40 CFR § 716.50 - Reporting physical and chemical properties.
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.
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