Active: polydimethylsiloxane (PDMS)
- Formula
- PDMS-based emulsion, 30% active
- Mol. weight
- Polymer
- CAS
- 63148-62-9
Silicone Defoamer Emulsion 30% – ZEELCHEM DF-30
30% active PDMS silicone antifoam emulsion: breaks existing foam and prevents new foam at very low concentrations, even under heat, agitation, surfactants and pH swings.
- Dispatch in 1–2 daysFrom Vadodara, all India
- GST tax invoiceFull input credit
- Secure paymentUPI, card, net banking
- TDS, MSDS, COAWith every batch
What is Silicone Defoamer Emulsion 30%?
Silicone defoamer emulsion 30% is a concentrated PDMS antifoam that gives fast knockdown and long-lasting foam control at very low dosage. ZEELCHEM DF-30 is sold at ₹180/kg in 50 kg carboys.
| CAS number | 63148-62-9 |
|---|---|
| Formula | PDMS-based emulsion, 30% active |
| Molecular weight | Polymer |
| Product code | ZEELCHEM DF-30 |
| HSN code | 34029099 |
| Price | ₹180/kg, ₹9,000 per 50 kg carboy + GST |
| Made in | Vadodara, Gujarat, India |
About Silicone Defoamer Emulsion 30%
ZEELCHEM DF-30 penetrates the foam film, spreads over bubble walls, displaces foam-stabilising surfactants and lowers surface tension so bubbles collapse.
The higher active content means lower dosage and longer suppression than standard emulsions.
Key benefits
- Fast knockdown plus long-lasting suppression
- Very low dosage – cost-efficient
- Stable across temperature and acidic/alkaline pH
- Chemically inert, disperses easily in water
- Prevents overflow, pump cavitation and coating defects
Also known as: 30% silicone emulsion, silicone antifoam emulsion, DF-30
Technical specifications
| Product type | Silicone defoamer / antifoam emulsion |
|---|---|
| Active base | PDMS silicone compound |
| CAS (PDMS active) | 63148-62-9 |
| HSN code | 3402.90 (verify per formulation) |
| Active content | 30% typical |
| Appearance | Milky white to off-white emulsion |
| pH | 6.0–8.5 |
| Ionic nature | Non-ionic |
| Specific gravity | 0.95–1.05 |
| Surface tension | ~20–21 mN/m |
| Recommended dosage | 10–1000 ppm |
| Shelf life | 12–24 months |
| Grade | Technical grade, industrial use |
| Packaging | 50 kg HDPE carboy |
| Origin | Made in India |
Applications of Silicone Defoamer Emulsion 30%
- Wastewater treatment
- Textiles
- Chemical manufacturing
- Water-based paints and coatings (pinhole prevention)
- Detergents and cosmetics manufacturing
- Soap making
Dosage and how to use
- 10–1000 ppm depending on foam load.
- Pre-dilute with water for better dispersion if needed.
Dosing estimator
Estimate only. Confirm dosage with a water analysis and trial – our team can help.
Safety, storage and handling
- Industrial use only.
- Store cool and dry; protect from freezing and direct sunlight.
Industrial use only. Read the current safety data sheet before handling.
Documents
Batch COA is sent with every dispatch. Ask for any document on WhatsApp.
Frequently asked questions
What does silicone defoamer emulsion do?
It breaks existing foam and prevents new foam in liquid processes.
How much should I use?
10–1000 ppm depending on foam load.
Is it food grade?
This is a technical grade for industrial use. Ask us for food-processing grades.
Technical content reviewed by M.R. Patel, Technical Head. Last updated 26 October 2026.
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