Osmium

Description Formula CAS # Metal % Formula weight
Anhydrous
(hydrated)
Osmium Sponge Os 4/2/7440 99.95 190.23
Osmium (III) Chloride Hydrate OsCl3.3H2O 14996-60-2 53-55 (64.1 anhyd.) 296.59 (350.6)
Ammonium Hexachloro Osmate (IV) (NH4)2OsCl6 12125-08-5 43.3 439
Potassium Hexachloro Osmate (IV) K2OsCl6 16871-60-6 39.5 481.12
Sodium Hexachloro Osmate (IV) Hydrate Na2OsCl6.2H2O 1307-81-9 42.4 448.9
Potassium Osmium (VI) Oxide Hydrate [Potassium Osmate] K2OsO4.2H2O or K2[OsO2(OH)4] 19718-36-610022-66-9 51.6 – 57.2 332.42 (368.43)
Osmium (VIII) Oxide [Osmium Tetroxide] OsO4 20816-12-0 74.9 254.2
Pentaammine Osmium (III) Trifluoromethanesulfonate [CF3SO3Os(NH3)5](OSO2CF3)2 83781-30-0 26.3 722.56
Pentaammine(dinitrogen) Osmium (II) Chloride [Os(N2)(NH3)5]Cl2 20611-50-1 50.8 374.27
Potassium Nitridotrioxo Osmium (VIII) [Potassium Osmiamate] KOsO3(N) 21774-03-8 65.3 291.3
Tetraamminedioxo Osmium (VI) Chloride [OsO2(NH3)4]Cl2 18496-70-3 52.7 361.26
Osmium (IV) Oxide Anhydrous OsO2 12036-02-1 85.6 222.2
Osmium (IV) Oxide Hydrate OsO2.1H2O 89520-34-3 >73 -240.24
Osmium (VIII) Oxide (standard <2% aqueous solution) OsO4 in H2O 20816-12-0 <2
Osmium (VIII) Oxide (standard <4% aqueous solution) OsO4 in H2O 20816-12-0 <4
Osmium Powder -20 Mesh sponge Os 4/2/7440 99.9 190.23
Osmium Powder -100 Mesh sponge Os 4/2/7440 99.9 190.23
Osmium Powder -200 Mesh sponge Os 4/2/7440 99.9 190.23
Osmium Powder -325 Mesh sponge Os 4/2/7440 99.9 190.23
Ammonium HexabromoOsmate (IV) (NH4)2OsBr6 24598-62-7 26.9 705.7
Potassium Osmate(VI) Anhydrous K2OsO4 99362-52-0 57.2 332.4
Osmium (III) Chloride Anhydrous OsCl3 13444-93-4 64.1 296.56
Bis(2,2-bipyridyl)dichloro Osmium(II) (C10H8N2)2OsCl2 15702-72-4 33.2 573.43
Osmium Powder -60 Mesh sponge Os 4/2/7440 99.9 190.2
Bis(pentamethylcyclopentadienyl) Osmium (II) [(CH3)5C5]2Os 100603-32-5 41.3 460.66
Bis(cyclopentadienyl)Osmium(II) Os(C5H5)2 1273-81-0 59.4 320.4
Dodecacarbonyltetra-m-hydridotetra Osmium (CO)12H4Os4 12375-04-1 69.1 1100.96
Osmium (0) Carbonyl Os3(CO)12 15696-40-9 62.9 906.73
Oxobis(2,3 dimethylbutane-2,3 diolato) Osmium (VI) (C6H12O2)2OsO NA 43.4 438.5
Tetra(ortho-tolyl) Osmium (IV) (C7H7)4Os NA 34.3 554.7
Ethane-1,2-diolato) dioxo bis(pyridine) Osmium (VI) (C2H4O2)(C5H5N)2O2Os 39019-05-1 43.2 440.45
(2,3-Dimethylbutane-2,3-diolato) dioxo Osmium (VI) Dimer [(C6H12O2)O(u-O)Os]2 50649-09-7 56.2 676.69
Dichlorobis(4,4-dimethylbipyridine) Osmium (Il) C24H24Cl2N4Os NA 30.21 629.62
Osmium(VIII)Oxide 2.5% in tert-Butanol (stabilized) OsO4 in t-Butanol 20816-12-0 2.5 NA