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Substance Name: Tar bases, coal, crude
RN: 65996-84-1


  • TSCA Definition 2018: The reaction product obtained by neutralizing coal tar base extract oil with an alkaline solution, such as aqueous sodium hydroxide, to obtain the free bases. Composed primarily of such organic bases as acridine, phenanthridine, pyridine, quinoline and their alkyl derivatives.

Molecular Formula

  • Unspecified

Classification Code

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Links to Resources

NLM Resources (File Locators)

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Other Resources (Internet Locators)

Names and Synonyms


  • Crude tar bases (coal)
  • EC 266-018-8
  • EINECS 266-018-8

Systematic Name

  • Tar bases, coal, crude

Registry Numbers

CAS Registry Number

  • 65996-84-1

Other Registry Number

  • 61790-07-6

System Generated Number

  • 0065996841