---
kind: "section"
citation: "40 C.F.R. § 180.590"
title: "40"
number: "180.590"
heading: "2, 6-Diisopropylnaphthalene (2, 6-DIPN); tolerances for residues."
url: "https://uscodex.org/cfr/40/180.590"
---

# §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.
- (b) **Section 18 emergency exemptions.** [Reserved]
- (c) **Tolerances with regional registrations.** [Reserved]
- (d) **Indirect or inadvertent residues.** [Reserved]

## Notes

### Amendments

[71 FR 52011, Sept. 1, 2006, as amended at 74 FR 66579, Dec. 16, 2009; 77 FR 32406, June 1, 2012]

### Authority

Authority: 21 U.S.C. 321(q), 346a and 371.

### Source

Source: 36 FR 22540, Nov. 25, 1971, unless otherwise noted.

### Amendments

[71 FR 52011, Sept. 1, 2006, as amended at 74 FR 66579, Dec. 16, 2009; 77 FR 32406, June 1, 2012]