Defoamer FAG470 (also known as FAG-470, Silicone Defoamer FAG470, Defoamer FAG470) is a professional-grade defoaming product developed by Guoli Chemical based on polyether-modified polysiloxane technology. Its molecular structure is modified with polyether chains to make polysiloxane hydrophilic, presenting it in the form of an aqueous emulsion. It disperses instantly upon contact with water, rapidly spreads in foaming systems, and disrupts the stability of foam liquid film, achieving dual functions of rapid defoaming and long-lasting foam suppression. This product is non-ionic and exhibits good compatibility with various anionic, cationic, and other non-ionic additives in the system, making it an ideal choice for foam control in industrial processes.
Defoamer FAG470 is supplied as a milky white liquid. Its core advantage lies in maintaining chemical structural stability under harsh conditions such as high temperature and strong alkali, without easy demulsification or failure. This characteristic makes it particularly outstanding in high-temperature alkaline baths of textile printing and dyeing, circulating systems in industrial cleaning, and high-temperature and high-pressure processes in petrochemical applications. Meanwhile, the product is classified as a non-hazardous chemical according to GHS classification standards. It is non-flammable, free from explosion risk, non-irritating to skin and eyes, and safe for use.
| Parameter Item | Specification/Description |
|---|---|
| Product Name | Defoamer FAG470 |
| Chemical Type | Polyether-modified Polysiloxane |
| Ionic Type | Non-ionic |
| Appearance | Milky white liquid |
| Active Content (%) | 20.0~30.0 |
| Solid Content (%) | 20.0~30.0 |
| pH Value (1% Aqueous Solution) | 5.0~8.0 |
| Density (g/cm³) | 0.85~1.05 |
| Acid Value (mgKOH/g) | ≤1.0 |
| Moisture Content (%) | ≤1.0 |
| Water Dispersibility | Easily dispersible in water |
| Defoaming and Foam Inhibition Performance | High-efficiency defoaming, long-lasting foam suppression |
| Alkali Resistance | Good |
| Heavy Metal Content (ppm) | ≤10 |
| Arsenic Content (ppm) | ≤2 |
| Chemical Stability | Stable under normal conditions |
| CAS Number | Not available for this parameter |
| HLB Value | No specific value (HLB value is generally not applicable for defoamers) |
| Packaging Specifications | 25kg plastic drum, 50kg plastic drum, 200L plastic drum |
Defoamer FAG470 is widely applicable across various industries. It is recommended to flexibly adjust the addition method and dosage according to different application scenarios:
Water Treatment Field: Suitable for aeration tanks, sedimentation tanks, and concentration tanks in municipal sewage and industrial wastewater treatment systems. It is recommended to continuously add via a metering pump to the foam-generating area, effectively breaking biological foam and surfactant foam, ensuring process stability and effluent quality.
Textile Printing and Dyeing Processing: Used in high-temperature alkaline baths such as desizing, scouring, bleaching, dyeing, and printing. Leveraging its excellent resistance to high temperature and strong alkali, it eliminates large amounts of foam generated by additives and mechanical shear, preventing color unevenness issues in fabrics.
Coatings and Ink Manufacturing: In processes such as high-speed dispersion, grinding, and filling, it is recommended to add together with other additives or in stages to inhibit micro-foam and large bubbles, preventing film defects such as pinholes and shrinkage cavities.
Industrial Cleaning and Metalworking Fluids: In high-pressure spraying, CIP cleaning, and cutting fluid circulating systems, it can be added after dilution to maintain foam control capability. Small-scale testing is recommended before use to determine the optimal dosage. The specific dosage should be determined through small tests based on actual conditions and foam severity. Slight stirring to homogenize the product before use is recommended.