Introduction：Basic information about CAS 73819-76-8|5-Ethynyl-2-benzofuran-1,3-dione, including its chemical name, molecular formula, synonyms, physicochemical properties, and safety information, etc.
| Common Name | 5-Ethynyl-2-benzofuran-1,3-dione |
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| CAS Number | 73819-76-8 | Molecular Weight | 172.137 |
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| Density | 1.4±0.1 g/cm3 | Boiling Point | 352.5±25.0 °C at 760 mmHg |
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| Molecular Formula | C10H4O3 | Melting Point | 125ºC |
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| MSDS | / | Flash Point | 175.6±20.4 °C |
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Names
| Name | 4-Ethynylphthalic Anhydride |
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| Synonym | More Synonyms |
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Chemical & Physical Properties
| Density | 1.4±0.1 g/cm3 |
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| Boiling Point | 352.5±25.0 °C at 760 mmHg |
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| Melting Point | 125ºC |
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| Molecular Formula | C10H4O3 |
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| Molecular Weight | 172.137 |
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| Flash Point | 175.6±20.4 °C |
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| Exact Mass | 172.016037 |
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| PSA | 43.37000 |
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| LogP | 1.78 |
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| Vapour Pressure | 0.0±0.8 mmHg at 25°C |
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| Index of Refraction | 1.625 |
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| InChIKey | DXJLXGJIZZNCBO-UHFFFAOYSA-N |
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| SMILES | C#Cc1ccc2c(c1)C(=O)OC2=O |
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Safety Information
| Hazard Codes | Xi |
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| Risk Phrases | 36/37/38 |
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| Safety Phrases | 26-36 |
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| HS Code | 2932999099 |
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Customs
| HS Code | 2932999099 |
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| Summary | 2932999099. other heterocyclic compounds with oxygen hetero-atom(s) only. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0% |
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Synonyms
| 1,3-Isobenzofurandione, 5-ethynyl- |
| 5-Ethynyl-2-benzofuran-1,3-dione |
