Herbicide Paraquat cas 4685-14-7 Details

Paraquat is an efficient and highly toxic herbicide. Its chemical formula is C12H14Cl2N2, which is formed by the reaction of pyridine, metallic sodium and methyl chloride. It is easily soluble in water, so as long as the crops are washed with water before eating, residues can be avoided. Paraquat has a contact killing effect and loses effect quickly after contact with the soil. Therefore, it is a herbicide that does no harm to the soil and plant roots. Because of this characteristic, paraquat has a good effect on soil and water conservation.

The chemical name of paraquat is N,N'-dimethyl-4,4'-bipyridyl dichloride and methyl disulfate. The chemical formula is (C12H14N2)2+. It exists in the form of divalent cations. This product has dichloride There are two kinds of bisulfate methyl ester salt, which are chemically bipyridine heterocyclic compounds. It was originally a colorless and odorless liquid. In order to prevent accidental ingestion, warning colors, odorants and emetics were often added during production, resulting in a green or blue water-soluble liquid with a pungent smell. Non-flammable and non-explosive.

Characteristics of paraquat

Paraquat is a fast-acting contact-killing bipyridine herbicide. The active ingredients are extremely destructive to the chloroplast membrane, causing photosynthesis and chlorophyll synthesis to be quickly stopped. The leaves will begin to be damaged and discolored 2-3 hours after the drug is applied. Paraquat has a strong effect on the green tissues of monocotyledonous and dicotyledonous plants. It has a destructive effect and has a certain conductive effect to destroy green plant tissues, but it cannot penetrate suberized bark and is easily passivated after contact with soil. It cannot destroy the roots of plants and the seeds hidden in the soil, so weeds will regenerate after application.

Paraquat is a fast-killing herbicide with contact killing effect and certain systemic effect. It can be quickly absorbed by the green tissue of plants, causing them to die. Has no effect on non-green organizations. It quickly combines with the soil and is purified in the soil. It is ineffective on plant roots, perennial underground stems and ratoons.

① Kill the green parts of plants whenever you see them, regardless of crops and weeds

② It kills weeds very quickly. The leaves will turn yellow 2 to 3 hours after application, and the whole plant will die in 3 to 4 days.

③The effectiveness of weeding is related to the weather. Sunny days are generally better than cloudy days.

④No systemic conduction effect

⑤Pharmaceuticals will lose effectiveness quickly if they fall into the soil.

⑥Does not kill the roots and stems of perennial weeds, so it will not cause soil erosion

Applications of paraquat

Paraquat is used as a fast-acting, broad-spectrum, contact-killing, biocidal herbicide. After bipyridyl cations are quickly absorbed by plant leaves, they are reduced to bipyridyl free radicals in green tissues through photosynthesis and respiration, and then undergo autooxidation to form hydrogen peroxide and peroxyl radicals from water and oxygen in leaf tissues. , destroy the chloroplast membrane, interrupt photosynthesis and chlorophyll synthesis, and promote dryness. This agent is used before emergence and loses activity when in contact with soil. It has no effect on crop seedlings unearthed after spraying. Has no effect on brown bark and is safe on woody plant trunks. Light will increase the efficacy of the medicine. Cloudy days delay the effectiveness of the medicine. After wheat and rapeseed are harvested, without plowing, directly use 20% water agent 30-45 mL/100m2 and 3-4.5 kg of water for foliar treatment on the previous crop straw and field weeds. This method can also be used after the rice is harvested. It can also be used to control weeds in orchards, mulberry orchards, rubber plantations, tea gardens, rice fields, and wheat fields (oxgrass, cyperaceae, wheatgrass, pigweed, chickweed, setaria, cricket grass, bamboo grass, etc.), generally Use 20% aqueous agent 30~45 mL/100m2, spray 3.75 kg of water.

Paraquat is a large variety of non-selective herbicide. It is used before crop emergence. It can kill weeds on the ground and dry them up. It is used for weeding in orchards, mulberry orchards, rubber plantations, rice fields, dry land and no-till planting areas.

Scope of application of paraquat

It can control various annual weeds; it has a strong killing effect on perennial weeds, but its underground stems and roots can sprout new branches; it has no effect on lignified brown stems and trunks. It is suitable for controlling weeds in orchards, mulberry orchards, rubber gardens and forest belts. It can also be used to control weeds in non-arable land, field ridges and roadside. For wide-row crops such as corn, sugar cane, soybeans and nurseries, directional spraying can be used to control weeds. Grass.

Paraquat can be used as a defoliant for machine-harvested crops and used as a late-stage auxiliary agent. Since crops using defoliants do not achieve the ideal defoliation effect near the harvest period, paraquat can be used to quickly kill the green tissue of the crop and dehydrate it, without affecting the short-term stacking and storage of harvested fruits after mechanical harvesting. transportation. For example, cotton, pepper and other crops harvest seed cotton and fruits with low moisture regain. When the moisture regain is high, mildew will occur if they are piled for a short period of time. This requires minimizing fresh leaves and stems during harvesting, and using paraquat to quickly kill green tissue, thereby reducing the moisture regain of seed cotton and peppers and ensuring that they can be stacked and transported in a short time after machine harvesting.

Safety to crops: Paraquat is a biocidal herbicide. If it is not sprayed on the green stems and leaves of crops, the liquid will only stain the brown lignified bark and branches and will not harm crops or trees. Paraquat will lose activity when it comes in contact with soil. It should be removed 1-2 days before sowing and is safe for crops.

Paraquat packaging

We also supply some accessories to add more functions for end-users' convenience, which also help our distributors and business partners sell our products in their area. Any special package requirements, please don't be hesitate to tell us.

Large Package:

Solid: 25Kg UN approved fiber drums with LDPE liner;

Liquid: 200L UN approved HDPE or iron drums.

Solid: 10g;50g;100g;500g;1kg;5kg;25kg

Paraquat Suppliers

Agripestcide is a professional pesticide chemical manufacturer that provides high quality and effective paraquat with high quality and good service. If you are looking for bulk paraquat, please feel free to contact us for the latest price.