Section 180.175 - Maleic hydrazide; tolerances for residues(a)General.(1) Tolerances for residues of the herbicide and plant regulator maleic hydrazide (1,2-dihydro-3,6-pyridazinedione) are established in or on the following raw agricultural commodities: | Commodity | Parts per million |
| Onion, bulb | 15.0 |
| Potato | 50.0 |
(2) A food additive known as maleic hydrazide (1,2-dihydro-3,6-pyridazinedione) may be present in potato, chips when used in accordance with the following conditions:(i) The food additive is present as a result of the application of a pesticide formulation containing maleic hydrazide to the growing potato plant in accordance with directions registered by the U.S. Environmental Protection Agency.(ii) The label of the pesticide formulation containing the food additive conforms to labeling registered by the U.S. Environmental Protection Agency.(iii) The food additive is present in an amount not to exceed 160 parts per million by weight of the finished food.(b)Section 18 emergency exemptions. [Reserved](c)Tolerances with regional registrations. [Reserved](d)Indirect or inadvertent residues. [Reserved]62 FR 64293, Dec. 5, 1997, as amended at 64 FR 11792, Mar. 10, 1999; 67 FR 35048, May 17, 2002