- ▸ Aqueous foam control: Suppresses and breaks foam in water-based process systems.
- ▸ Petroleum processing: Foam control in oil and gas processing streams.
- ▸ Detergents & cleaning: Foam control in detergent and cleaning formulations.
- ▸ Pre-emulsified form: Water-dilutable for direct dosing into aqueous systems.
- ▸ 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 →Cross-reference: comparable in class to XIAMETER AFE-0700 Antifoam Emulsion (a Dow product): both are water-carried polydimethylsiloxane/silica antifoam emulsions in the same actives band (this grade typical 9–13% active; AFE-0700 published at 10% active). RawSource is independent of Dow; qualify dosing in your own foaming system against the RawSource TDS.
Silicone Antifoam Emulsion is a water-based dispersion of polydimethylsiloxane (silicone fluid) supplied for foam control. Silicone antifoams of this type are used to suppress foam in aqueous systems, in petroleum processing, and in detergent and cleaning applications.
Typical Specifications
Typical properties of the supplied grade (product code RS-AF 615). These are typical production values, not a sales specification — the lot-specific Certificate of Analysis governs each shipment, and the product is supplied for industrial use.
Emulsion vs. compound. This grade is supplied as an emulsion — the silicone active is pre-dispersed in water, so it dilutes and meters straight into aqueous systems at ppm levels. A neat silicone compound (effectively 100% active, no water) is used where water cannot be introduced or in non-aqueous media. For most water-based process, wastewater, petroleum, and cleaning duties, the emulsion is the practical form.
Packaging & Bulk Supply
Supplied in the formats below, quoted per order. Full SDS is available on request, and a lot-specific Certificate of Analysis ships with every order.
Starting-Dose Guide
Starting points only — dose to the minimum that holds foam on your actual stream, since full-scale shear and feed dynamics differ from bench tests. Figures are for the product as supplied.
Comparable Products
RawSource Silicone Antifoam Emulsion is a general-purpose silicone (PDMS) emulsion defoamer for aqueous systems. It is comparable in function to silicone antifoam and defoamer emulsion grades such as Wacker Silfoam and Momentive SAG, and to general process antifoams such as Antifoam 204. Select by active content, dilutability, and your system’s foam type rather than by brand name, and request a sample for side-by-side trial dosing. For help choosing a grade, see our silicone defoamer selection guide and the complete guide to defoamers.
Brand and product names are the property of their respective owners and are referenced only to describe comparable function. RawSource is not affiliated with, endorsed by, or sponsored by these companies.
Solutions Using This Product
Process-solution guides on this site that specify this chemistry:
- Defoamers for Cooling Towers & Process Water (Water Treatment)
- Food-Grade Antifoam & Defoamers for Boil-Over and Foam in Fermentation & Filling (Food & Beverage)
- Silicone (PDMS) Antifoam Emulsion for Spray Tanks (Agriculture)
Frequently Asked Questions
What is silicone antifoam emulsion?
Silicone antifoam emulsion is a water-based dispersion of polydimethylsiloxane (silicone fluid) supplied for foam control. The pre-emulsified form is water-dilutable for direct dosing into aqueous systems.
What is silicone antifoam used for?
It is used to suppress and break foam in water-based process systems, for foam control in petroleum and oil/gas processing streams, and in detergent and cleaning formulations. The emulsion form allows dosing directly into aqueous lines.
What is silicone antifoam made of?
It is a dispersion of polydimethylsiloxane (PDMS silicone fluid) in water, typically with emulsifiers to maintain a stable, water-dilutable emulsion. Exact composition varies by product; consult the SDS for the specific supplied grade.
How is silicone antifoam emulsion dosed?
Because it is pre-emulsified, it can be diluted in water and dosed directly into aqueous systems at the foam-prone point. Dosage depends on the system and foam load, so confirm an appropriate rate against your process and the product technical data sheet.
Can silicone antifoam emulsion be supplied in bulk?
Yes. RawSource supplies silicone antifoam emulsion in drum, tote, and IBC quantities for process, petroleum, and detergent applications. Request a bulk quote with your volume; CoA and SDS are available on request.