This sentence can be decoded using linguistics and chemistry.
It means: You shall not synthesize Nylon-6 (also known as Capron®) from caprolactam.
Capron can be synthesized (the synthesis involves high temperatures, hence the reference to boiling in the Bible) without using the toxic caprolactam as the source ("mother") material - from the much safer aminocaproic acid. The synthesis of Nylon-66 (the original Dupont Nylon®) does not involve caprolactam.
This makes Ex. 23:19 the oldest known environmental protection requirement.