Iridium Powder

CAS 7439-88-5
Linear Formula: Ir
MDL Number: MFCD00011062
EC No.: 231-095-9

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(2N) 99% Iridium Powder IR-M-02-P Pricing
(3N) 99.9% Iridium Powder IR-M-03-P Pricing
(4N) 99.99% Iridium Powder IR-M-04-P Pricing
(5N) 99.999% Iridium Powder IR-M-05-P Pricing


Molecular Weight 192.22
Appearance Gray powder
Melting Point 2466 °C
Boiling Point 4130 °C
Density 22.56 g/cm3
Thermal Expansion

6.4 µm/(m·K)

Poisson Ratio 0.26
Vickers Hardness 1760 MPa
Young's Modulus 528 GPa
Tensile Strength 2000 MPa
Thermal Conductivity 1.47 W/m ·K
Electronegativity 2.2 Paulings
Specific Heat 133 J/kg ·K
Heat of Vaporization 564 kJ/mol
Heat of Fusion 41.12 kJ/mol

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


Ultra High Purity Metal PowdersAmerican Elements specializes in producing high purity Iridium Powder with the smallest possible average grain sizes for use in preparation of pressed and bonded sputtering targets and in Chemical Vapor Deposition (CVD) and Physical Vapor Deposition (PVD) processes including Thermal and Electron Beam (E-Beam) Evaporation, Low Temperature Organic Evaporation, Atomic Layer Deposition (ALD), Metallic-Organic and Chemical Vapor Deposition (MOCVD). Powders are also useful in any application where high surface areas are desired such as water treatment and in fuel cell and solar applications. Nanoparticles also produce very high surface areas. Our standard powder particle sizes average in the range of - 325 mesh, - 100 mesh, 10-50 microns and submicron (< 1 micron). We can also provide many materials in the nanoscale range. Materials are produced using crystallization, solid state and other ultra high purification processes such as sublimation. 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 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. 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. We also produce Iridium as rod, ingot, pieces, pellets, disc, granules, wire, and in compound forms, such as oxide. Other shapes are available by request.



Chemical Identifiers

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

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 Safety Data Sheet (SDS). Solutions are packaged in polypropylene, plastic or glass jars up to palletized 440 gallon liquid totes, and 36,000 lb. tanker trucks.

Related Products & Element Information

See 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

Hexakis terpyridine fullerene ligand and six fold ruthenium, iridium and iron complexes. Synthesis and electrochemical properties., Bräse, Stefan, Yan Weibo, Rethore Celine, Menning Sebastian, Brenner-Weiß Gerald, Muller Thierry, and Pierrat Philippe , Chemistry, 2016 May 18, (2016)

Highly Enantioselective Iridium-Catalyzed Hydrogenation of Cyclic Enamides., Salomó, Ernest, Orgué Sílvia, Riera Antoni, and Verdaguer Xavier , Angew Chem Int Ed Engl, 2016 May 17, (2016)

Cesium Carboxylate-Promoted Iridium Catalyzed C-H Amidation/Cyclization with 2,2,2-Trichloroethoxycarbonyl Azide., Zhang, Tao, Wang Zhen, Hu Xuejiao, Yu Meng, Deng Tianning, Li Guigen, and Lu Hongjian , J Org Chem, 2016 May 16, (2016)

Phase diagram and physical properties of iridium tetraboride from first principles., Li, Xiaofeng, Wang Haiyan, Lv Jian, and Liu Zhongli , Phys Chem Chem Phys, 2016 May 14, Volume 18, Issue 18, p.12569-75, (2016)

Bond Fission and Non-Radiative Decay in Iridium(III) Complexes., Zhou, Xiuwen, Burn Paul L., and Powell Benjamin J. , Inorg Chem, 2016 May 13, (2016)

Iridium(iii)-catalyzed regioselective C7-sulfonamidation of indoles., Song, Zengqiang, and Antonchick Andrey P. , Org Biomol Chem, 2016 May 13, (2016)

Long-Term Lysosomes Tracking with a Water-Soluble Two-Photon Phosphorescent Iridium(III) Complex., Qiu, Kangqiang, Huang Huaiyi, Liu Bingyang, Liu Yukang, Huang Ziyi, Chen Yu, Ji Liangnian, and Chao Hui , ACS Appl Mater Interfaces, 2016 May 13, (2016)

Immobilization and electrochemical properties of ruthenium and iridium complexes on carbon electrodes., Gupta, Ayush, Blakemore James D., Brunschwig Bruce S., and Gray Harry B. , J Phys Condens Matter, 2016 Mar 9, Volume 28, Issue 9, p.094002, (2016)

Ultrafast excited state dynamics of iridium(iii) complexes and their changes upon immobilisation onto titanium dioxide layers., Tschierlei, Stefanie, Neubauer Antje, Rockstroh Nils, Karnahl Michael, Schwarzbach Patrick, Junge Henrik, Beller Matthias, and Lochbrunner Stefan , Phys Chem Chem Phys, 2016 Mar 23, (2016)