dioxomolybdenum
Molybdenum(IV) oxide
CAS: 18868-43-4
Molecular Formula: MoO2
dioxomolybdenum - Names and Identifiers
| Name | Molybdenum(IV) oxide |
| Synonyms | dioxomolybdenum Molybdaendioxid diketomolybdenum oxygen(-2) anion Molybdenum dioxide Molybdenum(IV) oxide molybdenum(+4) cation Molybdenum(IV)dioxide Molybdenum oxide (MoO2) MOLYBDENUM(IV) OXIDE (MOO2) Molybdenum(IV)oxide(metalsbasis) |
| CAS | 18868-43-4 |
| EINECS | 242-637-9 |
| InChI | InChI=1/Mo.2O/q+4;2*-2 |
| InChIKey | QXYJCZRRLLQGCR-UHFFFAOYSA-N |
dioxomolybdenum - Physico-chemical Properties
| Molecular Formula | MoO2 |
| Molar Mass | 127.94 |
| Density | 6.47 g/mL at 25 °C (lit.) |
| Melting Point | decomposes [JAN85] |
| Water Solubility | slightly soluble H2SO4; insoluble HCl, HF, and alkalies [HAW93] |
| Appearance | Powder |
| Specific Gravity | 6.47 |
| Color | Red-brown |
| Exposure Limit | ACGIH: TWA 10 mg/m3; TWA 3 mg/m3NIOSH: IDLH 5000 mg/m3 |
| Storage Condition | Room Temprature |
dioxomolybdenum - Risk and Safety
| Hazard Symbols | Xn - Harmful |
| Risk Codes | R20/21/22 - Harmful by inhalation, in contact with skin and if swallowed. R36/37/38 - Irritating to eyes, respiratory system and skin. |
| Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36 - Wear suitable protective clothing. |
| WGK Germany | 1 |
| RTECS | QA4688000 |
| TSCA | Yes |
| HS Code | 28257000 |
dioxomolybdenum - Reference Information
| EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
| use | molybdenum dioxide can be used to prepare molybdenum dioxide sputtering films; In addition, the research results show that molybdenum dioxide film has excellent electrical properties, light properties and smooth physical surface, it can be widely used in light emitting diodes (OLED), liquid crystal display devices (LCD), ion display panels (PDP), field display panels (FED), thin film solar cells, low resistance ohmic contact materials and other electronic materials and semiconductor materials. |
| Preparation | The method for preparing molybdenum dioxide is still to use hydrogen to reduce ammonium dimolybdate or chemically pure molybdenum trioxide or use hydrogen to reduce ammonium dimolybdate and molybdenum trioxide mixture. It is also useful to reduce ammonium secondary molybdate with hydrogen. The reduction is carried out in a rotary furnace, and ammonium dimolybdate can also be added to the boat in a multi-tube furnace. |
Last Update：2024-04-10 22:29:15
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