Section 11-37-52 - Solvents and processing practices(a) Solvents used in processing hemp 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 hemp processing: (2) Carbon tetrachloride;(4) 1, 1-Dichloroethene; and(5) 1, 1, 1-Trichloroethane.(c) Hemp 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 safety.[Eff 8/9/21; comp 2/24/2022] (Auth: HRS § 328G-4) (Imp: HRS §§ 328G-3, 328G-4)