Octyltriethoxysilane, Silane Film-forming Agent(CAS 2943-75-1)
Product Name: n-Octyltriethoxysilane
INCI Name: n-Octyltriethoxysilane
CAS No.: 2943-75-1
Grade: Cosmetic Premium Grade (High-purity Film-forming & Waterproof Special Grade)
Appearance: Colorless Transparent Low-viscosity Liquid, Pure Texture, No Impurities, No Peculiar Smell, Excellent Fluidity
MOQ (Minimum Order Quantity): 25KG
Solubility: Insoluble in water, fully miscible with silicone oil, synthetic esters, cosmetic greases and all oil-phase systems; excellent formula compatibility, stable compounding without stratification or precipitation; low-temperature resistant and high-temperature stable, wide adaptability to cosmetic oil-phase formulas, fully suitable for industrial mass production
Storage Condition: Sealed and stored in dry, cool and ventilated warehouse, away from high temperature, open fire, static electricity and humid environment; avoid long-term strong light exposure; keep tightly sealed after opening to prevent moisture-induced hydrolysis and component failure
Shelf Life: 24 Months
Application: Widely used in waterproof long-lasting foundation, matte makeup primer, eyeliner, mascara, lip gloss, sunscreen, outdoor waterproof skincare products and long-wear anti-smudge cosmetic formula systems
n-Octyltriethoxysilane, Octyltriethoxysilane, Silane Film-forming Agent, Waterproof Anti-fouling Raw Material, Low Surface Tension Additive, Long-lasting Makeup Fixing Agent, Cosmetic Hydrophobic Modifier
Octyltriethoxysilane, Silane Film-forming Agent(CAS 2943-75-1)
Cosmetic Grade n-Octyltriethoxysilane is a high-purity organosilicon hydrophobic film-forming functional raw material. It adopts precise organic synthesis technology to stabilize octyl lipophilic hydrophobic structure and triethoxysilane active functional groups, with excellent surface modification and breathable film-forming performance.
The product has ultra-low surface tension and good leveling performance, which can form a uniform, soft, dense and highly breathable waterproof protective film on the skin surface.
The film layer has strong water resistance and anti-fouling ability, which can effectively isolate sweat, sebum and external dust, maintain the integrity of makeup, and solve the pain points of easy smudging, floating and fading of long-wear makeup.
Different from rigid film-forming agents, it has excellent air permeability without stuffy skin and tightness, and will not affect the skin's normal breathing. With stable chemical properties, no oxidation and no yellowing, it can significantly improve the long-term wear resistance and weather resistance of cosmetic finished products, and is a core upgraded raw material for high-end waterproof and long-wear makeup formulas.
Key Benefits
• Breathable Waterproof Film-forming, No Stuffy Skin: Form soft and dense breathable hydrophobic film, effective water and sweat isolation, no rigid film tightness, balance waterproof performance and skin-friendly feeling.
• Super Anti-smudge & Long Lasting Makeup: Strong anti-fouling and anti-sebum ability, prevent makeup melting and smudging caused by sweat and oil, keep makeup clean and intact for a long time.
• Ultra-low Surface Tension, Excellent Leveling: Perfectly optimize product ductility and spreadability, makeup fits closely without floating powder, improve makeup fineness and smooth texture.
• Stable Performance, No Yellowing & No Cracking: Excellent weather resistance and oxidation resistance, long-term storage and wear without yellowing, film layer no cracking or peeling, stable finished product quality.
• Oil-phase Universal Compatibility: Fully miscible with various cosmetic oils, esters and silicone systems, stable compounding, no system conflict, easy formula debugging.
• Mild & Zero Skin Burden: Purified formula without irritant impurities, no residue accumulation on skin, mild and safe, suitable for long-term cosmetic addition.
Applications
• Waterproof Long-wear Foundation Series: Core film-forming waterproof raw material for matte long-lasting foundation, concealer and makeup primer, improve oil control and waterproof lasting effect.
• Eye & Lip Waterproof Makeup: Widely used in eyeliner, mascara, liquid eyeshadow and matte lip gloss, enhance anti-smudge, anti-fading and waterproof performance.
• Waterproof Sunscreen Products: Added in outdoor waterproof sunscreen lotion and cream, form breathable protective film, improve sunscreen water resistance and outdoor durability.
• Long-wear Cream Makeup: Suitable for cream blush, contour cream and setting cream, optimize cream texture, prevent makeup floating and fading, and improve makeup adhesion.
• Anti-fouling Skincare Products: Applied in outdoor protective lotion and anti-dust skincare products, form hydrophobic protective layer to isolate external pollution and sweat erosion.
• High-end Custom Long-wear Formula: Preferred functional additive for high-standard waterproof and long-wear cosmetic customization, upgrade product competitiveness and user experience.
Certificate Of Analysis (COA)
Test Item | Standard Specification | Test Result |
Product Name | n-Octyltriethoxysilane | Compliant |
Appearance | Colorless Transparent Low-viscosity Liquid | Compliant |
Odor | Slight Characteristic Odor, No Peculiar Smell | Qualified |
Purity | ≥98.0% | 98.6% |
Refractive Index (25℃) | 1.400~1.420 | 1.412 |
Relative Density (25℃) | 0.850~0.880 | 0.865 |
Moisture Content | ≤0.1% | 0.06% |
Heavy Metal (Pb) | ≤1ppm | 0.2ppm |
Arsenic (As) | ≤0.5ppm | 0.1ppm |
Total Bacteria | ≤100CFU/g | Qualified |
Pathogenic Bacteria | Negative | Negative |
Conclusion | Conforms to cosmetic grade quality standard | Qualified |
Frequently Asked Questions (FAQ)
• Q1: What is the MOQ of n-Octyltriethoxysilane?
A1: The standard MOQ is 25KG, and sample orders are supported for formula testing and efficacy trial production.
• Q2: What certification documents can be provided?
A2: Complete COA, MSDS, heavy metal and microbial test reports and full set of customs clearance documents are available to support export declaration and cosmetic product filing.
• Q3: What is the recommended dosage in cosmetic formulas?
A3: Waterproof foundation & primer: 2%–8%; Eye & lip makeup: 3%–10%; Waterproof sunscreen: 1%–5%; Cream makeup: 2%–6%, adjustable according to product waterproof and long-wear requirements.
• Q4: What is the difference between this product and ordinary film-forming agents?
A4: Ordinary film-forming agents are easy to form rigid film with tight and stuffy feeling, easy to crack and peel; n-Octyltriethoxysilane forms soft and breathable film, with better waterproof and anti-fouling performance, no yellowing, no film damage after long-term wear, and higher comprehensive cost performance.
• Q5: Will it affect the transparency and texture of finished products?
A5: No. The product has high purity and good compatibility, which will not cause turbidity, precipitation or texture change. It can optimize makeup smoothness without affecting the original color and transparency of finished products.
• Q6: What are the storage and formula matching notes?
A6: This product is easy to hydrolyze when encountering water, avoid long-term humid environment; it is suitable for oil-phase formula addition, avoid high-dose compounding with water-phase raw materials directly, and pay attention to waterproof and moisture-proof during production.
• Q7: Do you support stable large-batch supply all year round?
A7: Standardized synthesis and purification production lines ensure stable batch quality and consistent performance, sufficient inventory, supporting long-term cooperative orders and customized formula matching services.
Contact Us
💌 Contact us today for technical data, formulation guidance, and competitive pricing! E-mail:
You Might Also Like
1.ur Products A full range of high-quality cosmetic raw materials, including plant extracts, natural active ingredients, skin care actives and formulation additives. Stable supply & strict quality control.
