Iridium(IV) oxide powder
Iridium(IV) oxide
CAS: 12030-49-8
Molecular Formula: IrO2
Iridium(IV) oxide powder - Names and Identifiers
| Name | Iridium(IV) oxide |
| Synonyms | dioxoiridium IRIDIUM OXIDE iridium dioxide Iridium dioxide Iridium(IV) oxide IRIDIUM(IV) OXIDE Iridium(Ⅱ) dioxide Iridiumoxidepowder iridium tetrahydroxide Iridium(IV) oxide powder Iridiumoxideblueblackpowder |
| CAS | 12030-49-8 |
| EINECS | 234-743-9 |
| InChI | InChI=1/Ir.4H2O/h;4*1H2/p-4 |
Iridium(IV) oxide powder - Physico-chemical Properties
| Molecular Formula | IrO2 |
| Molar Mass | 224.22 |
| Density | 11,7 g/cm3 |
| Melting Point | 1100°C (dec.) |
| Boling Point | 100°C at 760 mmHg |
| Water Solubility | INSOLUBLE |
| Solubility | Soluble in water (0.002 mg/ml at 20 °C). |
| Vapor Presure | 24.5mmHg at 25°C |
| Appearance | Brown to black powder |
| Specific Gravity | 11.66 |
| Color | Black |
| Storage Condition | under inert gas (nitrogen or Argon) at 2-8°C |
| MDL | MFCD00011065 |
| Use | Used as a spectral purity reagent |
Iridium(IV) oxide powder - Risk and Safety
| Risk Codes | R36/38 - Irritating to eyes and skin. R8 - Contact with combustible material may cause fire |
| Safety Description | S17 - Keep away from combustible material. S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S37/39 - Wear suitable gloves and eye/face protection |
| WGK Germany | 3 |
| TSCA | Yes |
| HS Code | 28259085 |
| Hazard Class | 5.1 |
Iridium(IV) oxide powder - Nature
Open Data Verified Data
Iridium is a silver-white hard and brittle metal (face-centered cubic crystal), and iridium powder is gray powder. Melting point 2410 °c. Boiling point 4130 °c. The relative density was 22. 42. Slowly soluble in aqua regia, insoluble in water, acid and alkali.
Last Update：2025-06-10 22:55:16
Iridium(IV) oxide powder - Preparation Method
Open Data Verified Data
industrial production can be produced from ore with dry method; Copper, nickel sulfide ore can also be prepared from copper, nickel production process of by-products as raw materials, prepared by wet smelting.
Wet Method: the residual components after nickel and copper have been extracted are used as raw materials, and aqua regia is added for extraction. Platinum and palladium are extracted, and then rhodium, ruthenium and osmium are extracted by treatment from the residue. Finally, the residue is added to the king water treatment, and the obtained solution is added to ammonium chloride for reaction to generate ammonium chloroiridium precipitate. Upon recrystallization, ammonium chloroiridium was reduced with hydrogen to produce approximately 99.9% of the finished Iridium.
Last Update：2022-01-01 11:06:13
Iridium(IV) oxide powder - Application
Open Data Verified Data
as a catalyst for hydrogenation, dehydrogenation and oxidation of organic compounds in the chemical industry. In the electronic and electrical industry, it is used to manufacture resistance wires, thermocouples, Iridium cathode wires, relays, electrical contacts and printed circuits. High-hardness Iridium-platinum alloys are commonly used to make gyroscope conductive rings, nibs, clocks, instrument bearings, etc. The international standard meter is made of an alloy of 10% iridium and 90% platinum. Iridium can also be used as a high temperature reaction crucible.
Last Update：2025-08-19 16:24:40
Iridium(IV) oxide powder - Safety
Open Data Verified Data
The product is packed in a polyethylene plastic bottle with a plastic sealing cover, tightly sealed, and put into the box for packaging or outer packaging. Packaging units (g/bottle) 1, 5, 10, 25, 50, 100, 250, 500, 1000. It should be stored in a dry and clean warehouse, and cannot be mixed with flammable materials. During transport to prevent rain and moisture. When loading and unloading, it should be handled with care to prevent severe collision, so as to avoid the rupture of the packaging bottle.
Last Update：2025-06-10 22:55:16
Iridium(IV) oxide powder - Reference Information
| introduction | iridium oxide is a black tetragonal or blue crystal with rutile lattice. Relative density 3.15. Heat to 1100 ℃ for decomposition. Its hydrate is indigo blue crystal, and crystal water is removed at 350 ℃. Slightly soluble in water, insoluble in acid and alkali. |
| preparation | heating iridium powder to 107 ℃ in air or oxygen, or adding strong alkali to boiling (IrCl6)2-solution to generate blue precipitate, which is dried in vacuum, then the hydrate is completely dehydrated in nitrogen at 350 ℃. |
| use | used as spectral purity reagent |
| production method | heat up iridium powder in air or oxygen to obtain iridium dioxide. Carefully add alkali to the boiling [IrCl6]2-solution until the brown color just turns blue, and dry the resulting blue precipitate in a vacuum into a blue powder, which is equivalent to Ir(OH)4 or IrO2 · 2H2O. This powder is heated to 350°C in nitrogen to completely dehydrate to produce black IrO2. |
| NIST chemical information | The information is: webbook.nist.gov provides (external link) |
| EPA chemical information | The information is: offered by ofmpub.epa.gov (external link) |
Last Update：2024-04-10 22:29:15
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View History
Iridium(IV) oxide powder
2-Furfuryl methyl sulphide
Acid complex pink B
BIOTIN 2% WS
NICKEL(II) HYDROXYACETATE
poly(L-lysine) macromolecule
Dihydrocinnamic aldehyde
GOMISING
卡巴胆碱
2-Furfuryl methyl sulphide
Acid complex pink B
BIOTIN 2% WS
NICKEL(II) HYDROXYACETATE
poly(L-lysine) macromolecule
Dihydrocinnamic aldehyde
GOMISING
卡巴胆碱