Which herbicide belongs to triazine?
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Which herbicide belongs to triazine?
Atrazine
Atrazine, chemically defined as 2-chloro-4-ethylamino-6-isopropylamino-s-triazine (C8H14ClN5) is a common herbicide belonging to the triazine compound family.
What is triazine used for?
It is used in livestock, vegetable, and ornamental applications by interfering with insect molting and pupation. As herbicides, the triazines may be used alone or in combination with other herbicide active ingredients to increase the weed control spectrum. They are inhibitors of electron transport in photosynthesis.
Where is triazine found?
Among herbicides, the chloro-s-triazine derivatives, and atrazine in particular, are the most heavily used worldwide, and are often therefore, detected in rivers, lakes and groundwater [6].
Is atrazine a triazine?
Atrazine is a widely used herbicide that can be applied before and after planting to control broadleaf and grassy weeds. Atrazine is a member of the triazine chemical class, which includes simazine and propazine.
Is triazine toxic?
Product formulations of the triazine pesticides vary widely. Systemic toxicity is unlikely unless large amounts have been ingested. Some of the triazines are moderately irritating to the eyes, skin, and respiratory tract. Atrazine is considered slightly to moderately toxic to humans.
Is triazine water soluble?
By increasing the temperature of the water, the solubilities of the triazine pesticides increased approximately 3-fold in pure water for each 25 degrees C temperature increment. Cyanazine was 5 times more soluble than atrazine and an order of magnitude more soluble than simazine at 100 degrees C.
How long does Atrazine last in soil?
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.
How long will Atrazine control weeds?
Atrazine kills weeds completely within 14–21 days. It does so by first penetrating the roots, then traveling to the leaves and disrupting photosynthesis. Atrazine remains in the soil for approximately 6 weeks, where it is taken in by plant roots and kills seedlings as they sprout.
Is atrazine still used today?
Atrazine is one of the most commonly used herbicides in the United States: Approximately 80 million pounds of it are used across the country each year. It’s a common contaminant of ground, surface and drinking water. It’s so dangerous to both people and wildlife that it has been banned by the European Union.
How is triazine made?
The more common 1,3,5-isomers are prepared by trimerization of nitrile and cyanide compounds, although more specialized methods are known. The 1,2,3- and 1,2,4-triazines are more specialized methods. The former family of triazines can be synthesized by thermal rearrangement of 2-azidocyclopropenes.
How does triazine scavenger H2S?
Triazine is also preferred in situations where the acid gas stream contains high levels of CO2 in addition to H2S. The triazine reacts preferentially with the H2S and the reaction is not inhibited by the CO2, avoiding unnecessary chemical consumption.
How do you make triazine?
Synthesis. The more common 1,3,5-isomers are prepared by trimerization of nitrile and cyanide compounds, although more specialized methods are known. The 1,2,3- and 1,2,4-triazines are more specialized methods. The former family of triazines can be synthesized by thermal rearrangement of 2-azidocyclopropenes.
How much rain do you need to activate atrazine?
Single Active Ingredient Products
| Single Active Ingredient Products | Precipitation Required for Activation |
|---|---|
| Acetochlor (Harness/Degree) | 0.25 to 0.75 inches within 7 days after application |
| Pyroxasulfone (Zidua) | 0.5 inches before weed emergence |
| Atrazine | Nothing about precipitation amounts mentioned |
How long does atrazine last in the soil?
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.
Can you still buy atrazine?
Atrazine 4L Herbicide is a restricted product and can only be purchased and used by Certified Applicators.
What is triazine used for in oil and gas?
Triazine compounds are commonly used as scavenger chemicals to remove hydrogen sulfide (H2S) from crude oil, in a process sometimes called “stripping.” These triazine-based additives are often present in excess of the levels required to remove the H2S.
