HuagongsheHuagongshe Chemistry Print Report · For research reference only
HCID 82844Generated: October 23, 2026
Platinum oxide (PtO)
Nsc128165 · Platinum monoxide · Platinum oxide (PtO)
https://huagongshe.com/en/chemical/82844
Identifiers & Physical Properties
| CAS No. | 11129-89-8 |
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| Molecular formula | OPt |
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| Average molar mass | 211.08 g/mol |
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| Monoisotopic mass | 210.95970572 g/mol |
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| SMILES | [O]=[Pt] |
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| InChIKey | MUMZUERVLWJKNR-UHFFFAOYSA-N |
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| PubChem CID | 82844 |
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| DTXSID | DTXSID1065188 |
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Chemical & Physical Properties
| Topological polar surface area | 17.1 |
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| Hydrogen bond donors | 0 |
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| Hydrogen bond acceptors | 1 |
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| Rotatable bonds | 0 |
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| Heavy atoms | 2 |
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| Formal charge | 0 |
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| Complexity | 2 |
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| Physical Description | CBI |
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| Melting point | decomposes at 500℃ [KIR82] |
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| Density | 14.100 |
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| Solubility | insoluble in H2O, ethanolsoluble in aquaregiainsoluble H2O, alcoholsoluble aqua regia [KIR82] |
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| Physical state | black tetragonal crystals |
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| Color | black tetragonal crystals, crystalline |
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| crystal system | square |
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| Space group | P42/mmc |
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| Lattice constant | a/nm |
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| GHS hazard statements | H413 |
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| TSCA inventory status | TSCA listed |
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| REACH registrations | Active |
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Safety & Regulations
| Regulatory information | Platinum oxide (PtO) is listed on the EPA's Chemical Data Reporting (CDR) system. Manufacturers and importers of Platinum oxide (PtO) are required to report information about their production and use of this chemical to the EPA under the Toxic Substances Control Act (TSCA). (40 eCFR Part 711) |
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| TSCA inventory status | TSCA listed |
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| GHS hazard statements | H413 |
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| REACH registrations | Active |
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