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For many industrial formulations, the choice of surfactant is not only about whether it can emulsify or wet a material. Buyers also need to check whether the selected grade fits the oil phase, water phase, processing temperature, appearance requirement and final application system.
This is especially true for Castor Oil Ethoxylate, also known as Ethoxylated Castor Oil. It is a nonionic surfactant commonly used in emulsification, wetting, dispersion and solubilizing systems. However, different grades may show very different behavior in actual formulation work.
Dotachem supplies Castor Oil Ethoxylate EL-10, EL-20, EL-40 and EL-80. These grades differ in HLB value, cloud point, appearance and hydrophilic-lipophilic balance, so they should be selected according to the real application instead of product name alone.
What Is Castor Oil Ethoxylate?
Castor Oil Ethoxylate is produced by the ethoxylation of castor oil. Because of its nonionic surfactant structure, it can be used in systems where emulsification, wetting, dispersion or compatibility support is required.
In practical purchasing, customers usually compare Castor Oil Ethoxylate by several key indicators:
A lower HLB grade may be more suitable for oil-rich systems, while a higher HLB grade is usually more hydrophilic and may work better in water-dispersible systems. This is why EL-10, EL-20, EL-40 and EL-80 should not be treated as fully interchangeable materials.
Castor Oil Ethoxylate in Emulsification Systems
One common use of Castor Oil Ethoxylate is emulsification. In many formulations, oil-based ingredients and water-based ingredients need to stay evenly mixed during production, storage and use.
If the emulsifier is not suitable, the system may show phase separation, unstable appearance, uneven active ingredient distribution or poor application performance. A proper Castor Oil Ethoxylate grade can help improve the interaction between oil and water phases and make the formulation easier to process.
For example, EL-10 and EL-20 have relatively lower HLB ranges and may be considered when the system needs stronger oil-phase affinity. EL-40 and EL-80 have higher HLB ranges and are more suitable for systems requiring stronger hydrophilic performance or better water dispersibility.
Wetting and Dispersion Support
Castor Oil Ethoxylate can also support wetting and dispersion in formulations containing pigments, powders, fillers, oils or functional additives.
In coatings and inks, poor wetting may affect pigment dispersion and color uniformity. In textile auxiliaries, wetting performance can influence how evenly the treatment liquid contacts the fiber. In agrochemical formulations, wetting and dispersion may affect how active ingredients are incorporated into the final system.
By helping reduce the interface between different materials, Castor Oil Ethoxylate can make the formulation easier to mix and stabilize. For buyers, the important point is to match the grade with the actual system rather than choosing only by the general product name.
Dotachem Castor Oil Ethoxylate Grades
Dotachem provides several Castor Oil Ethoxylate grades for different industrial and formulation needs, including EL-10, EL-20, EL-40 and EL-80.
|
Grade |
General Characteristic |
Possible Use Direction |
|
EL-10 |
Lower HLB, stronger oil-phase affinity |
Oil-rich emulsification systems |
|
EL-20 |
Lower to medium HLB |
Emulsification and wetting support |
|
EL-40 |
Higher HLB, better hydrophilicity |
Water-dispersible systems and balanced emulsification |
|
EL-80 |
Highest HLB among listed grades |
Systems requiring stronger hydrophilic performance |
EL-10 and EL-20 are transparent yellow oil-like products with relatively lower HLB values. They may be considered for formulations where oil-phase affinity or lower ethoxylation level is required.
EL-40 has an HLB range of 13–14 and a cloud point of 70–84°C. It is often more suitable for systems that need better hydrophilicity and balanced emulsification performance.
EL-80 has an HLB range of 15.5–16.5 and appears as a light yellow to pale yellow solid. It may be selected for formulations requiring stronger hydrophilic properties.
Across these listed grades, water content is controlled at ≤1.0%, and the pH range of 1% aqueous solution is 5.0–7.0. These indicators help customers compare grades before sample testing or order confirmation.
Dotachem Supply Support
Dotachem has supplied nonionic surfactants for more than 10 years. For new formulation development, surfactant replacement or bulk purchasing, Dotachem can support product specification confirmation, sample discussion, packaging information and quotation communication according to actual order needs.
In addition to Castor Oil Ethoxylate, Dotachem also supplies related surfactant and formulation raw materials, including Nonylphenol Ethoxylate (NPE), Lauryl Alcohol Ethoxylate (AEO), Polyethylene Glycol (PEG), Glycerine Ethoxylate and Oleic Acid Ethoxylates. Customers looking for grade comparison, sample discussion or bulk quotation support can contact Dotachem for further product information.
