40 CFR § 721.11858 - Hydrocarbons, C5-10.
(a) Chemical substance and significant new uses subject to reporting.
(1) The chemical substance identified as hydrocarbons, C5-10 (PMN P-22-147; CASRN 2779559-23-6) is subject to reporting under this section for the significant new uses described in paragraph (a)(2) of this section. The requirements of this section do not apply to quantities of the substance after they have been incorporated into gasoline.
(2) The significant new uses are:
(i) Protection in the workplace. Requirements as specified in § 721.63(a)(1) and (3), (b), and (c). When determining which persons are reasonably likely to be exposed as required for § 721.63(a)(1), engineering control measures (e.g., enclosure or confinement of the operation, general and local ventilation) or administrative control measures (e.g., workplace policies and procedures) shall be considered and implemented to prevent exposure, where feasible. For purposes of § 721.63(b), the concentration is set at 0.1%.
(ii) Hazard communication. Requirements as specified in § 721.72(a).
(iii) Industrial, commercial, and consumer activities. Requirements as specified in § 721.80(f). It is a significant new use to import, process, or use the substance other than as a feedstock for gasoline containing no more than 64% of the substance where the imported gasoline mixture is regulated under applicable EPA regulations for fuels, fuel additives, and regulated blendstocks (40 CFR part 1090) and registration of fuels and fuel additives (40 CFR part 79).
(b) Specific requirements. The provisions of subpart A of this part apply to this section except as modified by this paragraph (b).
(1) Recordkeeping. Recordkeeping requirements as specified in § 721.125(a) through (i), are applicable to manufacturers, importers, and processors of this substance.
(2) Limitation or revocation of certain notification requirements. The provisions of § 721.185 apply to this section.