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Dibenzothiophene (DBT, diphenylene sulfide) is the organosulfur compound consisting of two benzene rings fused to a central thiophene ring. It has the chemical formula C 12 H 8 S. It is a colourless solid that is chemically somewhat similar to anthracene .
The high reactivity of thiophene toward sulfonation is the basis for the separation of thiophene from benzene, which are difficult to separate by distillation due to their similar boiling points (4 °C difference at ambient pressure).
Dibenzofuran is a relatively non-toxic compound as evidenced by rats being unaffected after a 200-day diet consisting of 0.025 – 0.4% of DBF. [1] The polychlorinated dibenzofurans are however among the potentially toxic dioxins and dioxin-like compounds.
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The tetrahydroisoquinoline skeleton is present in a number of drugs, [3] such as tubocurarine, one of the quaternary ammonium muscle relaxants.Drugs based on 4-substituted tetrahydroisoquinolines include nomifensine [13] and diclofensine.
Triple point: 184.9 K (−88.2 °C), ? Pa Critical point: 508.7 K (235.6 °C), 5370 kPa Std enthalpy change of fusion, Δ fus H o: 5.28 kJ/mol Std entropy change of fusion, Δ fus S o: 28.6 J/(mol·K) Std enthalpy change of vaporization, Δ vap H o: 44.0 kJ/mol Std entropy change of vaporization, Δ vap S o: 124 J/(mol·K) Solid properties Std ...
Melting point: −59.00 °C; −74.20 °F; 214.15 K ... containing both a tertiary amine and primary alcohol ... It is used in skin care products for improving skin ...
Melting point: 3.6 °C (38.5 °F; 276.8 K) Boiling point: 298 °C (568 °F; 571 K) Hazards ... It is classified as an ether derived from benzyl alcohol.