Mich. Comp. Laws § 286.773

Sec. 3. As used in this act: (a) "AASSPs" means anhydrous ammonia safety and security practices established by the commission under section 5. (b) "Anhydrous ammonia" means an inorganic compound that consists of 1 nitrogen atom and 3 hydrogen atoms and has a chemical formula of NH3. Anhydrous ammonia is ammonia gas in a compressed or liquefied form but is not aqueous ammonia, which is a solution of ammonia gas in water. (c) "Commission" means the commission of agriculture. (d) "End user" means the person actually using anhydrous ammonia for a legal purpose. (e) "Seller" means a person selling anhydrous ammonia at wholesale or retail to an end user for a legal purpose.