40 C.F.R. § 710.27 : Protection of Environment — ENVIRONMENTAL PROTECTION AGENCY — TOXIC SUBSTANCES CONTROL ACT — COMPILATION OF THE TSCA CHEMICAL SUBSTANCE INVENTORY — COMMERCIAL ACTIVITY NOTIFICATION — Activities for which notification is not required

(a) In general. The following activities do not trigger notification requirements under this subpart:
(1) The manufacturing or processing of a chemical substance in small quantities solely for research and development.
(2) The import or processing of a chemical substance as part of an article.
(3) The manufacturing or processing of a chemical substance as described in §720.30(g) or (h).
(4) The manufacturing or processing of a chemical substance solely for export from the United States as described in §720.30(e) or §721.3, except where the Administrator has made a finding described in TSCA section 12(a)(2).
(5) The manufacturing or processing of a chemical substance solely for test marketing purposes.
(b) Manufacturing or processing naturally occurring chemical substances. The following activities do not trigger notification requirements under this subpart:
(1) The manufacture of a naturally occurring chemical substance, as described in §710.4(b). Some chemical substances can be manufactured both as described in §710.4(b) and by means other than those described in §710.4(b). If a person manufactures a chemical substance by means other than those described in §710.4(b), this exemption is inapplicable, regardless of whether the chemical substance also could have been produced as described in §710.4(b). This exemption does not cover the manufacture of a chemical substance from a naturally occurring chemical substance.
(2) The processing of a naturally occurring chemical substance only by manual, mechanical, or gravitational means; by dissolution in water; by flotation; or by heating solely to remove water.

40 C.F.R. §710.27

82 FR 37540, 8/11/2017