PEG-8 TRISILOXANE- ▸ Agricultural adjuvant: Superspreading wetting and penetration aid for spray formulations
- ▸ Coatings: Wetting and flow/leveling additive
- ▸ Formulation surfactant: Nonionic surfactant and spreading aid
- ▸ Safety Data Sheet (SDS) PDF · SDS
- ▸ Technical Data Sheet (TDS) PDF · TDS
Values shown are typical for the current commercial grade. A lot-specific Certificate of Analysis accompanies every shipment; the grade-specific SDS is available on request.
A grade-specific Safety Data Sheet (SDS) — with the complete hazard classification, handling precautions, and transport information — is supplied with every shipment and available on request. Confirm all safety and regulatory details against the SDS for your specific grade.
Request SDS →Polyether-modified trisiloxane (CAS 27306-78-1) is a silicone-based nonionic surfactant. Its very low surface tension produces rapid wetting and spreading, and it is used as a superspreading spray adjuvant in agrochemical formulations and as a wetting and flow agent in coatings and other formulated products.
Regulatory & registration requirements
- TSCA (US):
- REACH (EU): Not determined from public registry
- EC number: 608-078-3
TSCA Inventory flag XU: a substance exempt from reporting under the Chemical Data Reporting Rule (40 CFR 711) (EPA flag legend).
Source: EPA TSCA Inventory (July 2025 release) · ECHA CHEM — retrieved 2026-07-12
Solutions Using This Product
Process-solution guides on this site that specify this chemistry:
- Spray Coverage on Waxy Leaves: Organosilicone Wetting Adjuvants (Agriculture)
- Amino Silicone Softeners for Soft, Durable Fabric Hand (Textiles)
- Pigment Dispersants & Processing Aids for Masterbatch (Plastics & Polymers)
Frequently Asked Questions
What is polyether-modified trisiloxane?
It is a silicone-based nonionic surfactant (CAS 27306-78-1) consisting of a trisiloxane backbone modified with polyether groups. Its very low surface tension produces rapid wetting and spreading, which is why it is widely used as a superspreader.
What is polyether-modified trisiloxane used for?
It is used as a superspreading spray adjuvant in agrochemical formulations to improve wetting and penetration, and as a wetting and flow/leveling agent in coatings and other formulated products. It functions as a general nonionic surfactant and spreading aid.
What is the use of trisiloxane surfactant in agriculture?
As a spray adjuvant, the trisiloxane surfactant dramatically lowers spray-solution surface tension to give superspreading coverage and faster wetting of leaf surfaces. This improves deposition and uptake of the active ingredients in the tank mix.
What products contain polysiloxane surfactants like this?
Polyether-modified trisiloxanes appear in agricultural adjuvants and tank-mix wetting aids, and in coatings as flow and leveling additives. They are also used as general spreading surfactants in various formulated industrial products.
How is this silicone surfactant supplied in bulk and what is the cost?
It is supplied as a liquid in bulk packaging such as drums, totes, and IBCs. Pricing is volume- and grade-dependent; request a bulk quote with your target quantity for current pricing, lead time, and SDS/CoA.
What is the REACH and TSCA regulatory status of Polyether-Modified Trisiloxane (Trisiloxane Surfactant)?
Polyether-Modified Trisiloxane (Trisiloxane Surfactant) (CAS 27306-78-1) is listed as Active on the U.S. EPA TSCA Inventory; its REACH registration status is not determined from the public ECHA registry.