- Supplement No. 2 to Part 710—Definitions of Production
| Schedule 1 chemicals | Schedule 2 and Schedule 3 chemicals | Unscheduled discrete organic chemicals (UDOCs) | Produced by a biochemical or biologically mediated reaction | Produced by synthesis* | Formation through chemical synthesis.
Processing to extract and isolate Schedule 1 chemicals. | All production steps in any units within the same plant which includes associated processes—purification, separation, extraction distillation or refining.** |
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* Intermediates used in a single or multi-step process to produce another declared UDOC are not declarable.
** Intermediates are subject to declaration, except “transient intermediates,” which are those chemicals in a transition state in terms of thermodynamics and kinetics, that exist only for a very short period of time, and cannot be isolated, even by modifying or dismantling the plant, or by altering process operating conditions, or by stopping the process altogether are not subject to declaration.