Propylene oxide

§ 180.491 Propylene oxide; tolerances for residues. (a) General. (1) Tolerances are established for residues of the fumigant propylene oxide, including its metabolites and degradates, in or on the commodities in the table in this paragraph. Compliance with the tolerance levels specified in this paragraph is to be determined by measuring only propylene oxide, when used as a postharvest fumigant, in or on the commodity. Commodity Parts per million Cacao bean, cocoa powder 200 Cacao bean, dried bean 200 Fig 3.0 Garlic, dried 300 Grape, raisin 1.0 Herbs and spices, group 19, dried 300 Nut, pine 300 Nut, tree, group 14 300 Nutmeat, processed, except peanuts 300 Onion, dried 300 Pistachio 300 Plum, prune, dried 2.0 (2) Tolerances are established for residues of the reaction product, propylene chlorohydrin, including its metabolites and degradates, in or on the commodities in the table in this paragraph. Compliance with the tolerance levels specified in this paragraph is to be determined by measuring only the sum of propylene chlorohydrin (1-chloro-2-propanol), and its isomer 2-chloro-1-propanol, calculated as the stoichiometric equivalent of propylene chlorohydrin (1-chloro-2-propanol), that results from the use of propylene oxide as a postharvest fumigant, in or on the commodity. Commodity Parts per million Basil, dried leaves 6000 Cacao bean, cocoa powder 20.0 Cacao bean, dried bean 20.0 Fig 3.0 Garlic, dried 6000 Grape, raisin 4.0 Herbs and spices, group 19, dried, except basil 1500 Nut, pine 10.0 Nut, tree, group 14 10.0 Nutmeat, processed, except peanuts 10.0 Onion, dried 6000 Pistachio 10.0 Plum, prune, dried 2.0 (b) Section 18 emergency exemptions. [Reserved] (c) Tolerances with regional registrations. [Reserved] (d) Indirect or inadvertent residues. [Reserved] [65 FR 33702, May 24, 2000, as amended at 68 FR 39430, July 1, 2003; 72 FR 49651, Aug. 29, 2007; 73 FR 54963, Sept. 24, 2008; 76 FR 38037, June 29, 2011; 77 FR 28495, May 15, 2012]