Defoamer DF-105

Product Details

CasNo： 68937-55-3

MF： C2H10OSi2

Appearance： liquid

Delivery Time： 15 days

Packing： 200kg/drum

Purity： 99%

I. Basic Information

• Product Name: Defoamer
• Brand Model: DF - 105
• Packaging Specification: 210 kg/barrel
• Main Ingredient: Polyether - siloxane non - ionic. It is a special non - ionic surfactant, prepared by chemically bonding or physically mixing polyether segments and polysiloxane segments, and has the characteristics of both polyether and organosilicon.

II. Product Properties

• Appearance: Usually a colorless to light yellow transparent or translucent liquid with uniform texture and good fluidity.
• Physical Properties: The density is generally 0.9 - 1.1 g/cm³, with appropriate viscosity that allows good dispersion in different application systems; it has a relatively high flash point, is non - flammable, and has relatively high safety during use and storage; the pH value is close to neutral, between 6 - 8, and has little impact on the pH of most application systems.

III. Action Principle

• Reduce Surface Tension: Polyether - siloxane non - ionic molecules can quickly migrate to the gas - liquid interface, significantly reducing the surface tension of the liquid. When foam is formed, the lower surface tension makes the foam film wall thinner and less stable, thus easily breaking.
• Destroy Elastic Foam Film: Defoamer molecules penetrate into the liquid film of the foam, destroying the elasticity and stability of the foam film. The unique molecular structure of polyether - siloxane non - ionic allows it to interfere with the orderly arrangement of surfactant molecules in the foam film, weakening the strength of the foam film and promoting the foam to break.
• Foam Suppression Effect: In the system, defoamer molecules can be continuously dispersed and adsorbed at positions where foam may be generated, forming a protective film that inhibits foam formation, preventing the aggregation of bubbles and the formation of stable foam.

IV. Performance Characteristics

• Wide Applicability: It can work in multiple fields such as biological fermentation, metal processing, food processing, and water treatment. In biological fermentation, it does not affect the growth and metabolism of microorganisms; in metal processing, it can effectively eliminate foam generated by cooling fluids and cutting fluids, improving processing quality; in food processing, it meets food safety standards and can eliminate foam during production; in water treatment, it adapts to different water quality conditions and effectively controls foam.
• Efficient Defoaming and Foam Suppression: It has a fast defoaming speed, which can quickly eliminate a large amount of generated foam, and at the same time has long - lasting foam suppression performance, reducing the number of defoamer additions and lowering the use cost.
• Good Chemical Stability: It has a certain tolerance to chemicals such as acids, alkalis, and salts, can maintain stable defoaming performance in different chemical environments, and is not easy to have chemical reactions with other substances in the system, ensuring the stability of the application process.
• Low Toxicity and Safety: In fields with high safety requirements such as food processing and biological fermentation, this defoamer is low - toxic or even non - toxic, meets relevant safety standards, and will not have adverse effects on human health and product quality.

V. Applicable Scenarios

• Biological Fermentation Field: In the fermentation production process of antibiotics, amino acids, enzyme preparations, etc., it effectively controls the foam generated by microbial metabolism and aeration stirring, maintains a good gas - liquid mass transfer environment in the fermentation tank, and improves fermentation efficiency and product yield.
• Metal Processing Field: It is used in cutting fluids, emulsions, rolling oils, etc., used in metal cutting, grinding, rolling and other processing processes. It eliminates foam generated by mechanical stirring and high - speed movement, ensures the smooth progress of the processing process, extends the service life of the processing fluid, and improves the surface quality of metal processing.
• Food Processing Field: In the production links of beverages, dairy products, baked food, brewing, etc., it eliminates foam generated by stirring, aeration, fermentation, etc., ensures the appearance quality and taste of the product, and at the same time meets the relevant standards for food additives.
• Water Treatment Field: In the treatment process of industrial circulating water, domestic sewage, and industrial wastewater, it controls the foam generated by aeration and chemical addition, ensures the normal operation of water treatment processes (such as activated sludge process, biofilm process, etc.), and improves the water treatment effect.

VI. Usage Methods and Precautions

• Usage Methods: It can be added directly or after dilution, with a general dilution ratio of 5 - 20 times. The addition amount depends on the specific application scenario and foam condition, generally between 0.01% - 0.1% (mass fraction). It is recommended to determine the optimal addition amount through small - scale tests. During addition, continuous dripping or intermittent addition can be adopted to ensure the continuity and stability of the defoaming effect.
• Precautions: It should be stored in a cool, dry, and ventilated warehouse, avoiding direct sunlight and high temperature. The recommended storage temperature is 5 - 35°C. After opening, it should be used as soon as possible. If stored for a long time, it is necessary to check whether the product has abnormal phenomena such as stratification and discoloration before use. Before mixing with other chemicals, it is recommended to conduct a small - scale test first to confirm its compatibility and avoid adverse reactions.