Code of Federal Regulations Title 40. Protection of Environment § 40.721.3550 Dipropylene glycol dimethyl ether

(1) The chemical substance identified as dipropylene glycol dimethyl ether (PMN P–93–507;  CAS No. 111109–77–4) is subject to reporting under this section for the significant new uses described in paragraph (a)(2) of this section. This class 2 substance is exempt from the notification requirements of this rule if it contains less than 5 percent by weight of the specific isomer, propane, 2,2′–oxybis[1–methoxy– (CAS No. 189354–80–1), which is one of the possible products of the manufacturing process for PMN P–93–507.

(2) The significant new uses are:

(1) Recordkeeping requirements. The following recordkeeping requirements specified in § 721.125 (a), (b), (c), (d), and (e) are applicable to manufacturers, importers, and processors of this substance.

(2) Limitations or revocation of certain notification requirements. The provisions of § 721.185 apply to this section.