Herbicide Cyhalofop-butyl 97%TC Cas 122008-85-9

Cyhalofop-ethyl is a phenoxypropionic acid systemic herbicide, mainly used in rice seedling fields, direct seeding fields, and transplanting fields to control barnyardgrass, stephenia, goosegrass and most vicious gramineous weeds. It features of high efficiency, low toxicity and low residue.



Physical State: crystallize solid

Purity(%): 97%

Application: Agricultura

Color: White

Formulation:10%,15%EC;10%High Permeability Microemulsion and used to manufacturer more formulated product

  • Category: Herbicide
  • Tags:
      Herbicide,Cyhalofop-butyl,Cas 122008-85-9
cyhalofop-butyl is an oxyphenoxypropionic acid systemic herbicide, the chemical name is (R)-2-[4-(4-cyano-2-fluorophenoxy)phenoxy]propionic acid Butyl ester, mainly used in rice seedling fields, direct seeding fields, transplanting fields, to control barnyard grass, stephenia, goosegrass and most malignant grass weeds, and can effectively control quinclorac, sulfonylureas and Amide herbicides produce resistant weeds. It has the characteristics of high efficiency, low toxicity and low residue.

Features of cyhalofop-butyl 

(1) Highly safe for rice. Even if it exceeds the recommended dosage several times, it will not cause phytotoxicity to rice.  

(2) Wide range of prevention and control. It has special effects on chinensis and barnyardgrass, and also prevents more than 30 kinds of grass weeds, such as paspalum, crabgrass, foxtail, goosegrass, and melon. The dosage is 60-90g/hm2, and it is ineffective against Cyperaceae weeds and broad-leaved weeds. the

(3) Wide application range and wide application period. It can be used for indica and japonica rice, and can be used in various cultivation methods, such as dry seedling raising, water seedling raising, direct seeding, throwing seedlings, transplanting seedlings, etc. It will not cause phytotoxicity when used from the seedling stage to the jointing stage. the

(4) Strong penetration, fast absorption. cyhalofop-butyl is an aryloxyphenoxypropionic acid herbicide, which is easily absorbed by plants. It rains 1 hour after the application, which will not affect the efficacy of the drug.

With its high activity, good selectivity, low dosage and low toxicity, cyhalofop-butyl is a chiral and fluorine-containing pesticide with high efficiency, environmental protection and safety.

Cyhalofop-fop mode of action

Flufenate is the only aryloxyphenoxypropionic acid herbicide with high safety to rice. Like other varieties of this type, this agent is also a systemic herbicide, which is mainly absorbed by the leaves and leaf sheaths of the plant, conducted by the phloem, and accumulated in the meristem area of the plant. By inhibiting acetyl-CoA carboxylase (ACCase ), so that the synthesis of fatty acids is stopped, the growth and division of cells cannot be carried out normally, the membrane system and other lipid-containing structures are destroyed, and finally the weeds die. After application, weed growth stopped. 5-7 days after the application, the weeds began to yellow and brown from the heart leaves, and then gradually spread to the whole plant, and finally died.

It takes 1-3 weeks for cyhalofop-butyl to be absorbed and weeds die slowly, depending on the environment and the size of the weeds. The symptoms of weeds after spraying are as follows: the buds at the 4-leaf stage shrivel, and finally wither and die; Leaf changes are minimal and remain green, and these symptoms can also be observed on the same period of tillers.

The selectivity of cyhalofop-methyl is based on different metabolic rates. In rice, cyhalofop-methyl can be rapidly degraded into a diacid state that is inactive to acetyl-CoA carboxylase, so it is highly safe for rice. It is safe for subsequent crops because it degrades rapidly in soil and typical paddy water. the

Suggestions for the use of cyhalofop-butyl

1. Select the correct dosage form: Since the technical product of cyhalofop-butyl is a white crystalline solid, the specific gravity is 1.2375 (20°C), the boiling point is 363°C, the melting point is 48-49°C, and the vapor pressure is 8.8×10(-9) mmHg (20°C) , Soluble in most organic solvents: 57.3% acetonitrile, 37.3% methanol, 60.7% acetone, 59.4% chloroform, insoluble in water and other physical properties, the effect of processing dosage forms on drug efficacy is quite different, the same amount of active ingredients, dosage form effect The performance is emulsifiable concentrate > dispersible oil suspension concentrate > water emulsion > wettable powder.

2. Select the correct content: the preparation processing is generally processed from the original drug + auxiliary agent + solvent + filler and other materials. Due to the different solubility of cyhalofop-butyl in different solvents and the need for the use of necessary auxiliary agents, in the processed dosage form It is necessary to add a certain amount of additives to improve the efficacy of the drug. The amount of additives added is different for different contents. The formula is scientific and rational. The additives must be added in order to exert the best effect of the active ingredients and are equally effective. The amount of ingredients, under normal circumstances, the effect of the dosage form is 10% > 15% > 20% > 25% > 30% > 40%, except for special additives.

3. Select the appropriate period of application: Different leaf ages of weeds have different sensitivity to cyhalofop-butyl. As the leaf age increases, the sensitivity decreases and the dosage also increases. Generally, the leaf age is small and the dosage is small , the leaf age is large and the dosage is also large. The registered dosage is generally 1.5-2 leaves of Stephania chinensis, and the dosage is small, 10% 60-70ml, 15% 30-50ml, 20% 25-35ml, 25% 24-30ml, 30% 20- 25ml, 40% of 15-20ml, it is difficult for farmers to distinguish the leaf age of rice and Qianjinzi in production. When it is clear, Qianjinzi generally has 4-5 leaves. It is difficult to meet expectations if the registered dosage is still used To be effective, the dosage must be increased. Therefore, in the case of the same dosage of cyhalofop-butyl, the control of Qianjinzi should be small rather than large. Due to the high safety of cyhalofop-butyl on rice, cyhalofop-butyl can be used to control D. chinensis after direct-seeding rice with 2-3 leaves. If it is controlled and eliminated when the daughter of the daughter is distinguished, it is the 3-5 leaf stage of rice at this time. To see the naked eye effect of cyhalofop-ester on A. chinensis, 3-4 leaves of rice is the best time to control A. chinensis.

4. Select the correct dosage: Qianjinzi has also developed a certain resistance to cyhalofop-butyl, and the expected effect can only be achieved by increasing the dosage. In areas with strong resistance to Qianjinzi, the dosage of active ingredients per mu of cyhalofop is between 30- The dosage ranges from 50 grams, and in areas with less resistance, the minimum dosage is more than 20 grams of active ingredients. cyhalofop-butyl is currently popularly used to control older barnyardgrass and resistant barnyardgrass. The dosage should be larger in the old direct-seeding rice area, and lower in the new direct-seeding rice area. The normal dosage of active ingredients ranges from 20-30 grams.

5. Appropriate drug selection technology: cyhalofop-butyl is a systemic conductive herbicide, which must be absorbed by stems and leaves, and conducted in the weed plant, acting on the growth point to exert its efficacy. When applying pesticides, let the weed plants fully contact with the liquid medicine as much as possible. When rice uses cyhalofop-butyl, it needs to be drained first, so that more than 2/3 of the weed plants are exposed, sprayed evenly and finely with high concentration, and rehydrated within 24 hours, so that the liquid medicine can be fully absorbed and conducted.

Applications of  cyhalofop-buty 

It is mainly used in rice seedling fields, direct seeding fields, and transplanting fields to control barnyard grass, stephenia, goosegrass and most malignant grass weeds, and can effectively control quinclorac, sulfonylureas, and amides. Resistant weeds.

Package of cyhalofop-buty

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.

Retail Package:

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

Suppliers of cyhalofop-butyl

Agripestcide is a professional pesticide chemicals manufacturer, supplying good and effective herbicide cyhalofop with high quality and good service. If you are looking for herbicide cyhalofop-butyl, please feel free to contact us for latest price.



Molecular Weight



Melting Point

47.0 to 51.0 °C

Boiling Point

49.1±45.0 °C(Predicted)

Physical State

crystallize solid






25kg Cardboard barrel




Ventilation low temperature drying




2 years

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