Foam Control — Process Challenge

Silicone (PDMS) Antifoam Emulsion for Spray Tanks

Spray operations and agrochemical manufacturers need a persistent antifoam that survives the whole batch or tank fill, not a transient alcohol knockdown. PDMS silicone emulsions spread a low-surface-tension film across foam lamellae and, with hydrophobic silica, rupture bubbles at very low dose
Why It Matters
Spray operations and agrochemical manufacturers need a persistent antifoam that survives the whole batch or tank fill, not a transient alcohol knockdown. PDMS silicone emulsions spread a low-surface-tension film across foam lamellae and, with hydrophobic silica, rupture bubbles at very low dose
Solution Approach

Spray operations and agrochemical manufacturers need a persistent antifoam that survives the whole batch or tank fill, not a transient alcohol knockdown. PDMS silicone emulsions spread a low-surface-tension film across foam lamellae and, with hydrophobic silica, rupture bubbles at very low dose RawSource supplies the base chemicals that go into these programs. We can help with product selection, grade matching, and sourcing from multiple origins for supply security.

Typical Application Workflow
1
Application & Agronomic Review
Define the use (crop input, adjuvant, soil amendment, post-harvest) and the agronomic, regulatory, and tank-mix requirements.
2
Input & Grade Selection
Match the surfactant or adjuvant, nutrient source, chelate, or formulation aid to the active, water quality, and label.
3
Compatibility & Rate Trial
Confirm tank-mix compatibility, dose, and stability, and size packaging (jugs, drums, totes, bulk) to the season and logistics.
4
Field Validation
Validate efficacy and crop safety in field trials, and lock the spec and supply plan for the season.
Recommended Chemistries (3)
Food-Grade Silicone Antifoam Emulsion (10-50% Active)
CAS 63148-62-9
Silicone Fluids & Oils
Antifoam
Polydimethylsiloxane emulsion spreads a low-surface-energy film that destabilizes foam lamellae for persistent knockdown at low dose
Full Details
Hydrophobic-silica / mineral- compound defoamer
Hydrophobic silica particles bridge and dewet the foam film; in a mineral-oil carrier they give robust antifoam where silicone is not wanted
Full Details
EO/PO Block Copolymer (Demulsifier / Defoamer)
CAS 9003-11-6
Glycols & Polyols
Cleaning / Degreasing
EO/PO copolymer gives fast transient foam knockdown on fill; listed to contrast its short persistence against the durable silicone emulsion
Full Details

Need help selecting the right chemistry?

Our team can help with grade selection, dosage guidance, and multi-origin sourcing.

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