Everything you need to know about surfactant for herbicides

Everything you need to know

about surfactant for herbicides

This article introduces in detail what surfactant for herbicides is, what is the standard for measuring good surfactant for herbicides, information about non ionic surfactant for herbicides, and How to make surfactant for herbicides, the cost of surfactant for herbicides, hope to help herbicide manufacturers, distributors and final consumers.

Content table

1. what is a surfactant for herbicides ?
what is non ionic surfactant for herbicides
2. what is a good surfactant for herbicides ?
3. how to make surfactant for herbicides?
How do you make non ionic surfactant for herbicides ?
how to improve the effect after adding surfactant to compounded herbicides?
4. how much surfactant for herbicides?
5. where to buy surfactant for herbicides?

GM surfactant for herbicides apply to different herbicides

 what is a surfactant for herbicides ?

Surfactant for herbicides with a certain ratio of non-ionic surfactant is a chemical adjuvant that plays the role of herbicide wetting agent, improving herbicide penetration, uniform coverage, and overall efficacy. In the production of herbicide formulations, adding a certain percentage of herbicide adjuvant can not only reduce costs but also enhance the efficacy.

Surfactant for herbicides allows herbicide solutions to adhere better to the plant surface and help break the resistance of the plant to absorb the chemicals applied to it. The herbicide adjuvant, which breaks the surface tension between herbicide and leaf surface, improves the effectiveness of herbicide so that herbicide sprays can stay on the leaf surface long enough to be absorbed by weeds, reduces the bouncing and slipping of the solution on the leaf surface during application, improve penetration rate, increase the utilization rate of herbicide, and increase the killing power of herbicide.

Especially in rainy areas, the role of surfactant for herbicides is more obvious, which can reduce the washout of herbicides attached to weed foliage by rain, breaking surface tension of water. Adjuvants also have a stabilizing effect on herbicides, enhancing the storage stability of herbicides at high and low temperatures.

the effect of herbicides surfactant
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what is a good surfactant for herbicides ? 

What are the criteria for measuring a good herbicide adjuvant ?

1. Stability. Adjuvant must be stable in weed killer, physical stability and chemical stability in two aspects. Physical stability means that when the herbicide is stored at high temperature or low temperature, the adjuvants cannot precipitate or destroy the stability of the herbicide; chemical stability means that the adjuvant cannot react with the herbicide and will not change the nature of the herbicide or cause degradation of the active ingredient of the herbicide.

2. Adjuvant can significantly reduce the surface tension of herbicides. Because the fundamental purpose of using adjuvant in herbicides is to increase efficiency, adjuvant should be able to reduce the surface tension and penetration rate of herbicides, reduce the bouncing and slipping of the liquid on the leaf surface during application, and can accelerate the penetration of the liquid, especially in rainy areas, which can reduce being washed by rain, so as to improve the utilization rate of herbicides.

3. The price should not be too expensive and should be quite cost-effective so that it is economically feasible.

herbicide adjuvant

Surfactants are widely used in agrochemicals. There are many non-ionic and anionic application scenarios. It is impossible to select the best surfactant for herbicides, but only the most suitable adjuvant. Taking the application of adjuvant in glyphosate as an example, several types of glyphosate surfactants from Nanjing GM Company are very representative:

① Nonionic polyether type: Tallow amine polyether is used as the main raw material, supplemented with other nonionic and zwitterionic to improve the wetting, penetration and salt resistance of the adjuvants;

② Non-ionic, amphoteric-based new environmental protection adjuvant that do not contain tallow amine. Under the background of banning tallow amine and nonylphenol in various countries in the world, we have developed this cost-effective surfactant for herbicides. It has excellent Wetting and Penetration Properties.

③ There are two kinds of special amine low-foaming surfactant for herbicides. One is commonly used at home and abroad, with aliphatic amines as the main raw material, supplemented by several non-ionic surfactants to improve wetting, penetration and formulation stability. The surfactant for herbicides is light yellow and can be used in glyphosate isopropylamine salt, glyphosate dimethylamine salt, glyphosate potassium salt and glyphosate ammonium salt. It has excellent long-lasting foaming performance and synergistic performance.

Another low-foaming surfactant for herbicides is a compounded adjuvant of special amines and zwitterions. This adjuvant is colorless and transparent. The prepared preparation has good weather resistance, and it can still maintain the anti-foaming properties in the storage environment of light or high temperature. Very good stability keeps the original color of the preparation for a long time, and the color deepening is not obvious. The adjuvant can be used in general glyphosate isopropylamine salt, glyphosate dimethylamine salt, glyphosate potassium salt and glyphosate ammonium salt, and also has excellent long-lasting foaming performance and high efficiency and synergistic performance.

④ Anionic and non-ionic compound thickening and synergistic adjuvant, this type of adjuvant not only guarantees the basic drug efficacy and stability required by the dosage form, but also has thickening properties. This type of auxiliaries includes general-purpose thickening auxiliaries, which can be used for all salt forms of glyphosate; there are also special thickening and synergistic auxiliaries, which are formulated for different dosage forms and different viscosity requirements, and are more cost-effective.

We have successful development experience in the glyphosate SL in the table below.


dosage form



acid meter

Salt meter


Glyphosate Isopropylamine Salt



Viscosity, non-viscosity and low foam additives are available













Glyphosate Dimethylamine Salt



Potassium glyphosate









Ammonium glyphosate



how to make surfactant for herbicides?

First of all, we need to choose the appropriate type of adjuvant according to the nature of herbicide, such as anionic, cationic, amphoteric, non-ionic surfactants or their compounding products.

Secondly, according to the customer's requirements for the herbicide, such as whether viscosity is required, how much surface tension needs to be achieved, etc., the proportion of adjuvant compounding should be formulated.

Finally, we should conduct physical and chemical performance tests, efficacy tests and other experiments on the adjuvant that meet the required formulations.


1, Which adjuvant can be applied to weed killer ? and how to improve the effect after adding wetting agent to compounded herbicides

Strictly speaking, surfactants should be added to herbicides to improve the utilization rate. Commonly used herbicides in the market include glyphosate, glufosinate, diquat, paraquat, 2,4D, dicamba, bentazone, etc. , These weed killer can be added with surfactants, which can reduce the surface tension of the herbicide and increase the penetration rate, reduce the bouncing and sliding of the liquid medicine on the leaf surface during application, accelerate the penetration of the liquid medicine, and improve the use effect of the herbicide . In addition, the price of these weed killer is relatively high. After adding surfactants, the utilization rate of weed killer can be improved, which can save costs and increase the use effect of weed killer.

2, What kinds of compound weed killer are there, and how to add surfactants correctly?

There are many kinds of compound weed killer. For example, the compound of glyphosate is mostly compounded with 2,4-D, 2-methyl-4-chlor, dicamba, glufosinate, etc., because the physical and chemical properties of different original drugs The difference is very large, so the stability of the compound dosage form is much less than that of glyphosate single dosage form. The relevant compounding of glyphosate is first to solve the problem of dosage form stability, and then to improve the synergistic effect, so as to maximize the performance of the two compounded original drugs.

The compound dosage forms related to glyphosate are as follows: 

Compound dosage form









Salt Equivalents, isopropylamine salt or dimethylamine salt


Glyphosate-IPA+2,4D dimethylamine salt


Glyphosate + 2 methyl 4 chlorine


acid meter


acid meter


Salt meter


Salt meter


acid meter


Salt meter

Glyphosate + Glufosinate


Ammonium Glyphosate + Glufosinate Ammonium


Glyphosate + Dicamba




acid meter, Can be converted into ammonium salt, dimethylamine salt, isopropylamine salt


Isopropylamine salt meter

The compound dosage forms related to glufosinate-ammonium are as follows:




Glufosinate + Glyphosate


Glufosinate + glufosinate ammonium salt



Glufosinate + glufosinate ammonium salt / isopropylamine salt / potassium salt






Glufosinate +MCPA-Na / DMA salt









Glufosinate +2,4-D dimethylamine salt





Glufosinate + clomazone sodium salt

Many people want to know how to make non ionic surfactant for herbicides to weed control, and some questions have been raised, and here are brief answers.


Is dish soap A good surfactant for herbicide?

The main component of dish soap is also a surfactant. In principle, dish soap can also reduce the surface tension of herbicides, which can play a synergistic role. But strictly speaking, it is not recommended to use dish soap as a surfactant for herbicides, because it may be composed of anionic, nonionic or amphoteric surfactants, which can play a synergistic role in herbicides. Synergistic, and possibly antagonistic, herbicide inactivation. It is best to consult a professional surfactant manufacturer to choose a surfactant usage plan in a targeted manner. In addition, the price of general herbicide surfactants is 5-10$ per gallon, and the price of dish soap is much more expensive than this, so it is not cost-effective to use.

Is dishwashing detergent a non ionic surfactant?

Dishwashing liquid is generally composed of a variety of surfactants. Each surfactant is responsible for different functions, such as thickening, foaming, cleaning or sterilization, etc. Therefore, dishwashing liquid may be compounded with anions, non-ions or even zwitterions.

Is sodium lauryl sulfate nonionic surfactant?

Sodium lauryl sulfate is an anionic surfactant, white or light yellow powder, easily soluble in water, insensitive to alkali and hard water. It has decontamination, emulsification and excellent foaming power. It is an anionic surfactant that is slightly toxic to the human body, and its biodegradation degree is >90%.

 how much surfactant for herbicides?

The price of surfactant for herbicides is generally not high, take herbicide aqueous as an example, its auxiliary price is generally 1.5-2$/kg, and the cost of auxiliary use per ton/kiloliter of herbicide is 150-300$. This price range, almost covers the cover common herbicide quality to high-end products. The price of surfactant for different varieties of herbicides, such as glyphosate, glufosinate, diquat and paraquat, does not vary much, but for special compounding products, such as glyphosate and 2,4D compounding auxiliaries, glyphosate and glufosinate ammonium compounding auxiliaries, etc., the surfactants need to be formulated in a targeted manner and the price will be higher.

where to buy surfactant for herbicides?

Surfactant for herbicides should be purchased from professional surfactant companies who have different solutions for different herbicides and the performance of the herbicide to be started by the customer.

The choice of surfactant is important, if you do not choose the right surfactant, it will affect the stability of the herbicide, for example, bad or unsuitable surfactant will cause the herbicide to be degraded or delaminated, resulting in losses.

We are a professional surfactant for herbicides research and production company in China, which can customize different surfactant for herbicides and provide solutions to produce various herbicide formulations. This is the introduction of our company and the list of surfactant for herbicides products.


surfactant for herbicides

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Post time: Mar-01-2023