eCFR Reference Browser

---

title: "40 CFR §716.50"

source: "https://www.ecfr.gov/current/title-40/section-716.50"

title_number: "40"

volume_number: "33"

chapter_number: "Unknown"

subchapter_code: "R"

subchapter_subject: "TOXIC SUBSTANCES CONTROL ACT"

part_code: "716"

part_subject: "HEALTH AND SAFETY DATA REPORTING"

subpart_code: "A"

subpart_subject: "General Provisions"

section_number: "716.50"

section_subject: "Reporting physical and chemical properties."

cfr_reference: "40 CFR 716.50"

title_name: "Title 40"

title_subject: "Protection of Environment"

parts_covered: "Parts 700 to 722"

revised_date: "Revised as of July 1, 2019"

publication_date: "As of July 1, 2019"

contains_description: "Containing a codification of documents of general applicability and future effect"

publication_info: "Published by the Office of the Federal Register National Archives and Records Administration as a Special Edition of the Federal Register"

---

Studies of physical and chemical properties must be reported under this subpart if performed for the purpose of determining the environmental or biological fate of a substance, and only if they investigated one or more of the following properties:

(a)Water solubility.

(b)Adsorption/desorption on particulate surfaces, e.g., soil.

(c)Vapor pressure.

(d)Octanol/water partition coefficient.

(e)Density/relative density (specific gravity).

(f)Particle size distribution for insoluble solids.

(g)Dissociation constant.

(h)Degradation by photochemical mechanisms—aquatic and atmospheric.

(i)Degradation by chemical mechanisms—hydrolytic, reductive, and oxidative.

(j)Degradation by biological mechanisms—aerobic and anaerobic.

§716.50 - Reporting physical and chemical properties.