Introduction：Basic information about CAS 250-84-0|Thieno(2,3-b)thiophene, including its chemical name, molecular formula, synonyms, physicochemical properties, and safety information, etc.
| Common Name | Thieno(2,3-b)thiophene |
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| CAS Number | 250-84-0 | Molecular Weight | 140.226 |
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| Density | 1.4±0.1 g/cm3 | Boiling Point | 225.9±13.0 °C at 760 mmHg |
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| Molecular Formula | C6H4S2 | Melting Point | 7 °C |
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| MSDS | ChineseUSA | Flash Point | 64.3±6.0 °C |
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| Symbol |
GHS07 | Signal Word | Warning |
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Names
| Name | thieno[2,3-b]thiophene |
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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 | 225.9±13.0 °C at 760 mmHg |
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| Melting Point | 7 °C |
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| Molecular Formula | C6H4S2 |
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| Molecular Weight | 140.226 |
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| Flash Point | 64.3±6.0 °C |
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| Exact Mass | 139.975433 |
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| PSA | 56.48000 |
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| LogP | 5.31 |
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| Vapour Pressure | 0.1±0.4 mmHg at 25°C |
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| Index of Refraction | 1.729 |
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| InChIKey | YHBTXTFFTYXOFV-UHFFFAOYSA-N |
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| SMILES | c1cc2ccsc2s1 |
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Safety Information
| Symbol |
GHS07 |
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| Signal Word | Warning |
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| Hazard Statements | H302-H315-H319-H335 |
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| Precautionary Statements | P261-P305 + P351 + P338 |
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| Personal Protective Equipment | Eyeshields;Faceshields;full-face respirator (US);Gloves;multi-purpose combination respirator cartridge (US);type ABEK (EN14387) respirator filter |
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| Safety Phrases | S22-S24/25 |
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| RIDADR | UN 3334 |
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| HS Code | 2934999090 |
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Customs
| HS Code | 2934999090 |
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| Summary | 2934999090. other heterocyclic compounds. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0% |
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Synonyms
| thieno<2,3-b>thiophene |
| 1,6-Thiophthene |
| Thieno(2,3-b)thiophene |
| Thieno[2,3-b]thiophene |
| 1,6-Dithiapentalene |
| thieno[2,3-b]thiophen |
| Polythieno[2,3-b]thiophene |
| Thiophthene |
