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Dow DOWSIL OFX-5329 Fluid is a polyether-modified silicone fluid in DOWSIL OFX series, designed for defoamer formulations and personal care products. With synergistic properties of polyether groups and siloxane backbone, it features excellent water dispersibility, surface activity and system compatibility, enhancing defoaming efficiency, emulsion stability and personal care product skin feel.
Excellent Water Dispersibility - Easily soluble in aqueous systems, suitable for water-based defoamer and personal care formulations
Outstanding Defoaming Efficiency - Rapidly breaks and inhibits foam, improving defoamer durability and stability
Smooth & Light Skin Feel - Non-greasy application, delivering soft and comfortable touch to skin and hair
Fast Spreading & Diffusion - Enhances product application uniformity, reducing residue
Wide System Compatibility - Suitable for water, oil and emulsified systems, easy to blend without delamination
Industrial Defoamers - Water-based coatings, papermaking, water treatment, enhancing defoaming, foam inhibition and emulsion stability
Skincare Products - Lotions, serums, creams, optimizing skin feel and improving spreading & absorption efficiency
Color Cosmetics - Foundations, primers, lipsticks, improving adherence and reducing caking
Hair Care Products - Shampoos, conditioners, hair oils, smoothing hair, reducing frizz and adding shine
Daily Chemical Cleaning - Laundry detergents, dish soaps, reducing surface tension, improving cleaning and foam control
| Brand | DOW |
| Product Type | Polyether-Functional Silicone Fluid |
| INCI Name | PEG-12 Dimethicone |
| Cyclotetrasiloxane Content | <1% (Typical Value) |
| Flash Point (Closed Cup) | 76.6℃ (Typical Value) |
| Kinematic Viscosity (25℃) | 360 cSt (Typical Value) |
| Specific Gravity (25℃) | 1.03 (Typical Value) |
| Shelf Life | 900 Days (Sealed and Cool Storage, Typical Value) |
| Appearance | Transparent Liquid (Typical Value) |
Q1: What is the primary function of DOWSIL OFX-5329 Silicone Oil in formulations?
A: DOWSIL OFX-5329 is a specialty silicone oil designed primarily as a surface modifier and processing aid to improve slip, leveling, and substrate wetting—especially in demanding coating, ink, and adhesive systems where low surface tension and compatibility with organic resins are critical.
Q2: Is DOWSIL OFX-5329 compatible with water-based and solvent-based systems?
A: Yes, DOWSIL OFX-5329 exhibits broad compatibility across both water-based emulsions and common organic solvent systems, including esters, glycol ethers, and aromatic hydrocarbons—making it suitable for hybrid and multi-chemistry formulations without phase separation under typical processing conditions.
Q3: How does DOWSIL OFX-5329 differ from standard dimethyl silicone oils?
A: Unlike conventional linear polydimethylsiloxanes, DOWSIL OFX-5329 features a tailored molecular architecture that provides enhanced anchoring to polar substrates and improved resistance to migration or blooming—delivering more persistent surface effects without compromising film integrity or intercoat adhesion.
Q4: What are recommended handling and storage conditions?
A: Store in original sealed containers at temperatures between 5 °C and 30 °C, away from direct sunlight and strong oxidizing agents. Ensure containers remain tightly closed when not in use to prevent moisture absorption or contamination, which may affect performance in sensitive applications.
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