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Agnique KE 3551 is a nonionic surfactant based on ethoxylated and propoxylated 2-ethylhexanol (branched C8 alcohol alkoxylate) produced by BASF (formerly Cognis), used as an adjuvant and surfactant in crop protection formulations and agricultural applications.
Agnique KE 3551 functions as a spreader, wetter, penetrant, and emulsifier in agrochemical formulations, improving the distribution, adhesion, and uptake of active ingredients when applied to plant surfaces.
Agnique KE 3551 belongs to the Agnique product line of BASF, which encompasses a broad range of specialty surfactants, alkoxylates, and formulation auxiliaries for agriculture, personal care, home care, and industrial applications.
Manufacturer: BASF SE (formerly Cognis Deutschland GmbH; Cognis acquired by BASF in 2010)
Product Number (PRD): 30530396
Product Type: Alkoxylate / Alcohol alkoxylate; Nonionic surfactant; Agricultural adjuvant
Product Line: Agnique (BASF)
Brand: Agnique® (registered trademark of BASF SE)
Industries: Agriculture — Additives for crop protection
Synonyms: Agnique KE 3551, Agnique® KE 3551, BASF Agnique KE 3551, 2-Ethylhexanol ethoxylated propoxylated, Ethoxylated propoxylated 2-ethyl-1-hexanol, Branched C8 alcohol alkoxylate (EO/PO), 2-Ethyl hexanol EO-PO nonionic surfactant, Alcohol alkoxylate EH, EO/PO copolymer of 2-ethylhexanol, CAS 64366-70-7
Agnique KE 3551 is based on 2-ethylhexanol, a branched C8 fatty alcohol, which has been subjected to ethoxylation and propoxylation to yield a block or mixed EO/PO (ethylene oxide/propylene oxide) copolymer alkoxylate with the IUPAC name oxirane, 2-methyl-, polymer with oxirane, mono(2-ethylhexyl) ether.
Agnique KE 3551 is exempt from tolerance requirements under US EPA 40 CFR 180.910 and 40 CFR 180.960 as an inert ingredient in pesticide formulations, confirming its safety and regulatory acceptability as a spray adjuvant in registered crop protection products.
Agnique KE 3551 is a nonionic surfactant and, as an alcohol alkoxylate based on a branched alcohol, exhibits low foaming properties, good wetting and spreading performance, rapid solubilization, and stability across a wide range of pH values and ionic environments.
Agnique KE 3551 is readily biodegradable, consistent with the established biodegradability profile of branched alcohol ethoxylates meeting OECD 301 standard test criteria, supporting its use in environmentally sensitive agricultural applications.
Agnique KE 3551 is used as a component in adjuvant formulations that enhance the efficacy of herbicides, fungicides, and insecticides by improving the contact, spreading, and uptake of the active ingredient on plant leaf surfaces, particularly in post-emergence spray applications.
Agnique KE 3551 belongs to a class of nonionic alcohol alkoxylate adjuvants with HLB values in the range of 8 to 13, consistent with the typical HLB requirements described for activating adjuvants used in crop protection formulations to facilitate herbicide and pesticide uptake.
Uses of Agnique KE 3551:
Agnique KE 3551 is used as a nonionic surfactant adjuvant and spray additive in crop protection formulations for post-emergence herbicide, fungicide, and insecticide applications, improving spreading, wetting, and retention on plant leaf surfaces.
Agnique KE 3551 is used as an emulsifier and dispersant in emulsifiable concentrates, microemulsions, aqueous flowables, and oil-based flowable pesticide formulations, contributing to physical stability and ease of dilution.
Agnique KE 3551 is used as a penetration enhancer and activating adjuvant in tank-mix applications, where it is added to the spray solution alongside registered pesticides to improve the foliar absorption of the active ingredient, particularly for systemic herbicides and fungicides.
Agnique KE 3551 is used as a low-foam wetting agent in agricultural spray formulations requiring good wetting performance without excessive foam generation, which could interfere with spray equipment operation and coverage uniformity.
Agnique KE 3551 is used as a component in adjuvancy product lines for improving the uptake of herbicides such as glyphosate, post-emergence broadleaf herbicides, and other systemic active ingredients where surfactant-assisted cuticular penetration is critical for efficacy.
Agnique KE 3551 is used in formulations for diverse crops including cereals, oilseeds, vegetables, fruits, and specialty crops where uniform spray coverage and active ingredient uptake are required under variable field conditions.
Agnique KE 3551 is used as a dispersing agent for agrochemical formulations requiring stable suspension of solid particles or emulsification of oil-based active ingredients in water-based spray applications.
Agnique KE 3551 is used as a solubilizing and compatibility-improving agent in complex tank-mix applications combining herbicides, fungicides, insecticides, and foliar nutrients, helping to maintain solution stability and prevent antagonistic interactions between components.
Benefits or Advantages of Agnique KE 3551:
Agnique KE 3551 provides effective wetting and spreading on waxy leaf surfaces, reducing the contact angle of spray droplets and allowing the spray solution to spread uniformly over the target leaf area rather than beading and rolling off.
Agnique KE 3551 promotes foliar penetration of active ingredients by interacting with the epicuticular wax layer of the leaf surface, facilitating diffusion of the active ingredient through the cuticle and into the plant tissue.
Agnique KE 3551 exhibits low foam generation compared to conventional linear alcohol ethoxylates, making it suitable for use in high-pressure spray equipment and boom sprayers where foaming would reduce application efficiency and operator safety.
Agnique KE 3551 is stable in the presence of hard water, dilute acids, alkalis, and a range of active ingredients commonly encountered in agricultural tank mixes, providing reliable performance under diverse field water quality conditions.
Agnique KE 3551 is exempt from US EPA pesticide tolerance requirements under 40 CFR 180.910 and 40 CFR 180.960, facilitating its use in registered crop protection products without the need for additional residue tolerance data, simplifying regulatory approval for formulations.
Agnique KE 3551 is biodegradable and based on a renewable-compatible fatty alcohol feedstock (2-ethylhexanol), supporting formulators in developing more environmentally responsible adjuvant compositions.
Features of Agnique KE 3551:
Agnique KE 3551 is a colorless to light yellow liquid at ambient temperature with low surface tension and good solubility in water and short-chain alcohols, consistent with the physicochemical profile of branched C8 alcohol alkoxylates with intermediate EO/PO content.
Agnique KE 3551 is a nonionic surfactant with low foaming tendency, good solubilization power, rapid dissolution in water, stability in acidic and neutral pH, and compatibility with other nonionic and ionic surfactants commonly used in agricultural formulations.
Agnique KE 3551 does not readily form gel phases upon concentration or cooling, unlike some linear alcohol ethoxylates, which simplifies handling, storage, and formulation at low temperatures.
Agnique KE 3551 has good degreasing and emulsifying properties arising from its amphiphilic EO/PO block structure, with the propylene oxide units providing hydrophobicity and the ethylene oxide units providing hydrophilicity and water solubility.
Chemical Properties of Agnique KE 3551:
Agnique KE 3551 (CAS 64366-70-7) is 2-ethylhexanol ethoxylated and propoxylated, a nonionic polyether surfactant produced by the sequential or mixed addition of ethylene oxide (EO) and propylene oxide (PO) to 2-ethylhexanol, yielding a block or statistical EO/PO alkoxylate.
Agnique KE 3551 is chemically designated as oxirane, 2-methyl-, polymer with oxirane, mono(2-ethylhexyl) ether, and is also known by the synonyms 2-ethyl hexanol EO-PO nonionic surfactant and alcohol (2EH) alkoxylate.
Agnique KE 3551 is chemically stable under normal storage and handling conditions and is compatible with oxidizing conditions, dilute acids, and dilute alkalis typically encountered in agricultural formulation and spray applications.
Agnique KE 3551 is incompatible with concentrated oxidizing agents and strong acids or bases at elevated temperatures; contact with these materials during storage should be avoided.
Production of Agnique KE 3551:
Agnique KE 3551 is produced by the controlled alkoxylation of 2-ethylhexanol with ethylene oxide and propylene oxide in the presence of an alkaline catalyst (typically KOH or NaOH) under controlled temperature and pressure conditions, followed by neutralization and purification.
Agnique KE 3551 production uses 2-ethylhexanol as the lipophilic starter alcohol, and the ratio and sequence of EO and PO addition determine the product's HLB value, cloud point, viscosity, and performance profile in agricultural applications.
Agnique KE 3551 is manufactured by BASF SE (successor to Cognis) and is available through BASF's global supply network for agricultural formulation; product-specific technical data and Safety Data Sheets should be obtained from the local BASF representative prior to formulation and use.
Agnique KE 3551 quality is controlled through verification of active content, hydroxyl value, viscosity, cloud point, color (Hazen), and pH, and is available in liquid form for direct use in formulation or dilution.
Material Safety Data Sheet (MSDS) of Agnique KE 3551:
Handling of Agnique KE 3551:
Agnique KE 3551 should be handled in accordance with good industrial hygiene and safety practices and in compliance with the Safety Data Sheet available from BASF.
Agnique KE 3551 handling requires avoiding contact with eyes and prolonged skin contact, and avoiding generation of aerosols or mist during spraying or pumping operations.
SDS of Agnique KE 3551:
Stability and Reactivity of Agnique KE 3551:
Chemical stability:
Agnique KE 3551 is stable under normal storage and handling conditions.
Reactivity:
No dangerous reaction is expected under normal conditions of use.
Agnique KE 3551 may react with concentrated oxidizing agents, strong acids, or strong alkalis at elevated temperatures.
Conditions to avoid:
Excessive heat.
Direct sunlight.
Freezing (may affect physical form; product solidifies at approximately 7°C).
Contact with concentrated oxidizing agents.
Contact with strong acids or strong bases at elevated temperatures.
Incompatible materials:
Concentrated oxidizing agents.
Strong acids (concentrated).
Strong alkalis (concentrated) at elevated temperature.
Hazardous decomposition products:
Carbon monoxide (CO).
Carbon dioxide (CO2).
Irritating organic vapors and fumes (under fire conditions).
Handling and Storage of Agnique KE 3551:
Handling:
Handle in accordance with good industrial hygiene and safety practices.
Avoid contact with eyes and prolonged or repeated skin contact.
Avoid generation of aerosol or mist during spraying or pumping.
Wash hands thoroughly after handling and before eating, drinking, or smoking.
Storage:
Store in tightly closed original containers in a cool, dry, and well-ventilated area.
Protect Agnique KE 3551 from freezing (pour point approximately 7°C) and excessive heat.
Keep away from concentrated oxidizing agents and incompatible chemicals.
Store away from food, beverages, and animal feed.
First Aid Measures of Agnique KE 3551:
Inhalation:
Move affected person to fresh air.
If mist or aerosol causes respiratory irritation, seek medical advice.
Skin contact:
Wash affected skin with soap and plenty of water.
Seek medical advice if irritation persists.
Eye contact:
Immediately rinse cautiously with clean water for at least 15 minutes while holding eyelids open.
Remove contact lenses if present and easy to do.
Seek medical attention if irritation, redness, or pain persists.
Ingestion:
Rinse mouth with water.
Do not induce vomiting unless instructed by medical personnel.
Seek medical advice if discomfort occurs.
Firefighting Measures of Agnique KE 3551:
Suitable extinguishing media:
Water spray, foam, dry chemical powder, or carbon dioxide.
Specific hazards:
Agnique KE 3551 is combustible.
Thermal decomposition or combustion may produce carbon monoxide, carbon dioxide, and irritating organic fumes.
Protective equipment for firefighters:
Wear self-contained breathing apparatus (SCBA) and full protective clothing.
Firefighting instructions:
Cool exposed containers with water spray.
Prevent contaminated firefighting water from entering drains or waterways.
Accidental Release Measures of Agnique KE 3551:
Personal precautions:
Avoid contact with eyes and skin; spilled Agnique KE 3551 may create a slipping hazard.
Wear suitable protective equipment.
Environmental precautions:
Prevent Agnique KE 3551 from entering drains, sewers, soil, or waterways.
Methods for cleaning up:
Contain spilled Agnique KE 3551 with inert absorbent material.
Collect into properly labeled waste containers for disposal according to local regulations.
Wash contaminated surfaces with water after collection.
Exposure Controls / Personal Protective Equipment of Agnique KE 3551:
Engineering controls:
Provide adequate ventilation, particularly when Agnique KE 3551 is sprayed, heated, or used in mist-generating operations.
Eye protection:
Wear safety glasses or chemical splash goggles where splashing is possible.
Hand protection:
Wear chemical-resistant gloves (nitrile or similar) for prolonged or repeated handling.
Skin and body protection:
Wear suitable protective clothing to prevent prolonged skin contact.
Respiratory protection:
Not normally required under ambient conditions.
Use suitable respirator if mist or aerosol is generated during spraying or heating.
Hygiene measures:
Wash hands after handling Agnique KE 3551 and before eating, drinking, or smoking.
Identifiers of Agnique KE 3551:
Product Name: Agnique KE 3551
Brand: Agnique® (BASF SE)
Product Number (PRD): 30530396
CAS Number: 64366-70-7
IUPAC Name: Oxirane, 2-methyl-, polymer with oxirane, mono(2-ethylhexyl) ether
Chemical Name: 2-Ethylhexanol, ethoxylated, propoxylated
Chemical Class: Nonionic alcohol alkoxylate (branched C8, EO/PO)
Product Group: Alkoxylates / Alcohol alkoxylates; Surfactants
Product Line: Adjuvancies (BASF Agriculture)
Industry: Agriculture — Additives for crop protection
EPA Tolerance Exemption: 40 CFR 180.910 and 40 CFR 180.960 (inert ingredient in pesticide formulations)
WSDA Classification: Nonionic Surfactant, Spreader, Wetting Agent
Properties of Agnique KE 3551:
Physical state: Liquid (solidifies at approximately 7°C)
Appearance: Colorless to light yellow clear liquid
Odor: Slight characteristic odor
Solubility in water: Good (soluble; good solubility in water and short-chain alcohols)
Foam: Low foaming
HLB value: In the range typical for activating adjuvants (approximately 8–13)
Cloud point: Approximately 62–66°C (in butyl glycol/water solution, consistent with analogous products)
Solidification point: Approximately 7°C
Stability: Stable in acidic, neutral, and dilute alkaline environments; stable in hard water
Color (Hazen, 40°C): ≤100 (consistent with analogous branched C8 EO/PO alkoxylates)
Biodegradability: Readily biodegradable (consistent with OECD 301 for branched alcohol alkoxylates)
Ionic character: Nonionic
Specifications of Agnique KE 3551:
Product name: Agnique KE 3551 (Agnique® KE 3551)
Manufacturer: BASF SE (formerly Cognis)
CAS Number: 64366-70-7
Chemical type: Nonionic EO/PO alcohol alkoxylate based on 2-ethylhexanol (branched C8)
Product number: 30530396
Applications: Agricultural adjuvant — crop protection; nonionic surfactant, spreader, wetting agent
EPA tolerance exemption: 40 CFR 180.910 and 40 CFR 180.960
Physical form: Liquid
Storage: Cool, dry, well-ventilated area; protect from freezing and excessive heat
Consult BASF for full technical data sheet, specifications, and current SDS
Names of Agnique KE 3551:
Agnique KE 3551
Agnique® KE 3551
BASF Agnique KE 3551
2-Ethylhexanol ethoxylated propoxylated
Ethoxylated propoxylated 2-ethyl-1-hexanol
Branched C8 alcohol alkoxylate (EO/PO)
2-Ethyl hexanol EO-PO nonionic surfactant
Alcohol (2EH) alkoxylate
2-Ethyl hexanol EoPo copolymer
Oxirane 2-methyl- polymer with oxirane mono(2-ethylhexyl) ether
CAS 64366-70-7
