Residual Solvents Analysis
Processors of cannabis concentrates utilize a variety of solvents to manufacture high-quality, potent, waxes and oils. Carbon-based organic solvents are used to dissolve or disperse another substance. Concentrates are extracted from cannabis plant material using organic solvents. While many of these commonly used solvents (ethanol, isopropyl, butane, propane) are generally regarded as safe, some residual solvents may remain in the final product based on the methodology used to extract the cannabis products from the plant.
For example, if a cannabis concentrate is not purged properly to eliminate the solvents used in the extraction process; residual solvent can remain in the concentrate when used by consumer. These residual solvents remaining in the concentrates can be harmful and toxic when inhaled or ingested over time. Residual solvents are typically not acutely toxic but may have a long-term effect on exposed individuals. Therefore, it is vital that cannabis products be tested for such contaminants to ensure consumer safety.
Action Limits for Residual Solvents - Parts Per Million (PPM)
|Butanes (all isomers)||106-97-8||800||5000|
|Hexanes (all isomers)||110-54-3||50||290|
|Pentanes (all isomers)||109-66-0||750||5000|
|Total xylenes (ortho-, meta-, para-)||1330-20-7||150||2170|
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