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Defoamer
Substances that can reduce the surface tension of water, solutions, suspensions, etc., prevent the formation of foam, or reduce or eliminate the original foam.
The defoaming agent should have the following properties: (1) Strong defoaming power and low dosage; (2) Adding to the foaming system does not affect the basic properties of the system, that is, it does not react with the system being defoamed; (3) The surface tension is small; (4) It interacts with the surface Good balance; (5) Good heat resistance; (6) Good diffusion and permeability, high positive spreading coefficient; (7) Chemical stability, strong oxidation resistance; (8) Good gas solubility and permeability; (9) Foaming property The solubility in the solution is small; (10) has no physiological activity and is highly safe.
1. Basic features
(1) Composed of modified polydimethylsiloxane, Span 60, Tween 60, etc.;
(2) It has good foam breaking effect and good dispersion;
2. Product Data
Index | Physical and chemical properties | Test Methods |
Exterior | Milky white viscous liquid | Visual inspection |
Viscosity (25℃) | 500~3000mPa ·s | GB/T 5561- 1994 |
Dispersion | Suspended and dispersed in water | 1% aqueous solution |
PH | 5.0~8.0 | Precision pH test paper |
Solid content | ≥10% | Drying oven drying |
Lead(Pb)/(mg/kg) | ≤5 | GB/ 5009.12 |
Total arsenic (calculated as As)/ (mg/kg) | ≤2 | GB/T 5009.11 |
3. Product ingredient list
Project | Proportion |
Polydimethylsiloxane | 10%—25% |
Twain 60 | 2%-10% |
Span 60 | 1%-8% |
Sodium carboxymethyl cellulose | 0.5%—4% |
Sodium benzoate | 0.1%—0.2% |
4. Product preserve period
Defoaming agent can be stored at room temperature for 12 months
5. Application fields
(1) Suitable for desulfurization in power plants and wet phosphoric acid production;
(2) Industrial fermentation, industrial wastewater treatment;
(3) Food additives, protein, potato processing;
6. How to use
Defoaming agent can be added directly to the components, or can be used after dilution in a certain proportion. It can be added after the foam is generated or added to the product as a foam suppressing component. The optimal dosage is determined by the user through on-site testing;
7. Packaging and storage
This product is packaged in 25L plastic barrels or can be customized according to customer requirements. Please store at 5~35℃ and avoid direct heating. If it catches fire, extinguish the fire as usual for petroleum products.
At a temperature of 10~30℃, the shelf life is 12 months from the date of production if the package is unopened.
8. Product safety
This information is compiled based on our company's current knowledge and experience. The application or usage suggestions we provide are for your reference only. If you are not sure that it is safe to use, please contact the dealer or our company directly. Since the conditions and methods for using our products are different, it is recommended that customers do a small trial before use to ensure the safety and effectiveness of the product. If you need product standards, please contact our company, but typical product data should not be used as product standards. Our company guarantees that our products will comply with the product standards at that time. For losses caused by non-compliance with product standards, our company will be responsible for refunding the purchase price or replacing the product. Our company can provide chemical safety data sheets upon request.
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