Recently, Shanghai Qixuan Chemical Technology Co., Ltd. completed a bulk shipment of EL36, castor oil ethoxylate, to multiple downstream customers. As a flagship grade within the company’s non‑ionic surfactant portfolio, EL36 has once again won market recognition for consistent batch quality and reliable supply capacity. A seemingly understated castor oil ethoxylate, why can it find solid applications across seemingly unrelated sectors including cleaning, oilfield, pesticide formulation, asphalt emulsification and mineral processing?
1. An Overview of EL36: A Multi‑functional Surfactant Derived from Renewable Feedstock
EL36, chemically named castor oil ethoxylate, is a non‑ionic surfactant with CAS No. 61791‑12‑6. It is synthesized by the addition polymerization of natural castor oil with ethylene oxide at an approximate molar ratio of 1:36. Its lipophilic moiety originates from the glyceride skeleton of ricinoleic acid in castor oil, while the hydrophilic segment consists of 36 EO units. Therefore, EL36 delivers excellent emulsification, dispersion, solubilization, wetting, lubrication and antistatic properties. It has an HLB value of around 13 and is classified as a typical O/W (oil‑in‑water) emulsifier.
Different from petroleum‑based surfactants, EL36 is manufactured from renewable plant feedstock. It features low toxicity and ready biodegradability, which grants it inherent environmental advantages. Against the backdrop of increasingly stringent global regulations on chemical environmental performance, this characteristic forms its fundamental competitive edge over conventional auxiliaries.
2. Performance Analysis: The Underlying Logic for Its Cross‑sector Adaptability
The applicability of a surfactant largely depends on its compatibility with diverse formulation systems. The wide acceptance of EL36 as a universal auxiliary stems from its core performance merits:
- Excellent stability over a broad pH range: Maintains chemical stability in diluted acidic, alkaline and saline systems, adapting to complex water quality and process conditions.
- Low electrolyte sensitivity: Tolerant to water hardness, capable of forming stable emulsions under water hardness up to 900 ppm.
- Powerful emulsifying and dispersing capacity: Rapidly homogenizes oil and water phases, suppressing phase separation, sedimentation and demulsification, and substantially improving the storage stability of finished formulations.
- Solubilization and antistatic functions: Solubilizes essential oils, fragrances and lipophilic active ingredients, while offering lubricity and antistatic performance with low residual risk and mild profile.
This integrated set of properties enables EL36 to break industrial boundaries and serve diverse end markets.
3. Application Landscape: A Versatile Workhorse from Pesticide Formulation to Oilfield Operations
**Pesticide formulation** represents the most mature application field for EL36. In EC (emulsifiable concentrate), EW (oil‑in‑water emulsion), SE (suspoemulsion) and ME (microemulsion) systems, EL36 acts as an efficient emulsifier, dispersant and co‑solvent. It improves the solubility and dispersion uniformity of technical active ingredients in organic solvents, enhances spreading, adhesion and penetration of spray droplets on crop foliage, raises the utilization rate of active components and reduces pesticide residues. With low toxicity and biodegradability, it aligns well with the global trend of green agriculture and residue reduction. In pesticide emulsifier packages, EL36 is frequently compounded with anionic surfactants such as calcium dodecylbenzenesulfonate for synergistic performance, especially suitable for organophosphates and 2,4‑D ester formulations.
In the“cleaning industry”, EL36 combines mildness with outstanding solubilizing power. It quickly emulsifies and saponifies oily soils and features easy rinsing with minimal residue. It can be deployed in industrial hard‑surface and equipment cleaning, as well as household and industrial detergent formulations as a solubilizer for lipophilic additives, balancing detergency and mildness.
For “oilfield production and mineral processing”, EL36 functions as an emulsifier and dispersant in drilling fluid, production chemical and flotation reagent packages. It modifies oil‑water interfacial characteristics and boosts operational efficiency. Its robust dispersion performance also benefits mineral flotation and slurry handling systems.
“Asphalt emulsification” is another key market for Qixuan Chemical. EL36 can be incorporated as the non‑ionic component in emulsifier systems for slow‑set and medium‑set bituminous emulsions, facilitating the formation of stable asphalt‑in‑water emulsions to meet varied construction requirements.
Beyond the above core sectors, EL36 is widely adopted in textile dyeing and finishing as a penetrant, levelling agent, softener and antistatic agent; in coatings and inks for pigment dispersion, flow and adhesion improvement; as well as in leather processing, papermaking and emulsion polymerization, covering most mainstream fine chemical auxiliary scenarios.
4. Differentiated Strengths of Qixuan Chemical: Import‑substitutable Premium Grade EL36
Castor oil ethoxylate products are widely available on the market, yet Qixuan EL36 carries distinctive advantages. Supported by self‑optimized production processes, the company implements strict batch‑to‑batch inspection of critical technical indicators including viscosity, hydroxyl value, cloud point and water solubility. The product boasts high purity and exceptional lot consistency, matching the performance benchmarks of leading international counterparts. It provides a viable import substitution option, helping customers cut raw material costs without compromising formulation performance.
Furthermore, Qixuan is equipped with large‑scale continuous production capacity and flexible fast‑track delivery. It accepts bulk orders for domestic and overseas clients and provides tailored formulation adjustment services together with comprehensive technical support, safeguarding the stability of downstream supply chains.
5. Outlook: Pursuing Green, High‑end and Fine‑chemical Development
Driven by the global transition of fine chemicals toward greener, high‑value and customized solutions, plant‑derived castor oil ethoxylate EL36 is witnessing sustained demand growth. Focused on the surfactant business, Shanghai Qixuan Chemical Technology Co., Ltd. will continue to optimize EL36 and other core products, expand its application in high‑end scenarios, and deliver efficient, eco‑friendly and reliable auxiliary solutions for cleaning, oilfield, pesticide, asphalt, mineral processing and other industrial sectors. The company marches steadily toward its goal of building a benchmark brand for castor oil ethoxylate products.
Post time: Oct-29-2026