499-05-8
499-05-8 structure
- Name: 4-Oxo-4H-pyran-2-carboxylic acid
- Chemical Name: 4-oxopyran-2-carboxylic acid
- CAS Number: 499-05-8
- Molecular Formula: C6H4O4
- Molecular Weight: 140.094
- Create Date: 2018-06-01 08:00:00
- Modify Date: 2024-01-02 10:19:49
| Name | 4-oxopyran-2-carboxylic acid |
|---|---|
| Synonyms |
4H-Pyran-2-carboxylic acid, 4-oxo-
4-oxo-4H-pyrane-2-carboxylic acid COMANIC ACID 4-Oxo-4H-pyran-2-carbonsaeure γ-Pyrone-2-carboxylic Acid 4-Oxo-4H-pyran-2-carboxylic acid |
| Density | 1.5±0.1 g/cm3 |
|---|---|
| Boiling Point | 354.5±37.0 °C at 760 mmHg |
| Molecular Formula | C6H4O4 |
| Molecular Weight | 140.094 |
| Flash Point | 160.0±20.0 °C |
| Exact Mass | 140.010956 |
| PSA | 67.51000 |
| LogP | -0.56 |
| Vapour Pressure | 0.0±1.7 mmHg at 25°C |
| Index of Refraction | 1.577 |
| Risk Phrases | 36/37/38 |
|---|---|
| Safety Phrases | 26-36/37/39 |
| HS Code | 2932999099 |
| Precursor 7 | |
|---|---|
| DownStream 4 | |
| HS Code | 2932999099 |
|---|---|
| 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% |