// Definition
Parchment paper coated with Quilon (a myristic acid chromium-3 complex in isopropanol), which poses a potential contamination risk in rosin pressing because heat and pressure could oxidize chromium-3 to toxic chromium-6.
// From the Episode
Dr. Mark (SPEAKER_07) arrived and immediately clarified the chemistry. Spelled out Q-U-I-L-O-N. Explained chromium-3 is tolerable (sold as picolinate supplement) but chromium-6 is extremely toxic (Erin Brockovich chemical). The unknown is whether rosin pressing conditions can oxidize Cr3 to Cr6. Recommended silicone-coated parchment as safest option and urged heavy metals testing on all rosin. Corrected Collin Palmer's claim that bleaching creates forever chemicals - bleaching itself doesn't leave harmful traces.