Subheading 270750 captures aromatic hydrocarbon mixtures where 65% or more by volume distills at or below 250°C (measured by ASTM D86 or equivalent). Mixtures that do not meet this threshold may fall outside heading 2707 entirely, potentially classifying under Chapter 29 as individual aromatic chemicals or under another heading depending on composition.

Creosote is regulated as a pesticide by the EPA under FIFRA when used as a wood preservative, and imports intended for that use may require registration or compliance documentation. Importers should confirm the intended end-use and consult EPA requirements, as the regulatory treatment differs between industrial/process use and pesticidal application.