Organic Silicon Defoamer (Silicone Antifoam) — Manufacturer & Supplier
Organic silicon defoamer is a silicone-based antifoam — a white to light-yellow, weak-anionic emulsion of polysiloxane, modified polysiloxane and silicone resin with white carbon black — that rapidly knocks down and long-suppresses foam in water-based systems across papermaking, textiles, circuit-board cleaning, mining, agrochemicals and water treatment. It is dosed at just 10–1000 ppm and stays effective over a wide pH range.
- Type: silicone (polysiloxane) emulsion defoamer
- Appearance: white / light-yellow emulsion
- Ionic type: weak anionic · pH: 6.5–8.5
- Standard: GB/T 26527-2011
Specifications
| Type | Organic silicon (silicone) emulsion defoamer |
|---|---|
| Appearance | White or light-yellow emulsion |
| Composition | Polysiloxane, modified polysiloxane, silicone resin, white carbon black, dispersant & stabilizer |
| Emulsion ionic type | Weak anionic |
| pH | 6.5 – 8.5 |
| Dilution | Dilute with 10–30 °C water |
| Typical dosage | 10 – 1000 ppm (system dependent) |
| Executive standard | GB/T 26527-2011 |
Description
VCYCLETECH organic silicon defoamer is a high-performance silicone antifoam emulsion. The active polysiloxane spreads rapidly across the foam lamella, lowers local surface tension and ruptures the bubble film, giving fast foam knockdown (defoaming) and long-lasting foam suppression (antifoaming) at very low dosage. It disperses easily in water, is chemically stable and works over a wide temperature and pH range.
Performance & features
- Fast defoaming plus durable antifoaming at low dose (10–1000 ppm).
- Good dispersibility and stability in water-based systems.
- Effective over a wide pH and temperature range; low volatility.
- Chemically inert — does not affect the treated system or product.
Applications
- Papermaking — pulping, washing and white-water foam control.
- Textiles — dyeing, printing and finishing baths.
- Circuit-board (PCB) & metal cleaning.
- Mining & mineral processing.
- Agrochemicals, coatings, and industrial wastewater treatment.
Dosage & use
Typical dosage is 10–1000 ppm depending on the foam load; dilute with 10–30 °C water and add continuously or in shots at the foaming point. Run a small bench trial to set the optimum dose for your system — our engineers can advise.
Packaging, storage & lead time
- Packing: 25 kg & 200 kg drums, 1000 kg IBC tote (other packing on request).
- Store sealed in a cool, dry, ventilated place at 10–30 °C, protect from freezing. Shelf life: 6 months.
- MOQ and lead time on request; in-stock items typically ship in 5–7 days, a 20′ FCL in ~15 days.
Why choose VCYCLETECH
Factory-direct defoamer manufacturer in China — ISO 9001 / 14001 / 45001 certified, a Certificate of Analysis (COA) with every batch, OEM / ODM and private-label packaging, and worldwide shipping. See our quality & certifications.
Frequently asked questions
What is organic silicon defoamer?
Organic silicon defoamer is a silicone-based antifoam: a weak-anionic emulsion of polysiloxane, modified polysiloxane and silicone resin with white carbon black. It rapidly breaks foam and then suppresses its return in water-based industrial systems such as papermaking, textiles, cleaning and water treatment.
How does a silicone defoamer work?
The insoluble silicone droplets spread onto the foam film, displace the foam-stabilizing surfactants and lower local surface tension, which thins and ruptures the bubble walls. This gives both fast defoaming (knockdown) and lasting antifoaming (suppression) at very low dosage.
What is the dosage of organic silicon defoamer?
Typical dosage is 10–1000 ppm depending on the foam load and system. Dilute with 10–30 °C water and add at the foaming point, continuously or in shots. A short bench trial sets the optimum dose; VCYCLETECH can advise for your process.
What industries use silicone defoamer?
It is used in papermaking (pulp, washing, white water), textile dyeing and printing, circuit-board and metal cleaning, mining and mineral processing, agrochemicals, coatings and industrial wastewater treatment.
Is VCYCLETECH an organic silicon defoamer manufacturer?
Yes. VCYCLETECH manufactures organic silicon (silicone) defoamer factory-direct in China to GB/T 26527-2011, ISO 9001/14001/45001 certified, with a COA on every batch, free samples and OEM/ODM service. Email sales@vcycletech.com for a quotation.
Standard & references
This organic silicon defoamer is produced to the Chinese national standard GB/T 26527-2011 for organosilicon defoamers. Learn more about foam control in our guides: defoamers in water treatment and everything you need to know about defoamers.
Related: Polyether Defoamer · All defoamers · Water Decoloring Agent · PAM