Defoamers (Antifoaming Agents)
TL;DR This catalog product is a silicone-emulsion defoamer, with a white to light-yellow appearance, weak-anionic emulsion identity and published pH reference of 6.5–8.5. A silicone formulation is distinct from a polyether antifoam; emulsion form and process compatibility matter alongside concentration.
This catalog product is a silicone-emulsion defoamer, with a white to light-yellow appearance, weak-anionic emulsion identity and published pH reference of 6.5–8.5. A silicone formulation is distinct from a polyether antifoam; emulsion form and process compatibility matter alongside concentration. The catalog distinguishes QT-XPJ-102, a water-based product with 26 ± 1% solids, from QT-XPJ-101, a high-solids product listed at ≥99% with a neat continuous phase. Compare the same product-mass and solids basis; the two supplied forms are not automatically interchangeable.
Compare the application
Send the product or model, required specification, quantity, packaging and destination. Include the application and current product, if known. Confirm the available TDS, SDS, batch documents, storage conditions and commercial delivery terms for the actual offer.
Frequently asked questions
What does the catalog specify?
This catalog product is a silicone-emulsion defoamer, with a white to light-yellow appearance, weak-anionic emulsion identity and published pH reference of 6.5–8.5. A silicone formulation is distinct from a polyether antifoam; emulsion form and process compatibility matter alongside concentration. The catalog distinguishes QT-XPJ-102, a water-based product with 26 ± 1% solids, from QT-XPJ-101, a high-solids product listed at ≥99% with a neat continuous phase. Compare the same product-mass and solids basis; the two supplied forms are not automatically interchangeable.
What should the trial compare?
Identify stable surface foam versus entrained air, then reproduce the actual liquid, temperature, mixing and feed point. Compare foam suppression, recurrence, deposits, filtration and finished-product quality. The silicone family name does not establish harmlessness or an unlimited temperature or pH window.
What should I send for a quotation?
Send the product or model, required specification, quantity, packaging and destination. Include the application and current product, if known. Confirm the available TDS, SDS, batch documents, storage conditions and commercial delivery terms for the actual offer.
Compare the product family
Selection inputs
- Foam versus entrained-air symptoms
- Process water and temperature
- Addition point, residence time and shear
- Downstream filtration, coatings or product-quality needs
Documents and supply
Identify the proposed grade, required quantity, packaging and destination. Ask which specification, TDS, SDS and batch-document options apply to that offer.
Technical documents · Company certificate scopes
Request a quoteHow to narrow the right defoamer trial
Start with the process and the symptom. For paper-machine white water, ask whether the issue is visible surface foam or entrained air that affects sheet quality. For wastewater, distinguish stable biological foam from hydraulic or chemical foaming. Check mechanical air entry, new surfactants, recirculation and temperature before adding another product.
| Process | Measure first | Trial guardrail |
|---|---|---|
| Paper-machine wet end | Foam point, air in stock where measurable, drainage and sheet defects | Do not trade foam knockdown for deposits, sizing loss or poor formation. |
| Coating or size press | Bubbles in application mix, finish and runnability | Verify coating compatibility and surface quality. |
| Wastewater or biological process | Source, basin condition, treatment response and downstream limits | Do not assume a paper-machine trial transfers to wastewater. |
Compare the organic silicon and polyether product routes only after the candidate grade and site constraints are known. For a complete wet-end trial and feed-point decision, read our paper-machine foam guide. For a broad explanation of foam-control chemistry in wastewater, use the water-treatment overview. Bring process conditions, current additions and a measurable acceptance target to the inquiry; a supplier can then identify relevant product documents and a sample.
