![]() List of Allowable Pesticides Regulations, NS Reg 181/2010 Prohibits domestic/cosmetic use of 2,4-D except for on golf courses, forestry activities, and agricultural activities the minister has the authority to allow a 2,4-D pesticide to be applied to sports turf or other highly managed turf areas Pesticides Control Act, RSNB 2011, c 203 (replaced: Pesticides Control Act, RSNB 1973, c P-8) Non-Essential Pesticide Use Regulation, Man Reg 285/2014 Sets a limit for 2,4-D concentrations in drinking water of 0.1 mg/L Restricts 2,4-D application to specific methods, target weeds, distance from bodies of water, amount of area treated, and a maximum application rate of 1.4 kg active ingredients (ai) per hectareĬontaminated Sites Regulation, BC Reg 375/96, Schedule 6 ![]() Canadian legal status JurisdictionĮnvironmental Code of Practice for Pesticides under the Environmental Protection and Enhancement Act, RSA 2000, cE-12 **IMAC = interim maximum allowable concentrationĢ,4-D was not included in other Canadian government guidelines, standards, or chemical listings reviewed. air, water) that are protective against adverse health, environmental, or aesthetic (e.g. *Standards are legislated and legally enforceable, while guidelines (including Ontario ambient air quality criteria) describe concentrations of contaminants in the environment (e.g. ![]() Listed as a high priority substance with lowest potential for exposure, but no guidelines developed Urban park and high density residential sites: 300 μg/gĬommercial and industrial sites: 2,500 μg/gDrinking water: 100 μg/L Sets soil standards for the protection of human health:Īgricultural and low density residential sites: 150 μg/g Quebec’s Regulation Respecting the Quality of Drinking WaterīC’s Contaminated Sites Regulation, BC Reg 375/96 Kidney (goats, horses, sheep, cattle): 3 ppmĪll other meats and animal fat: 0.05-0.3 ppmĭrinking Water Guidelines (Canada, MB) and Standards (ON, SK **) Other berries, fruits and vegetables: 0.01 – 0.05 ppm Health Canada’s Maximum Residue Limits for Foods TLV = threshold limit value Canadian environmental guidelines and standards* Jurisdiction maximum)ĪCGIH = American Conference of Governmental Industrial Hygienists Stel = short term exposure limit (15 min. Skin = substances that contribute significantly to the overall exposure by the skin route Other health effects resulting from acute exposures to 2,4-D may include headaches, aggression, diarrhea, kidney failure, skeletal muscle damage, and skin irritation. Lastly, there was strong evidence of 2,4-D’s ability to induce oxidative stress, and moderate evidence of its ability to suppress the immune system. There was limited evidence that 2,4-D can cause cancer in laboratory animals. There was inadequate evidence of carcinogenicity in humans for non-Hodgkin lymphoma in the meta-analysis of 11 studies. In its recent assessment of carcinogenicity, the International Agency for Research on Cancer (IARC) classified 2,4-D as Group 2B, possibly carcinogenic to humans. These effects have since been attributed to the presence of the contaminant 2,3,7,8-tetrachlorodibenzo-p-dioxin (2,3,7,8-TCDD). Many concerns exist about the carcinogenicity of 2,4-D due to the mutagenic and teratogenic effects of Agent Orange, an herbicide used during the Vietnam War that contains 2,4-D. Many other synonyms and product names exist see the Hazardous Substances Data Bank (HSBD) for more information. Commercial names for products containing 2,4-D include Weedex®, Tektamer®, and Killex®. The ester form is the most commonly used form in Canada. ![]() These chemical forms have slightly different properties and consequently behave differently in the environment. Ģ,4-D is an acid and is sold commercially in the form of a salt, amine, or ester. 2,4-D is often formulated with other herbicides, including dicamba, mecoprop, mecoprop-p, MCPA, and clopyralid. As an herbicide, 2,4-D controls broadleaf weeds and is used in a variety of settings. It is used as an herbicide, defoliant, and regulator of plant growth. 2,4-dichlorophenoxyacetic acid (2,4-D) is a colourless or white crystalline powder. ![]()
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