Section 180.222 - Prometryn; tolerances for residues(a)General. Tolerances are established for residues of the herbicide prometryn, including its metabolites and degradates, in or on the commodities in the following table. Compliance with the tolerance levels specified in the following table is to be determined by measuring only prometryn, 2,4-bis(isopropylamino)-6-methylthio-s-triazine, in or on the following raw agricultural commodities: | Commodity | Parts per million |
| Bean, snap, succulent | 0.05 |
| Carrot, roots | 0.45 |
| Celeriac, roots | 0.05 |
| Celeriac, tops | 0.20 |
| Celtuce | 0.50 |
| Cilantro, leaves | 3.5 |
| Coriander, dried leaves | 9.0 |
| Cotton, gin byproducts | 1.0 |
| Cottonseed subgroup 20C | 0.25 |
| Dill, oil | 1.3 |
| Dillweed, dried leaves | 1.1 |
| Dillweed, fresh leaves | 0.30 |
| Fennel, Florence, fresh leaves and stalk | 0.50 |
| Leaf petiole vegetable subgroup 22B | 0.50 |
| Okra | 0.05 |
| Parsley, dried leaves | 1.5 |
| Parsley, leaves | 0.60 |
| Pea, pigeon, seed | 0.25 |
| Sesame, seed | 0.05 |
| Swiss chard | 0.50 |
(b)Section 18 emergency exemptions. [Reserved](c)Tolerances with regional exemptions. [Reserved](d)Indirect or inadvertent residues. Tolerances are established for indirect or inadvertent residues of the herbicide prometryn, including its metabolites and degradates, in or on the commodities in the following table. Compliance with the tolerance levels specified in the following table is to be determined by measuring only prometryn, 2,4-bis(isopropylamino)-6-methylthio-s-triazine, in or on the following raw agricultural commodities. | Commodity | Parts per million |
| Barley, forage | 0.3 |
| Barley, hay | 1.0 |
| Barley, straw | 0.3 |
| Oat, forage | 0.3 |
| Oat, hay | 1.0 |
| Oat, straw | 0.3 |
| Rye, forage | 0.3 |
| Rye, hay | 1.0 |
| Rye, straw | 0.3 |
| Triticale, forage | 0.3 |
| Triticale, hay | 1.0 |
| Triticale, straw | 0.3 |
| Wheat, forage | 0.3 |
| Wheat, hay | 1.0 |
| Wheat, straw | 0.3 |
43 FR 29121, July 6, 1978, as amended at 45 FR 51782, Aug. 5, 1980; 54 FR 6918, Feb. 15, 1989; 60 FR 20434, Apr. 26, 1995; 63 FR 17692, Apr. 10, 1998; 63 FR 57075, Oct. 26, 1998; 64 FR 39082, July 21, 1999; 74 FR 47456 , Sept. 16, 2009; 74 FR 67108 , Dec. 18, 2009; 76 FR 34885 , June 15, 2011; 78 FR 55640 , Sept. 11, 2013; 82 FR 57144 , Dec. 4, 2017