Section 180.590 - 2, 6-Diisopropylnaphthalene (2, 6-DIPN); tolerances for residues(a)General. Tolerances are established for residues of the growth inhibitor 2,6-DIPN, 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 2,6-Diisopropylnaphthalene. | Commodity | Parts per million |
| Cattle, fat | 0.2 |
| Cattle, meat | 0.02 |
| Cattle, meat byproducts, except fat | 0.02 |
| Goat, fat | 0.2 |
| Goat, meat | 0.02 |
| Goat, meat byproducts, except fat | 0.02 |
| Horse, fat | 0.2 |
| Horse, meat | 0.02 |
| Horse, meat byproducts, except fat | 0.02 |
| Milk, fat | 0.02 |
| Potato, granules/flakes | 5.5 |
| Potato, wet peel | 6.0 |
| Potato, whole | 2.0 |
| Sheep, fat | 0.2 |
| Sheep, meat | 0.02 |
| Sheep, meat byproducts, except fat | 0.02 |
(b)Section 18 emergency exemptions. [Reserved](c)Tolerances with regional registrations. [Reserved](d)Indirect or inadvertent residues. [Reserved] 71 FR 52011 , Sept. 1, 2006, as amended at 74 FR 66579 , Dec. 16, 2009; 77 FR 32406 , June 1, 2012