Section 11-850-44 - Solvents and processing practices(a) Solvents used in producing manufactured cannabis products shall be of the highest purity, with the minimum standard being solvent intended to be safe for use in manufacturing a product for human consumption.(b) The following solvents shall not be used in the production of manufactured cannabis products: (2) Carbon tetrachloride;(4) 1, 1-Dichloroethene; and(5) 1, 1, 1-Trichloroethane.(c) Cannabis shall not be processed using butane in an open system where fumes are not contained nor by use of any other method of processing the department determines poses a risk to health and safety.[Eff DEC 14 2015] (Auth: HRS §§ 321-9, 329D-27) (Imp: HRS §§ 329D-8, 329D-15, 329D-18, 329D-25)[Eff and comp 2/24/2022] (Auth: HRS §§ 321-9, 329D-9, 329D-27) (Imp: HRS §§ 329D-9)