvents as an organometallic compound (also known as metalorganic, organo-inorganic and metallo-organic Acetylacetonate Packaging, Lab Quantitycompounds). The high purity acetylacetonate anion complexes by bonding each oxygen atom to the metallic cation to form a chelate ring; because of this property, acetylacetonates are commonly used in various catalysts and catalytic reagents for organic synthesis, including the fabrication of various shapes of carbon nanostructures (as demonstrated by a 2013 experiment by researchers at the Leibniz Institute for Solid State and Materials Research Dresden) via the use of chemical vapor deposition (CVD) and laser evaporation techniques. Cobalt Acetylacetonate is one of numerous organo-metallic compounds (also known as metalorganic, organo-inorganic and metallo-organic compounds) sold by American Elements under the tradename AE Organo-Metallics™ for uses requiring non-aqueous solubility such as recent solar energy and water treatment applications. Similar results can sometimes also be achieved with Nanoparticles (also see Nanotechnology and Quantum Dots) and by thin film deposition. Note American Elements additionally supplies many materials as solutions. 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.

Cobalt(Co) atomic and molecular weight, atomic number and elemental symbolCobalt (atomic symbol: Co, atomic number: 27) is a Block D, Group 9, Period 4 element with an atomic weight of 58.933195.Cobalt Bohr Model The number of electrons in each of cobalt's shells is 2, 8, 15, 2 and its electron configuration is [Ar] 3d7 4s2The cobalt atom has a radius of 125 pm and a Van der Waals radius of 192 pm. Cobalt was first discovered by George Brandt in 1732. In its elemental form, cobalt has a lustrous gray appearance. Cobalt is found in cobaltite, erythrite, glaucodot and skutterudite ores. Elemental Cobalt Cobalt produces brilliant blue pigments which have been used since ancient times to color paint and glass. Cobalt is a ferromagnetic metal and is used primarily in the production of magnetic and high-strength superalloys. Co-60, a commercially important radioisotope, is useful as a radioactive tracer and gamma ray source. The origin of the word Cobalt comes from the German word "Kobalt" or "Kobold," which translates as "goblin," "elf" or "evil spirit." For more information on cobalt, including properties, safety data, research, and American Elements' catalog of cobalt products, visit the Cobalt Information Center.

Material Safety Data Sheet MSDS
Signal Word Danger
Hazard Statements H302-H312-H318-H332-H351
Hazard Codes Xn
Risk Codes 20/21/22-40-41
Safety Precautions 7-22-26-37/39
RTECS Number N/A
Transport Information N/A
WGK Germany 3
Globally Harmonized System of
Classification and Labelling (GHS)
Exclamation Mark-Acute Toxicity Health Hazard Corrosion-Corrosive to metals    

(3Z)-4-Hydroxy-3-penten-2-one - cobalt hydrate (2:1:1), Bis(2,4-pentanedionato)cobalt(II) Dihydrate, Cobalt,bis(2,4-pentanedionato-kO,kO')-, hydrate, (SP-4-1)- (9CI), Bis(acetylacetonato)cobalt hydrate

Show Me MORE Forms of Cobalt

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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Recent Research & Development for Cobalt

  • Changbai Liu, Xiao Chi, Xingyi Liu, Shenglei Wang, Comparison of ethanol sensitivity based on cobalt–indium combined oxide nanotubes and nanofibers, Journal of Alloys and Compounds, Volume 616, 15 December 2014
  • E.M.S. Barbieri, E.P.C. Lima, M.F.F. Lelis, M.B.J.G. Freitas, Recycling of cobalt from spent Li-ion batteries as ß-Co(OH)2 and the application of Co3O4 as a pseudocapacitor, Journal of Power Sources, Volume 270, 15 December 2014
  • Baiju Vidyadharan, Radhiyah Abd Aziz, Izan Izwan Misnon, Gopinathan M. Anil Kumar, Jamil Ismail, Mashitah M. Yusoff, Rajan Jose, High energy and power density asymmetric supercapacitors using electrospun cobalt oxide nanowire anode, Journal of Power Sources, Volume 270, 15 December 2014
  • Chien-Te Hsieh, Yu-Fu Chen, Chun-Ting Pai, Chung-Yu Mo, Synthesis of lithium nickel cobalt manganese oxide cathode materials by infrared induction heating, Journal of Power Sources, Volume 269, 10 December 2014
  • John Wang, Justin Purewal, Ping Liu, Jocelyn Hicks-Garner, Souren Soukazian, Elena Sherman, Adam Sorenson, Luan Vu, Harshad Tataria, Mark W. Verbrugge, Degradation of lithium ion batteries employing graphite negatives and nickel–cobalt–manganese oxide + spinel manganese oxide positives: Part 1, aging mechanisms and life estimation, Journal of Power Sources, Volume 269, 10 December 2014
  • E.M.S. Barbieri, E.P.C. Lima, S.J. Cantarino, M.F.F. Lelis, M.B.J.G. Freitas, Recycling of spent ion-lithium batteries as cobalt hydroxide, and cobalt oxide films formed under a conductive glass substrate, and their electrochemical properties, Journal of Power Sources, Volume 269, 10 December 2014
  • Guiqiang Wang, Juan Zhang, Shuai Kuang, Shaomin Liu, Shuping Zhuo, The production of cobalt sulfide/graphene composite for use as a low-cost counter-electrode material in dye-sensitized solar cells, Journal of Power Sources, Volume 269, 10 December 2014
  • Mohamed Bakr Mohamed, M. Yehia, Cation distribution and magnetic properties of nanocrystalline gallium substituted cobalt ferrite, Journal of Alloys and Compounds, Volume 615, 5 December 2014
  • R.K. Panda, R. Muduli, S.K. Kar, D. Behera, Dielectric relaxation and conduction mechanism of cobalt ferrite nanoparticles, Journal of Alloys and Compounds, Volume 615, 5 December 2014
  • J.J. Ruan, C.P. Wang, S.Y. Yang, R. Kainuma, X.J. Liu, New cobalt-based intermetallic compound Co2VMn with B2 structure and phase equilibria in the Co–V–Mn ternary system, Journal of Alloys and Compounds, Volume 615, 5 December 2014
  • Hui Fan, Michael Keane, Prabhakar Singh, Minfang Han, Electrochemical performance and stability of lanthanum strontium cobalt ferrite oxygen electrode with gadolinia doped ceria barrier layer for reversible solid oxide fuel cell, Journal of Power Sources, Volume 268, 5 December 2014
  • Panpan Xu, Ke Ye, Dianxue Cao, Jichun Huang, Tong Liu, Kui Cheng, Jinling Yin, Guiling Wang, Facile synthesis of cobalt manganese oxides nanowires on nickel foam with superior electrochemical performance, Journal of Power Sources, Volume 268, 5 December 2014
  • Hee-Je Kim, Su-Weon Kim, Chandu V.V.M. Gopi, Soo-Kyoung Kim, S. Srinivasa Rao, Myeong-Soo Jeong, Improved performance of quantum dot-sensitized solar cells adopting a highly efficient cobalt sulfide/nickel sulfide composite thin film counter electrode, Journal of Power Sources, Volume 268, 5 December 2014
  • Xuefei Gong, J.P. Cheng, Fu Liu, Li Zhang, Xiaobin Zhang, Nickel–Cobalt hydroxide microspheres electrodepositioned on nickel cobaltite nanowires grown on Ni foam for high-performance pseudocapacitors, Journal of Power Sources, Volume 267, 1 December 2014
  • Pouyan Paknahad, Masoud Askari, Milad Ghorbanzadeh, Application of sol–gel technique to synthesis of copper–cobalt spinel on the ferritic stainless steel used for solid oxide fuel cell interconnects, Journal of Power Sources, Volume 266, 15 November 2014
  • Alexander Schenk, Christoph Grimmer, Markus Perchthaler, Stephan Weinberger, Birgit Pichler, Christoph Heinzl, Christina Scheu, Franz-Andreas Mautner, Brigitte Bitschnau, Viktor Hacker, Platinum–cobalt catalysts for the oxygen reduction reaction in high temperature proton exchange membrane fuel cells – Long term behavior under ex-situ and in-situ conditions, Journal of Power Sources, Volume 266, 15 November 2014
  • Yaoming Xiao, Wei-Yan Wang, Shu-Wei Chou, Tsung-Wu Lin, Jeng-Yu Lin, In situ electropolymerization of polyaniline/cobalt sulfide decorated carbon nanotube composite catalyst toward triiodide reduction in dye-sensitized solar cells, Journal of Power Sources, Volume 266, 15 November 2014
  • Robert Iano?, Highly sinterable cobalt ferrite particles prepared by a modified solution combustion synthesis, Materials Letters, Volume 135, 15 November 2014
  • Songying Liu, Ling Zhou, Liyuan Yao, Liya Chai, Li Li, Guo Zhang, Kankan, Keying Shi, One-pot reflux method synthesis of cobalt hydroxide nanoflake-reduced graphene oxide hybrid and their NOx gas sensors at room temperature, Journal of Alloys and Compounds, Volume 612, 5 November 2014
  • M.B. Lourenço, M.D. Carvalho, P. Fonseca, T. Gasche, G. Evans, M. Godinho, M.M. Cruz, Stability and magnetic properties of cobalt nitrides, Journal of Alloys and Compounds, Volume 612, 5 November 2014

Recent Research & Development for Acetylacetonates

  • Sudipta Chatterjee, Sutanuva Mandal, Sucheta Joy, Chen-Hsiung Hung, Sreebrata Goswami, ortho-Carom–N bond fusion in aniline associated with electrophilic chlorination reactions at ruthenium(III) coordinated acetylacetonates, Inorganica Chimica Acta, Volume 374, Issue 1, 1 August 2011
  • János Madarász, Shoji Kaneko, Masayuki Okuya, György Pokol, Comparative evolved gas analyses of crystalline and amorphous titanium(IV)oxo-hydroxo-acetylacetonates by TG-FTIR and TG/DTA-MS, Thermochimica Acta, Volume 489, Issues 1–2, 20 May 2009
  • Satoshi Yoda, Yoko Mizuno, Takeshi Furuya, Yoshihiro Takebayashi, Katsuto Otake, Tomoya Tsuji, Toshihiko Hiaki, Solubility measurements of noble metal acetylacetonates in supercritical carbon dioxide by high performance liquid chromatography (HPLC), The Journal of Supercritical Fluids, Volume 44, Issue 2, March 2008
  • M. Aslam Siddiqi, Rehan A. Siddiqui, Burak Atakan, Thermal stability, sublimation pressures and diffusion coefficients of some metal acetylacetonates, Surface and Coatings Technology, Volume 201, Issues 22–23, 25 September 2007
  • María R. Pedrosa, Jaime Escribano, Rafael Aguado, Virginia Díez, Roberto Sanz, Francisco J. Arnáiz, Dinuclear oxomolybdenum(VI) acetylacetonates: Crystal and molecular structure of Mo2O5(acac)2L2 (L = D2O, DMF), Polyhedron, Volume 26, Issue 14, 31 August 2007
  • S.V. Samoilenkov, M.A. Stefan, G. Wahl, MOCVD of thick YSZ coatings using acetylacetonates, Surface and Coatings Technology, Volume 192, Issue 1, 1 March 2005
  • Thomas Behrsing, Alan M Bond, Glen B Deacon, Craig M Forsyth, Maria Forsyth, Kalpana J Kamble, Brian W Skelton, Allan H White, Cerium acetylacetonates—new aspects, including the lamellar clathrate [Ce(acac)4]·10H2O, Inorganica Chimica Acta, Volume 352, 6 August 2003
  • R Leboda, J Skubiszewska-Zieba, J Rynkowski, Preparation and porous structure of carbon–silica adsorbents obtained on the basis of Ti, Co, Ni, Cr, Zn and Zr acetylacetonates and acetylacetone, Colloids and Surfaces A: Physicochemical and Engineering Aspects, Volume 174, Issue 3, 1 December 2000
  • V.M. Gun'ko, R. Leboda, J. Skubiszewska-Zi?ba, J. Rynkowski, Silica Gel Modified Due to Pyrolysis of Acetylacetone and Metal (Ti, Cr, Co, Ni, Zn, Zr) Acetylacetonates, Journal of Colloid and Interface Science, Volume 231, Issue 1, 1 November 2000
  • V.G Isakova, I.A Baidina, N.B Morozova, I.K Igumenov, ?-Halogenated iridium(III) acetylacetonates, Polyhedron, Volume 19, Issue 9, 15 May 2000
  • V.V. Turov, R. Leboda, J. Skubiszewska-Zi ?, Changes in Hydration Properties of Silica Gel in a Process of Its Carbonization by Pyrolysis of Acetylacetone Zn (Ti) Acetylacetonates, Journal of Colloid and Interface Science, Volume 206, Issue 1, 1 October 1998
  • Claudia Neyertz, María Volpe, Preparation of binary palladium-vanadium supported catalysts from metal acetylacetonates, Colloids and Surfaces A: Physicochemical and Engineering Aspects, Volume 136, Issues 1–2, 30 April 1998
  • Shoichi Katsuta, Tomohiko Nakatani, Evaluation of Distribution Constants of Lanthanoid(III) Acetylacetonates between Sodium Dodecyl Sulfate Micelles and Water by Micellar Capillary Electrophoresis, Journal of Colloid and Interface Science, Volume 195, Issue 2, 15 November 1997
  • Z. Zhang, Y. Tanigami, R. Terai, Catalytic effect of acetylacetonates on gel formation of CH3SiO32, Journal of Non-Crystalline Solids, Volume 191, Issue 3, 1 December 1995
  • Irina G. Zaitzeva, Nataliya P. Kuzmina, Larissa I. Martynenko, The volatile rare earth element tetrakis-acetylacetonates, Journal of Alloys and Compounds, Volume 225, Issues 1–2, 15 July 1995
  • J.C. Machado, C.F. Carvalho, W.F. Magalhães, A. Marques Netto, J.Ch. Abbé, G. Duplâtre, Positronium formation and inhibition in binary solid solutions on Al(III) and Co(III) tris(acetylacetonates), Chemical Physics, Volume 170, Issue 2, 1 March 1993
  • I.C. McNeill, J.J. Liggat, The effect of metal acetylacetonates on the thermal degradation of poly(methyl methacrylate): Part II—Manganese (III) acetylacetonate, Polymer Degradation and Stability, Volume 37, Issue 1, 1992
  • Pilar Gómez-Sal, Avelino Martín, Miguel Mena, Pascual Royo, Ricardo Serrano, Monopentamethylcyclopentadienyltitanium(IV) halo-alkoxides, alkyl-alkoxides and acetylacetonates, Journal of Organometallic Chemistry, Volume 419, Issues 1–2, 12 November 1991
  • I.C. McNeill, J.J. Liggat, The effect of metal acetylacetonates on the thermal degradation of poly(methyl methacrylate)—I. Cobalt (III) acetylacetonate, Polymer Degradation and Stability, Volume 29, Issue 1, 1990
  • B.L. Khandelwal, A.K. Singh, N.S. Bhandari, Preparative and spectral investigations on C3 bonded acetylacetonates of tellurium(IV), Journal of Organometallic Chemistry, Volume 320, Issue 3, 17 February 1987