1C008 Category 1C

Non-fluorinated polymeric substances as follows (see List of Items Controlled).

Category 1: Special Materials and Related Equipment, Chemicals, “Microorganisms,” and “Toxins”

Reasons for control

• NS: National security
• AT: Anti-terrorism

Country chart

List-based license exceptions

Items

1. a. Imides as follows:
2. a.1. Bismaleimides;
3. a.2. Aromatic polyamide-imides (PAI) having a 'glass transition temperature (Tg)' exceeding 563 K (290 °C);
4. a.3. Aromatic polyimides having a 'glass transition temperature (Tg)' exceeding 505 K (232 °C);
5. a.4. Aromatic polyetherimides having a 'glass transition temperature (Tg)' exceeding 563 K (290 °C);
6. b. [Reserved]
7. c. [Reserved]
8. d. Polyarylene ketones;
9. e. Polyarylene sulfides, where the arylene group is biphenylene, triphenylene or combinations thereof;
10. f. Polybiphenylenethersulphone having a 'glass transition temperature (Tg)' exceeding 563 K (290 °C).

Related controls

See also 1A003.

Notes

Note: 1C008.a controls the substances in liquid or solid “fusible” form, including resin, powder, pellet, film, sheet, tape, or ribbon.

N.B.: For non-“fusible” aromatic polyimides in film, sheet, tape, or ribbon form, see ECCN 1A003.

Technical Notes: 1. For the purposes of 1C008.a.2 thermoplastic materials, 1C008.a.4 materials, and 1C008.f materials, the 'glass transition temperature (Tg)' is determined using the method described in ISO 11357-2 (1999) or national equivalents. 2. For the purposes of 1C008.a.2 thermosetting materials and 1C008.a.3 materials, the 'glass transition temperature (Tg)' is determined using the 3-point bend method described in ASTM D 7028-07 or equivalent national standard. The test is to be performed using a dry test specimen which has attained a minimum of 90% degree of cure as specified by ASTM E 2160-04 or equivalent national standard, and was cured using the combination of standard- and post-cure processes that yield the highest Tg.

Source: eCFR, version 2026-08-01, retrieved 2026-08-20T04:04:59+00:00.