40 CFR Part 63, Table 3
Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
| Thermoplastic | Chemical a | Vessel capacity (cubic meters) | Vapor pressure b (kilopascals) |
|---|---|---|---|
| ASA/AMSAN c | styrene/acrylonitrile mixture | ≥3.78 | ≥0.47 |
| acrylonitrile | ≥75.7 | ≥1.62 | |
| Polystyrene, continuous processes | all chemicals | <75.7 | ≥14.2 |
| ≥75.7 | |||
| ≥1.9 | |||
| Nitrilec | acrylonitrile | ≥13.25 | ≥1.8 |
a Vessel capacity and vapor pressure criteria are specific to the listed chemical or to “all chemicals,” as indicated.
b Maximum true vapor pressure of total organic HAP at storage temperature.
c The applicability criteria in Table 2 of this subpart shall be used for chemicals not specifically listed in this table (i.e., Table 3).
[64 FR 11553, Mar. 9, 1999]