Proposed Maximum Residue Limit PMRL2014-27, S metolachlor

Pest Management Regulatory Agency
4 June 2014
ISSN: 1925-0843 (PDF version)
Catalogue number: H113-24/2014-27E-PDF (PDF version)

Under the authority of the  Pest Control Products Act, Health Canada’s Pest Management Regulatory Agency (PMRA) has concluded that the addition of new uses on highbush blueberries to the product labels of Dual Magnum Herbicide and Dual II Magnum Herbicide, containing technical grade S-metolachlor, are acceptable. The specific uses approved in Canada are detailed on the label of Dual Magnum Herbicide and Dual II Magnum Herbicide labels, Pest Control Products Act Registration Numbers 25728 and 25729, respectively.

The evaluation of these S-metolachlor applications indicated that the end-use products have merit and value and the human health and environmental risks associated with the new use are acceptable. Details regarding the registration can be found in the corresponding Evaluation Reports that are available in the Pesticides and Pest Management section of Health Canada’s website, under Public Registry, Pesticide Product Information Database.Footnote 1

Before registering a pesticide for food use in Canada, the PMRA must determine the quantity of residues that are likely to remain in or on the food when the pesticide is used according to label directions and that such residues will not be a concern to human health. This quantity is then legally established as a maximum residue limit (MRL). An MRL applies to the identified raw agricultural food commodity as well as to any processed food product that contains it, except where separate MRLs are specified for the raw agricultural commodity and a processed product made from it.

Consultation on the proposed MRL for S-metolachlor is being conducted via this document (see Next Steps, the last section of this document).

To comply with Canada’s international trade obligations, consultation on the proposed MRL is also being conducted internationally by notifying the  World Trade Organization, as coordinated by the  Standards Council of Canada.

The proposed MRL for S-metolachlor in Canada in or on food, to be added to the MRLs already legally established, is as follows.

Table 1 Proposed Maximum Residue Limit for S-metolachlor
Common Name Residue Definition MRL (ppm)Table 1 footnote 1 Food Commodity

Table 1 footnotes

Table 1 footnote 1

ppm = parts per million

Return to table 1 footnote 1 referrer

S-metolachlor 2-chloro-N-(2-ethyl-6-methylphenyl)-N-[(1S)-2-methoxy-1-methylethyl)acetamide and 2-chloro-N-(2-ethyl-6-methylphenyl)-N-[(1R)-2-methoxy-1-methylethyl)acetamide, including the metabolites 2-[(2-ethyl-6-methylphenyl)amino]-1-propanol and 4-(2-ethyl-6-methylphenyl)-2-hydroxy-5-methyl-3-morpholinone 0.15 Bushberries (Crop Subgroup 13-07B)

MRLs are proposed for each commodity included in the bushberry crop subgroup in accordance with the Residue Chemistry Crop Groups webpage in the Pesticides and Pest Management section of Health Canada’s website.

MRLs established in Canada may be found using the Maximum Residue Limit Database on the Maximum Residue Limits for Pesticides webpage. The database allows users to search for established MRLs, regulated under the Pest Control Products Act, both for pesticides or for food commodities.

International Situation and Trade Implications

The proposed MRL for S-metolachlor in Canada is the same as the corresponding tolerance for the bushberry subgroup established in the United States (tolerances are listed in the Electronic Code of Federal Regulations, 40 CFR Part 180, by pesticide). Currently, Codex Alimentarius MRLsFootnote 2 have not been established for S-metolachlor on any commodity. A listing of established Codex MRLs is available on the Codex Alimentarius Pesticide Residues in Food website.

Next Steps

The PMRA invites the public to submit written comments on the proposed MRL for S‑metolachlor up to 75 days from the date of publication of this document. Please forward your comments to Publications.

The PMRA will consider all comments received before making a final decision on the proposed MRL. Comments received will be addressed in a separate document linked to this PMRL. The established MRL will be legally in effect as of the date that it is entered into the Maximum Residue Limit Database.

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