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Ethylhexyl Isononanoate (CAS No: 59219-71-5) is a branched-chain synthetic ester of 2-ethylhexanol and isononanoic acid. It is prized by cosmetic chemists globally for its unique chemical architecture. The branched nature of both the alcohol portion (2-ethylhexyl) and the acid portion (isononanoate) prevents dense packing of the molecules, resulting in an exceptionally low melting point, low viscosity, and high volatility-like dry feel without actual evaporation. This spatial alignment renders it an outstanding replacement for volatile silicones such as cyclopentasiloxane (D5).
Unlike linear esters, the steric hindrance of the branched alkyl groups in Ethylhexyl Isononanoate confers high hydrolytic stability, making it resilient across a broad pH range of 3.5 to 8.5. This chemical stability is vital in active ingredient delivery vehicles, sun care formulations containing mineral oxides, and self-emulsifying color cosmetic dispersions.
| Parameters | Standard Specification Limits | Test Methods |
|---|---|---|
| Appearance | Clear, colorless liquid | Visual inspection | Odor | Characteristic mild, odorless | Organoleptic |
| Acid Value (mg KOH/g) | ≤ 0.1 | ASTM D974 |
| Saponification Value (mg KOH/g) | 190.0 - 210.0 | ASTM D5558 |
| Refractive Index (20°C) | 1.4320 - 1.4360 | Refractometric |
| Specific Gravity (25°C) | 0.850 - 0.865 | Pycnometry |
Why Tier-1 global cosmetic laboratories choose Suzhou Yuantairun Chemical Co., Ltd. for their large-scale ester supply chain needs.
Providing rich product portfolios including key emollient esters, amino acid surfactants, and bio-preservative complexes directly to global formulation facilities.
Equipped with advanced gas chromatography (GC) and mass spectrometry (MS) systems to customize carbon distribution and sensory profiles via OEM/ODM.
Leveraging continuous reaction technology, heat integration systems, and strategic logistics routes in Eastern China to ensure competitive cost efficiency.
Advanced enterprise resource planning (ERP) systems synchronized with warehouse hubs ensure high safety stock and timely intercontinental container logistics.
The global production of Ethylhexyl Isononanoate is highly concentrated around modern esterification hubs capable of managing complex feedstock logistics. Key precursors—isononanoic acid and 2-ethylhexanol—are subject to geopolitical shifts, crude oil derivatives pricing, and regional environmental audits. Isononanoic acid, which is synthesized via oxo synthesis, requires specialized chemical infrastructures. Because of this, it is crucial for cosmetic manufacturers to partner with a diversified supplier that has stable upstream contracts and localized warehouse capacity.
In response to volatile energy and raw material markets, Suzhou Yuantairun Chemical Co., Ltd. has established long-term off-take agreements for key chemical intermediates. By running automated esterification reactors that reduce energy use per ton, we can offset fluctuations in international raw material prices. This provides global customers with consistent wholesale price guarantees and reliable, high-volume capacity year-round.
Securing cross-border compliance is essential for cosmetic brands. As a globally trusted supplier, we maintain a robust certification program:
How Ethylhexyl Isononanoate functions across diverse industries, from mild personal care products to heavy-duty industrial degreasers.
Features Sodium Cocoyl Glutamate (YG02-95) and Sodium Lauroyl Sarcosinate (LS-100N) for ultra-mild cleansing, ideal for sensitive skin.
Ethylhexyl Isononanoate exhibits exceptional spreading velocity and acts as a solvent for organic UV filters (e.g. Avobenzone) and pigment dispersion.
Utilizes cationic surfactant 1631 70 (Cetrimonium Chloride) for enhanced fabric softness and anti-static properties.
Powered by LAS (Linear Alkylbenzene Sulfonate) and solvent EGDS (Glycol Distearate) for rapid breakdown of tough grease.
Uses SLES (Sodium Laureth Sulfate) and AOS (Sodium Alpha-Olefin Sulfonate) as core surfactants for superior cleaning and rich foam.
Combines amphoteric CAB-35 (Cocamidopropyl Betaine) and non-ionic APG1214 (Lauryl Glucoside) for rich, low-residue lather.
In modern cosmetic formulation science, the regulatory crackdown on volatile cyclic silicones, specifically D4, D5, and D6, has triggered an industry-wide pivot toward natural and safe synthetic alternatives. Cyclopentasiloxane (D5) has long been the gold standard for providing a silky, non-greasy skin feel with instant drying due to its quick evaporation rate. However, its bioaccumulative nature in aquatic systems has led to strict usage caps under European and North American environmental frameworks.
Ethylhexyl Isononanoate serves as one of the most effective replacements for cyclic silicones. While it does not physically evaporate at the same low temperatures as D5, its low surface tension (approx. 22-24 mN/m) and high spreading rate mimic the sensorial characteristics of volatile silicones. When applied to the skin, it spreads rapidly and creates a thin, dry barrier that prevents transepidermal water loss (TEWL) without leaving a heavy, sticky, or occlusive film.
Our engineering roadmap centers on transitioning from petroleum-derived precursors to 100% bio-based sources. By using enzymes to catalyze esterification instead of traditional high-temperature metal catalysts, we can lower energy inputs and significantly reduce waste. The resulting bio-based Ethylhexyl Isononanoate will maintain the identical performance profile of its synthetic predecessor while drastically cutting carbon emissions across its lifecycle.
We are also optimizing our feedstock supply chains. We seek out raw materials derived from non-food agricultural waste, aligning our operations with circular economy principles. This ensures that as global demand shifts toward green cosmetics, our clients can count on a secure supply of sustainable, high-performance ingredients.
Suzhou Yuantairun Chemical Co., Ltd. provides customized personal care formulation options alongside raw material shipments.
Tailored specifically to your target use cases: hotel supply lines, professional salons, or high-end consumer retail. Multi-functional formulations, diverse packaging configurations, and flexible price points available.
Fully customizable fragrance profiles, packaging formats, and enzyme combinations. Formulations optimized for high-efficiency cold-water cycles, eco-label compliance, or industrial-strength cleaning performance.
Formulated for high-traffic environments, commercial shopping malls, restaurant chains, and retail brands. Features skin-conditioning emollients that prevent dryness even with frequent washing.
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Addressing chemical compatibility, formulation constraints, stability thresholds, and logistics for cosmetic chemists and purchasing managers.
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An oil-resistant amino acid surfactant with excellent foaming properties. Specially developed for gentle, clarifying shampoos that maintain natural scalp health.
A light emollient ester known for its dry, skin-conditioning feel and pigment wetting capabilities, compatible with various oils in color cosmetics.
Contact Suzhou Yuantairun Chemical Co., Ltd. for pricing details, bulk samples, and customized formulation support.
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