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LA-11 Agricultural Silicone Penetrant Polyether-Modified Trisiloxane Agricultural Surfactant

Name: LA-11 Agricultural Silicone Penetrant Polyether-Modified Trisiloxane Agricultural Surfactant
Brand: Nanjing Silfluo New Material Co., Ltd.
Availability: InStock

Silfluo LA-11 is a 100% active nonionic polyether-modified trisiloxane surfactant (CAS 27306-78-1) based on a methoxy-terminated polyalkyleneoxide-modified heptamethyltrisiloxane structure, for use as an agricultural spray adjuvant.

At 0.1 wt% aqueous concentration, LA-11 reduces surface tension to below 21.0 mN/m. Conventional hydrocarbon surfactants typically reduce surface tension to 28–32 mN/m at equivalent concentration; the trisiloxane structure achieves values below 21 mN/m, the threshold required for stomatal infiltration on hydrophobic leaf surfaces.

Compared to hydroxyl-terminated trisiloxane ethoxylates (e.g., LA-10), the methoxy/methyl-capped polyether end group of LA-11 produces a lower foam profile under tank agitation conditions, reducing foam-related interruptions during spray preparation.

Performance is equivalent to Momentive Silwet L-77.

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Typical Technical Properties of LA-11 Agricultural Silicone Penetrant Polyether-Modified Trisiloxane Agricultural Surfactant

Silfluo Code:	LA-11
Chemical Name: Synonyms:	Polyether-Modified Trisiloxane Trisiloxane Ethoxylate (TSE), Superspreading Surfactant, Agricultural Silicone Adjuvant; Methoxy-terminated /Methyl-capped polyether-modified trisiloxane
Chemical Name: Synonyms:
Main Content:	Polyalkyleneoxide Modified Heptamethyltrisiloxane
CAS NO.:	27306-78-1
Appearance:	Clear, colorless to pale yellow liquid
Active Content (%):	100
Viscosity (25°C, mPa·s):	10 - 30
Refractive Index (at 25°C):	1.440 - 1.450
Surface Tension (0.1% aq., 25°C, mN/m):	< 21.0 mN/m
Cloud Point (1.0 wt% aq., °C):	< 10
Ionic Nature:	Nonionic
Chemical Structure:	PE: Polyether

Mechanism of Action of LA-11 Agricultural Silicone Penetrant Polyether-Modified Trisiloxane Agricultural Surfactant

Unlike standard carbon-based surfactants, the highly flexible siloxane backbone of Silfluo LA-11 triggers an immediate collapse of spray droplet surface tension. This results in extreme spreading behavior and facilitates the physical transport of active ingredients directly into plant stomata. This "stomatal flooding" guarantees rapid internal absorption, providing exceptional rainfastness and systemic delivery even under challenging weather conditions.

Tank-mix Application Guidelines of LA-11 Agricultural Silicone Penetrant Polyether-Modified Trisiloxane Agricultural Surfactant

Silfluo LA-11 operates efficiently at extremely low dosage rates, typically between 0.025% and 0.1% (e.g., 5g per 20kg of spray solution).

Recommended Use Rates of LA-11 Agricultural Silicone Penetrant Polyether-Modified Trisiloxane Agricultural Surfactant

Plant Growth Regulators: 0.025% - 0.05%
Herbicides: 0.025% - 0.15%
Insecticides: 0.025% - 0.1%
Fungicides: 0.015% - 0.05%
Fertilizers and Trace Elements: 0.015% - 0.1%

Preparation Protocol of LA-11 Agricultural Silicone Penetrant Polyether-Modified Trisiloxane Agricultural Surfactant

Fill the mixing tank to 80% capacity with water.
Introduce and thoroughly dissolve the required agrochemicals.
Incorporate the precise dosage of Silfluo LA-11.
Top off with the remaining water and agitate gently to minimize any potential foam generation.

Operational Optimization of LA-11 Agricultural Silicone Penetrant Polyether-Modified Trisiloxane Agricultural Surfactant

Spray Volume Reduction: Integrating Silfluo LA-11 empowers operators to safely cut total spray water volumes by 30% to 50%, while reducing active pesticide usage by 20% to 30% due to enhanced bioavailability.
Equipment Setup: Employ fine-droplet, small-aperture nozzles to maximize the stomatal penetration effect.
pH Stability Window: Optimal stability is achieved when the tank mix pH is maintained strictly between 6.0 and 8.0. Spray solutions must be utilized within 24 hours of preparation to prevent siloxane bond degradation.

IN-CAN FORMULATION CRITERIA of LA-11 Agricultural Silicone Penetrant Polyether-Modified Trisiloxane Agricultural Surfactant

When utilized as an inbuilt formulation additive, Silfluo LA-11 requires rigorous pH buffering (strictly between pH 6.5 and 7.5) to prevent hydrolysis. Formulators are advised to use concentrations ranging from 0.5% to 8.0% by weight depending on the matrix. Accelerated thermal aging and compatibility tests are mandatory to verify long-term phase stability prior to commercial release.

Package &Storage of LA-11 Agricultural Silicone Penetrant Polyether-Modified Trisiloxane Agricultural Surfactant

In 20Kg, 200Kg Plastic barrel or 1000kg, or up to clients request.
Keep in cool, dry and ventilated place. Keep away from sunlight and fire sources. Keep in unopened containers, shelf life is 24 months from the date of production. It is shipped as non-hazardous substance.
Storage beyond the shelf life does not necessarily mean that the product is no longer usable. In this case however, the properties required for the intended use must be checked for quality assurance reasons.

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