StacksVerified U.S. regulatory reference

40 CFR §98.510

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
This source category includes any facility that produces caprolactam, glyoxal, or glyoxylic acid. This source category excludes the production of glyoxal through the LaPorte process (i.e., the gas-phase catalytic oxidation of ethylene glycol with air in the presence of a silver or copper catalyst).