Iridium Chunk



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Product Code Product Request Quote
IR-M-02-CK (2N) 99% Iridium Chunk Request
IR-M-03-CK (3N) 99.9% Iridium Chunk Request
IR-M-04-CK (4N) 99.99% Iridium Chunk Request
IR-M-05-CK (5N) 99.999% Iridium Chunk Request


High Purity ChunkAmerican Elements specializes in producing high purity Iridium Chunks are produced using crystallization, solid state and other ultra high purification processes such as sublimation. Standard Chunk pieces are amorphous uniform pieces ranging in size from 5-15 mm. American Elements specializes in producing custom compositions for commercial and research applications and for new proprietary technologies. American Elements also casts any of the rare earth metals and most other advanced materials into granules, rod, bar or plate form, as well as other machined shapes and through other processes such as nanoparticles and in the form of solutions and organometallics. We also produce Iridium as rod, pellets, powder, pieces, disc, ingot, wire, and in compound forms, such as oxide. Other shapes are available by request.

Chemical Identifiers

Formula Ir
CAS 7439-88-5
Pubchem CID 23924
MDL MFCD00011062
EC No. 231-095-9
Beilstein Registry No. N/A
InchI Identifier InChI=1S/Ir


Molecular Weight 192.22
Appearance Gray
Melting Point 2410 °C
Boiling Point 4130 °C
Density 22.42 g/cm3
Tensile Strength N/A
Thermal Conductivity 1.47 W/cm/K @ 298.2 K
Electronegativity 2.2 Paulings
Specific Heat 0.0317 Cal/g/K @ 25 °C
Heat of Vaporization 152 K-cal/gm atom at 4130 °C
Heat of Fusion 6.6 Cal/gm mole

Health & Safety Info  |  MSDS / SDS

Signal Word Danger
Hazard Statements H228-H319
Hazard Codes F,Xi
Risk Codes 13455
Safety Statements 16-26
RTECS Number N/A
Transport Information UN 3089 4.1/PG 2
WGK Germany 3
Globally Harmonized System of Classification and Labelling (GHS) N/A

Packaging Specifications

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.

Related Products

IrSee more Iridium products. Iridium (atomic symbol: Ir, atomic number: 77) is a Block D, Group 9, Period 6 element with an atomic weight of 192.217. The number of electrons in each of iridium's shells is [2, 8, 18, 32, 15, 2] and its electron configuration is [Xe] 4f14 5d7 6s2. Iridium Bohr ModelThe iridium atom has a radius of 136 pm and a Van der Waals radius of 202 pm. Iridium was discovered and first isolated by Smithson Tennant in 1803. In its elemental form, Iridium has a silvery white appearance. Iridium is a member of the platinum group of metals.Elemental Iridium It is the most corrosion resistant metal known and is the second-densest element (after osmium). It will not react with any acid and can only be attacked by certain molten salts, such as molten sodium chloride. Iridium is found as an uncombined element and in iridium-osmium alloys. Iridium's name is derived from the Greek goddess Iris, personification of the rainbow, on account of the striking and diverse colors of its salts.


Recent Research & Development for Iridium

  • The dual role of borohydride depending on reaction temperature: synthesis of iridium and iridium oxide. Chakrapani K, Sampath S. Chem Commun (Camb). 2015 May 15.
  • A bimetallic iridium(ii) catalyst: [{Ir(IDipp)(H)}2][BF4]2 (IDipp = 1,3-bis(2,6-diisopropylphenylimidazol-2-ylidene)). Rubio-Pérez L, Iglesias M, Munárriz J, Polo V, Sanz Miguel PJ, Pérez-Torrente JJ, Oro LA. Chem Commun (Camb). 2015 May 20.
  • Introduction of luminescent rhenium(i), ruthenium(ii), iridium(iii) and rhodium(iii) systems into rhodamine-tethered ligands for the construction of bichromophoric chemosensors. Wang C, Lam HC, Zhu N, Wong KM. Dalton Trans. 2015 May 19.
  • On the Extreme Oxidation States of Iridium. Pyykkö P, Xu WH. Chemistry. 2015 May 15.
  • Iridium-Catalyzed Enantioselective Allylic Alkylation with Functionalized Organozinc Bromides. Hamilton JY, Sarlah D, Carreira EM. Angew Chem Int Ed Engl. 2015 May 12.
  • Dual Inhibition and Monitoring of Beta-Amyloid Fibrillation by a Luminescent Iridium(III) Complex. Wong CY, Chung LH, He B, Leung CH, Ma DL. Curr Alzheimer Res. 2015 May 4.
  • Iridium Oxide Coatings with Templated Porosity as Highly Active Oxygen Evolution Catalysts: Structure-Activity Relationships. Bernicke M, Ortel E, Reier T, Bergmann A, Ferreira de Araujo J, Strasser P, Kraehnert R. ChemSusChem. 2015 May 8.
  • Catalyst-Controlled Regiodivergent CH Borylation of Multifunctionalized Heteroarenes by Using Iridium Complexes. Sasaki I, Taguchi J, Hiraki S, Ito H, Ishiyama T. Chemistry. 2015 May 12.
  • Iridium-Catalyzed Selective Hydrogenation of 3-Hydroxypyridinium Salts: A Facile Synthesis of Piperidin-3-ones. Huang WX, Wu B, Gao X, Chen MW, Wang B, Zhou YG. Org Lett. 2015 Apr 3: Org Lett
  • Binuclear platinum-iridium complexes: synthesis, reactivity and luminescence. Sterenberg BT, Wrigley CT, Puddephatt RJ. Dalton Trans. 2015 Mar 10

Free Test Sample Program

We recognize many of our customers are purchasing small quantities directly online as trial samples in anticipation of placing a larger future order or multiple orders as a raw material for production. Since our primary business is the production of industrial quantities and/or highly consistent batches which can be used for commercial production and purchased repeatedly in smaller quantity, American Elements offers trial samples at no charge on the following basis. Within 6 months of purchasing materials directly online from us, you have the option to refer back to that order and advise that it is the intention of your company, institution or lab to either purchase a larger quantity, purchase the material in regular intervals or purchase more on some other basis.

We will then evaluate your future needs and assuming the quantity or number of future purchases qualify, we will fully credit your purchase price with the next order. Because of the many variables in the quantity and number of orders you may place, it is impossible to evaluate whether your future order(s) will qualify for this program prior to your placing your next order. Please know American Elements strongly desires to make this free sample program available to you and will make every effort to do so once your next order is placed.