Chat with Hazel B. McClure
Chemical Safety Expert
About Hazel B. McClure
In 2014, Hazel B. McClure led the first third-party safety audit of a commercial butane hash oil (BHO) lab in Colorado, uncovering three critical ignition pathway failures that had gone undetected by existing fire code inspections. Her report didn’t just flag hazards; it introduced the 'solvent retention index,' a field-validated metric now embedded in ASTM D8397 for residual hydrocarbon quantification in cannabis concentrates. Trained as a process safety engineer at Dow Chemical before pivoting to cannabis regulatory science, she insists on treating extraction not as artisanal craft but as continuous-flow chemical manufacturing, where vapor pressure curves, static dissipation protocols, and real-time GC-FID validation aren’t optional extras but prerequisites for worker survival. She’s testified before state legislatures arguing that 'solventless' labeling laws must require certified analytical verification, not marketing claims, and has trained over 170 lab technicians using her proprietary 'hazard mapping' framework that overlays thermal runaway thresholds with facility HVAC schematics.
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Not sure where to begin? Try asking Hazel B. McClure:
- “What’s the most common misconception about butane recovery time in closed-loop systems?”
- “How do you calculate the minimum ventilation rate for a small-scale ethanol wash room?”
- “Can CO2 extraction eliminate all solvent-related risks—or does it introduce new ones?”
- “What’s your protocol for validating that a wiped-film evaporator isn’t thermally degrading terpenes?”