Mich. Comp. Laws § 29.21a

Sec. 21a. (1) Except as provided in subsection (2), a person shall not sell, give, offer for sale, install for use, or allow to remain installed for use a fire extinguisher or fire extinguishing device containing an active agent having a level of vapor toxicity equal to or greater than any of the following listed materials, or a fire extinguisher or fire extinguishing device containing an active agent or propellant whose thermal decomposition product or products have a level of vapor toxicity equal to or greater than any of the following listed materials: (a) Carbon tetrachloride, CCl4 (b) Chlorobromomethane, CH2 BrC l (c) Azeotropic chlormethane, CM-7 (d) Dibromodifluoromethane, CBr2 F2 (e) 1,2-dibromo-2-chloro-1,1,2-trifluoroethane, CBr-F2 CBrClF (f) 1,2-dibromo-2,2-difluoroethane, CH2BrCBrF 2 (g) Methyl bromide, CH3 Br (h) Ethylene dibromide, CH2 BrCH2 Br (i) Hydrogen bromide, HBr (j) Methylene bromide, CH2Br2 (k) Bromodifluoromethane, CHBrF2 (2) A person may sell, give, offer for sale, install for use or allow to remain installed for use, a fire extinguisher or fire extinguisher device which contains, in addition to an inert propellant, bromotrifluoromethane or bromochlorodifluoromethane, or a combination of bromotrifluoromethane and bromochlorodifluoromethane.