---
type: "LegalText"
title: "15 U.S.C. § 8931"
description: "Definitions"
jurisdiction: "us"
corpus: "united_states_code"
kind: "code_section"
title_number: 15
title_name: "COMMERCE AND TRADE"
chapter_number: "115"
chapter_name: "PERFLUOROALKYL AND POLYFLUOROALKYL SUBSTANCES AND EMERGING CONTAMINANTS"
section: "8931"
citation: "15 U.S.C. § 8931"
status: "current"
release_point: "119-100"
release_date: "2026-06-26"
source: "official"
source_url: "https://uscode.house.gov/download/releasepoints/us/pl/119/100/xml_usc15@119-100.zip"
source_identifier: "/us/usc/t15/s8931"
source_file: "data/legal/raw/us/code/title-15/usc15.xml"
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text_hash: "1fb9303665952a15539b7400c535f323b4f121f46cfb89668cbfb068ba3b244e"
retrieved_at: "2026-07-04"
confidence: "official"
tags: ["legal", "us-code"]
---

# 15 U.S.C. § 8931 - Definitions

## Text

In this subchapter:

(1) Director The term “Director” means the Director of the United States Geological Survey.

(2) Highly fluorinated compound (A) In general The term “highly fluorinated compound” means a perfluoroalkyl substance or a polyfluoroalkyl substance with at least one fully fluorinated carbon atom.

(B) Definitions In this paragraph:

(i) Fully fluorinated carbon atom The term “fully fluorinated carbon atom” means a carbon atom on which all the hydrogen substituents have been replaced by fluorine.

(ii) Perfluoroalkyl substance The term “perfluoroalkyl substance” means a chemical of which all of the carbon atoms are fully fluorinated carbon atoms.

(iii) Polyfluoroalkyl substance The term “polyfluoroalkyl substance” means a chemical containing at least one fully fluorinated carbon atom and at least one carbon atom that is not a fully fluorinated carbon atom.

(Pub. L. 116–92, div. F, title LXXIII, § 7331, Dec. 20, 2019, 133 Stat. 2281.)