§556.283. Florfenicol.

21 C.F.R. § 556.283

(a)

Acceptable daily intake (ADI). The ADI for total residue of florfenicol is 10 µg/kg of body weight per day.

(b)

Tolerances. The tolerances for florfenicol amine (marker residue) are:

(1)

Cattle.

(i)

Liver (target tissue)— 3.7 ppm.

(ii)

Muscle— 0.3 ppm.

(2)

Swine.

(i)

Liver (target tissue)— 2.5 ppm.

(ii)

Muscle— 0.2 ppm.

(3)

Catfish. Muscle (target tissue): 1 ppm.

(4)

Freshwater-reared warmwater finfish (other than catfish) and salmonids. Muscle/skin (target tissue): 1 ppm.

(c)

Related conditions of use. See §§ 520.955, 522.955, 522.956, and 558.261 of this chapter.

Notes, amendments, and revision history

Authority: 21 U.S.C. 342, 360b, 371.

Source: 84 FR 32993, July 11, 2019, unless otherwise noted.