![Extract oils (coal), tar base Acid Extract [The extract from coal tar oil alkaline extract residue produced by an acidic wash such as aqueous sulfuric acid after distillation to remove naphthalene. Composed primarily of the acid salts of various aromatic nitrogen bases including pyridine, quinoline, and their alkyl derivatives.] The extract from coal tar oil alkaline extract residue produced by an acidic wash such as aqueous sulfuric acid after distillation to remove naphthalene. Composed primarily of the acid salts of various aromatic nitrogen bases including pyridine, quinoline, and their alkyl derivatives. 648-140-00-7 molecular structure](https://www.ebi.ac.uk/opsin/ws/Extract%20oils%20(coal)%2C%20tar%20base%20Acid%20Extract%20%5BThe%20extract%20from%20coal%20tar%20oil%20alkaline%20extract%20residue%20produced%20by%20an%20acidic%20wash%20such%20as%20aqueous%20sulfuric%20acid%20after%20distillation%20to%20remove%20naphthalene.%20%20Composed%20primarily%20of%20the%20acid%20salts%20of%20various%20aromatic%20nitrogen%20bases%20including%20pyridine%2C%20quinoline%2C%20and%20their%20alkyl%20derivatives.%5D%20The%20extract%20from%20coal%20tar%20oil%20alkaline%20extract%20residue%20produced%20by%20an%20acidic%20wash%20such%20as%20aqueous%20sulfuric%20acid%20after%20distillation%20to%20remove%20naphthalene.%20Composed%20primarily%20of%20the%20acid%20salts%20of%20various%20aromatic%20nitrogen%20bases%20including%20pyridine%2C%20quinoline%2C%20and%20their%20alkyl%20derivatives.%20648-140-00-7.png)
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