Applications of Ethoxylated Castor Oil (36EO) in Industrial Manufacturing

Ethoxylated Castor Oil (36EO) serves as a high-performance nonionic surfactant, widely incorporated into specialized formulations across industrial sectors. As a direct manufacturer, we support strict quality controls, stable supply, and process-specific technical collaboration for critical downstream applications.

1. Textile Auxiliaries for Dyeing and Finishing

In textile processing, this ethoxylate acts as a powerful dispersing agent and emulsifier for dyeing synthetic or cellulosic fibers. The unique 36-mole EO chain enhances wetting, fiber penetration, and dye bath stability during high-shear and high-temperature processing. Customers rely on consistent performance in jet dyeing, padding, and continuous finishing lines, improving color yield while minimizing streaks or re-deposition. Compatibility with a range of anionic and nonionic chemistries distinguishes its utility in synthetic and blended fabrics.

Industry compliance standards

• OEKO-TEX Standard 100 Annex 6 (textile chemical safety)
• ZDHC MRSL v3.0 (input chemical restrictions)
• REACH Annex XVII, SVHC (restricted substances declaration)
• ISO 14001 (environmental management compliance)

Typical usage ratio

• 0.5–2.0% owf (on weight of fabric) for disperse dyeing
• 0.6–1.5 g/L in finishing baths
• Adjusted based on fiber type, bath ratio, and dye class

Downstream process integration

• Added at desizing, scouring, and dyeing stages as primary or co-emulsifier
• Blended with leveling and wetting agents in mixers or pre-diluted tanks
• Metered inline via dosing pumps in continuous operations
• Supports consistent mud removal and maintains bath homogeneity

Final product types

• Polyester and nylon apparel fabrics
• Cotton-blend home textiles
• Nonwoven automotive and hygiene rolls
• Yarn and tow stock prepared for garment dyeing

2. Polyurethane Foam Production (Flexible and Rigid)

Flexible and rigid polyurethane foam manufacturers utilize this surfactant to promote uniform cell nucleation, controlled foam rise, and superior open-cell structure. The balance of hydrophilic-lipophilic character in the 36EO grade aligns with polyol system requirements, affording controlled compatibility and smooth integration without collapse or shrinkage. Its low residual fatty content supports stable reactivity, preventing voids and enhancing mechanical resilience. Preferred in formulations for automotive seats, building panels, and thermal insulation.

Industry compliance standards

• ISO 9001 (quality system for foam manufacturing)
• ASTM D3574 (flexible foam test methods)
• UL 94 (flammability of foam applications)
• REACH, RoHS for restricted substances and heavy metal limits

Typical usage ratio

• 1.0–2.5 php (parts per hundred polyol) for flexible slabstock foams
• 0.6–1.2% in rigid foam formulas depending on cell size target
• Ratio adjusted for polyol type and process temperature

Downstream process integration

• Batch-mixed into polyol blend tanks before catalyst/iso addition
• Injected via high-pressure dosing lines in continuous foam lines
• Acts as a co-surfactant with silicone types to adjust microstructure
• Compatible with flame retardant or anti-static additive packages

Final product types

• Automotive seat and cushion foams
• Construction insulation panels
• Mattress and furniture foams
• Refrigeration and HVAC rigid foam parts

3. Agrochemical Emulsifier for EC, EW, and SC Formulations

Agrochemical formulators depend on the 36EO grade as an efficient emulsifier for emulsifiable concentrate (EC), emulsion-in-water (EW), and suspension concentrate (SC) crop protection products. This surfactant stabilizes multi-phase systems, facilitating rapid emulsification with aqueous diluents in the field. It demonstrates strong performance in improving pesticide dispersion and maintaining low residue splits over extended storage, without interfering with sensitive active ingredients or adjuvant systems. Compatible with diverse pesticide actives and mineral oil carriers.

Industry compliance standards

• FAO/WHO Recommended Specifications for Plant Protection Products
• EU Regulation EC 1107/2009 (Plant Protection Product Regulation)
• EPA 40 CFR Part 180 (Inert Ingredients in Pesticides)
• ISO 9001 for formulation quality control

Typical usage ratio

• 2–8% of total formulation weight for EC and EW types
• Higher ratios (up to 12%) in challenging actives or high-viscosity systems
• Optimized via phase inversion and stability testing; must pass CIPAC ring and accelerate storage

Downstream process integration

• Premixed with solvents or oil carriers during milling or homogenization
• Added pre-emulsification to co-solubilize actives and adjuvants
• Homogenized at controlled shear in reaction or holding tanks
• Supports anti-foaming, wetting, and drift control as co-adjuvant

Final product types

• Herbicide and pesticide ECs for cereals, orchards, or rice paddies
• Fungicide EWs for horticulture and vineyards
• Insecticide SCs for field and greenhouse application
• Specialty crop oil adjuvants and tank mix enhancers

4. Metalworking Fluids and Lubricant Additive

Manufacturers of metalworking fluids incorporate this ethoxylate in semi-synthetic and synthetic emulsions, providing strong oil-in-water emulsification, detergent function, and boundary lubrication. Its chemical structure benefits anti-stick, anti-corrosive, and cooling properties, supporting chip removal and longer tool life in high-speed, high-load machining. Particularly effective for emulsifying base oils in soluble cutting fluids for ferrous and non-ferrous applications, improving surface finish while minimizing deposit build-up on equipment.

Industry compliance standards

• ASTM D4485 (Performance of Engine Oils)
• DIN 51385 (Testing of Metalworking Fluids)
• REACH registration for lubricant ingredients
• ISO 12925 (Lubricants for industrial gear systems)

Typical usage ratio

• 0.5–4.0% for soluble oil metalworking fluids
• 0.8–2.2% for synthetic and semi-synthetic coolants
• Adjusted based on oil content, machine type, and required fluid stability

Downstream process integration

• Dissolved into base oil and water phases before final emulsion
• Combined with corrosion inhibitors or anti-foam agents under agitation
• Filtered before drum or IBC filling to control viscosity and clarity
• Supports blending during hot and cold process routes

Final product types

• Soluble cutting oils
• Semi-synthetic machining coolants
• Grinding and drawing fluids
• Anti-corrosion metal protection oils

5. Cosmetics and Personal Care Emulsions

Personal care product formulators select this peg-36 castor derivative as a skin-safe nonionic emulsifier in creams, lotions, hair conditioners, and cleansing emulsions. Its mildness, high HLB value, and compatibility with plant- or mineral-based oil phases enable stable white creams and transparent gels without irritation or heavy residue. Demonstrates proven performance in rinse-off and leave-on formulations, enhancing spreadability and sensorial feel. Preferred for applications where PEG-based ingredients must comply with international cosmetic safety regulations.

Industry compliance standards

• EU Cosmetics Regulation (EC) No 1223/2009
• ASEAN Cosmetic Directive
• US FDA 21 CFR 720.4 (cosmetic ingredient review)
• ISO 22716 (GMP for cosmetic manufacturing)

Typical usage ratio

• 1.5–5.0% in O/W creams and lotions
• Up to 8% in cleansing oils and emulsifier gels
• Levels fine-tuned by stability and performance testing on each formulation

Downstream process integration

• Added to oil phase prior to hot emulsion blending
• Homogenized at shear rates supporting gloss and texture formation
• Compatible with botanical actives, esters, or silicones
• Supports preservation systems and pH adjustment during cooling

Final product types

• Facial cleansers and makeup removers
• Hydration creams and body lotions
• Hair conditioners and treatment serums
• Sunblock and after-sun care emulsions

6. Industrial Detergent and Hard Surface Cleaners

Formulators of industrial-scale cleaners employ this nonionic surfactant for its ability to emulsify oils, suspend particulate soils, and increase wetting of hard surfaces. Its chemical profile supports cleaning-in-place (CIP) processes and high-alkali detergents for food production, bottling, and institutional cleaning, maintaining low foam and residue. Compatible with EDTA, phosphates, and builders, our material withstands oxidizer presence and high-pressure spray conditions, supporting occupational health guidelines for operator safety.

Industry compliance standards

• US EPA Safer Choice program (ingredient review)
• EN 1276 (disinfectant/cleaner efficacy)
• FDA 21 CFR 178.1010 (indirect food contact cleaners)
• Chemical hazard communication: GHS/CLP labelling (EC No 1272/2008)

Typical usage ratio

• 0.8–3.0% for low-foam CIP and spray cleaners
• 2.5–6.0% for degreasing high-oil industrial soils
• Adjusted for water hardness, substrate, and application mode

Downstream process integration

• Dissolved into builder base at concentrate manufacturing
• Blended into aqueous phase with anti-redeposition agents
• Combined with enzymatic or solvent boosters in batch
• Allows formulation of single- and multi-component cleaning systems

Final product types

• Alkaline CIP cleaners for dairies and beverage plants
• Institutional kitchen and surface degreasers
• Heavy-duty warehouse and logistics area floor cleaners
• Bottle and equipment wash fluids