What does atrazine contain?
Atrazine is a chlorotriazine and consists of a ring struc- ture, called the triazine ring, along with five nitrogen atoms and a chlorine atom. Pure atrazine is an odorless, white powder, not very volatile, reactive, or flammable.
Does atrazine break down?
If atrazine enters the air, it can be broken down by reactions with other reactive chemicals in the air. However, sometimes atrazine is on particles such as dust. When this happens, breakdown is not expected to occur.
What is the maximum rate of atrazine active ingredient that can be applied per acre per calendar year?
2.5 pounds
*Atrazine applications for corn are restricted to a maximum of 2.5 pounds active ingredient per acre (lb. ai/A) per calendar year.
How long does atrazine take to break down in the environment?
If in the air, atrazine degrades quickly, with an estimated half-life of 14 hours. Atrazine has a low to moderate solubility in water. Atrazine does not bind well to soil and can easily move in it. It has an average half-life in soil of around 60-75 days.
Does atrazine dissolve in water?
WaterAtrazine / Soluble in
Is atrazine an acid or a base?
In a neutral, slightly alkaline or slightly acid environment, atrazine is stable (half-life at pH 7-9: 10,000 days)….BASIC CHEMICAL AND PHYSICAL DATA.
| Empirical formula: | C8H14ClN5 |
|---|---|
| Melting point: | 173-175°C |
| Vapour pressure: | 4 x 10-5 Pa |
What is the half life of atrazine?
rapidly distributed and metabolized via dealkylation with a biological elimination half life of 10.8 to 11.2 hours. enter the organs or fat tissue, but they do not bioaccumulate or build up or remain in the human body. atrazine is mediated by cytochrome P- 450 enzymes.
Does Atrazine 4L need a surfactant?
Answer: Hi-Yield Atrazine Weed Killer is already premixed with a surfactant and another surfactant does not need to be added to make the product more effective. 238 of 252 people found this answer helpful.
How much water should I mix with atrazine?
Atrazine 4L’s label recommends applying the product at a rate of 1.5 fl. ozs. per 1,000 square feet in a gallon of water or 4 pints per acre in 15 gallons of water. For example, if you have a 3,000 square foot area to be treated, you would need 4.5 ozs of Atrazine mixed with 3 gallons of water.
How long is atrazine effective?
How Long Does Atrazine Last? One application of Atrazine typically remains active in the soil for 6 weeks, killing weed seeds as well as the mature weeds in your lawn. Over the course of these 6 weeks, Atrazine is absorbed by plant roots and is gradually washed out of the soil by watering and precipitation.
How do you dissolve atrazine?
Atrazine is sparingly soluble in aqueous buffers. For maximum solubility in aqueous buffers, atrazine should first be dissolved in DMSO and then diluted with the aqueous buffer of choice. Atrazine has a solubility of approximately 0.1 mg/ml in a 1:10 solution of DMSO:PBS (pH 7.2) using this method.
Does atrazine have residual?
Residues of atrazine may remain in the soil and affect some susceptible crops the next year. Crops most often affected include soybeans, field beans, sugarbeets, alfalfa, oats, wheat and many broadleaf horticultural crops.
Is atrazine persistent?
Atrazine and its metabolites are well dispersed in the environment and persistent.
How long does atrazine last?
Should I use a surfactant with Atrazine?
What is the mix ratio for Atrazine?
One gallon of Atrazine and water mix is enough to kill weeds in a 500 square-foot area without harming your grass. Mix 4.33 ounces of Atrazine per gallon of water. When mixing in a container, pour Atrazine first, followed by water for best results. Apply the mixture to 500 square feet of lawn.
Does Atrazine need rain to activate?
We are asked quite often how much rainfall it takes to activate a soil-applied, residual herbicide….Single Active Ingredient Products.
| Single Active Ingredient Products | Precipitation Required for Activation |
|---|---|
| Pyroxasulfone (Zidua) | 0.5 inches before weed emergence |
| Atrazine | Nothing about precipitation amounts mentioned |
Does Atrazine need a surfactant?
Does atrazine need rain to activate?
Does atrazine need rain to work?
* Delay application at planting. Wait for a forecast calling for rain, then apply a day or two before rain. Atrazine will control most small weeds that have emerged, while rain will activate the herbicide to control not-yet emerged weeds.
What is the vapor pressure of atrazine in air?
If released to air, a vapor pressure of 2.89X10-7 mm Hg at 25 °C indicates atrazine will exist in both the vapor and particulate phases in the atmosphere. Vapor-phase atrazine will be degraded in the atmosphere by reaction with photochemically-produced hydroxyl radicals; the half-life for this reaction in air is estimated to be 14 hours.
How is atrazine hydrolyzed?
Atrazine (1912-24-9) (2008-2010) Stable in slightly acidic or basic media; hydrolyzed to inactive hydroxy derivatives by alkali or mineral acids O’Neil, M.J. (ed.). The Merck Index – An Encyclopedia of Chemicals, Drugs, and Biologicals.
What are the hazards of atrazine?
The major hazards encountered in the use and handling of atrazine stem from its toxicologic properties. Toxic by all routes (ie, inhalation, ingestion, dermal contact), exposure to this colorless to white, odorless, crystalline substance may occur from its manufacture, formulation, and use as an herbicide.
What is the concentration of atrazine in groundwater?
Atrazine was detected in one of 23 groundwater wells tested 2002 to 2003 from Aquifer Punta Espinilla, Uruguay, at a concentration of 0.92 ug/L (detection limit 0.3 ug/L) (6). Atrazine was detected at a maximum of 2700 ng/L in groundwater samples from Italy as reported in 47 studies published 1997 to 2013 (7).