Growing Concerns about Cannabis Vape Cartridge Additives
E-cigarettes, both with cannabis and tobacco oils in them, rely on additives to standardize the potency of oils and to change their viscosity so that their cartridges do not clog or leak. There are several different additives that companies use including propylene glycol (PG), polyethylene glycol (PEG), vegetable glycerin (VG), medium-chain triglycerides (MCT), and even terpenes. Complicating matters further, PEG comes in a nearly unlimited range of molecular weights, each with different known uses, risks, and consistencies; simply put, the bigger the number after the PEG the higher the molecular weight, and more solid it will be. Most cannabis e-cigarettes…