|  | |  |  | 7,8-BENZOQUINOLINE Chemical Properties | 
 | Melting point | 48-50 °C(lit.) |  | Boiling point | 338 °C719 mm Hg(lit.) |  | density | 1.2340 |  | refractive index | 1.7270 (estimate) |  | Fp | >230 °F |  | storage temp. | Sealed in dry,Room Temperature |  | solubility | almost transparency in Methanol |  | pka | pK1: 4.15(+1) (20°C) |  | form | Crystalline Powder |  | color | Off-white to brown |  | BRN | 120249 |  | CAS DataBase Reference | 230-27-3(CAS DataBase Reference) |  | NIST Chemistry Reference | Benzo[h]quinoline(230-27-3) |  | EPA Substance Registry System | Benzo[h]quinoline (230-27-3) | 
|  |  | 7,8-BENZOQUINOLINE Usage And Synthesis | 
 | ?Hazardous Properties | 7,8-Benzoquinoline is combustible; burns to produce toxic fumes of nitrogen oxides. |  | Physical properties | 7,8-Benzoquinoline is a dark yellow crystalline solid. |  | Uses | Benzo[h]quinoline was used to study the mutagenic activities of benzo[f]quinoline, benzo[h]quinolone and a number of their derivatives in strain TA 100 of Salmonella typhimurium. It was used in determination of nitrogen-containing polynuclear aromatic hydrocarbons in the gaseous products of the thermal degradation of polymers by HPLC- fluorescence detection. It was used as starting reagent for the synthesis of osmium and ruthenium complexes containing an N-heterocyclic carbene ligand. |  | Safety Profile | Mutation data reported. Whenheated to decomposition it emits toxic fumes of NOx. |  | Purification Methods | Purify it as for 3,4-benzoquinoline above. The picrate has m 196o(from Me2CO). [Beilstein 20 H 463, 20 III/IV 4003, 20/8 V 215.] | 
|  |  | 7,8-BENZOQUINOLINE Preparation Products And Raw materials | 
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