40748-90-1
40748-90-1 structure
- Name: 4-Hydroxy-2-thiophenecarboxylic acid
- Chemical Name: 4-hydroxythiophene-2-carboxylic acid
- CAS Number: 40748-90-1
- Molecular Formula: C5H4O3S
- Molecular Weight: 144.148
- Create Date: 2017-01-31 17:42:48
- Modify Date: 2025-09-22 08:42:06
| Name | 4-hydroxythiophene-2-carboxylic acid |
|---|---|
| Synonyms |
2-Thiophenecarboxylic acid,4-hydroxy
4-Hydroxy-thiophen-2-carbonsaeure 3-Hydroxy-5-hydroxycarbonyl-thiophen 2-Thiophenecarboxylic acid, 4-hydroxy- 4-Hydroxy-2-thiophenecarboxylic acid 4-hydroxy-2-thenoic acid 4-hydroxy-thiophene-2-carboxylic acid |
| Density | 1.6±0.1 g/cm3 |
|---|---|
| Boiling Point | 381.0±27.0 °C at 760 mmHg |
| Molecular Formula | C5H4O3S |
| Molecular Weight | 144.148 |
| Flash Point | 184.2±23.7 °C |
| Exact Mass | 143.988113 |
| PSA | 85.77000 |
| LogP | 1.18 |
| Vapour Pressure | 0.0±0.9 mmHg at 25°C |
| Index of Refraction | 1.667 |
| HS Code | 2934999090 |
|---|
|
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40748-90-1 |
| Literature: Fiesselmann; Pfeiffer Chemische Berichte, 1954 , vol. 87, p. 848,855 |
|
~%
40748-90-1 |
| Literature: Fiesselmann; Boehm Chemische Berichte, 1956 , vol. 89, p. 1902,1904 |
| Precursor 2 | |
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| DownStream 1 | |
| HS Code | 2934999090 |
|---|---|
| Summary | 2934999090. other heterocyclic compounds. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0% |