CAS 7299-99-2 | PEEH | High-Refractive & Water-Resistant Emollient for Cosmetics | Alfa Chemical
OPTICAL GLOSS
R.I. 1.446
High refractive index for shine
WATER RESISTANCE
LogP 6.7
Extreme lipophilicity
SENSORY TEXTURE
Zero Drag
Branched structure for smooth glide
STABILITY
Saturated Ester
Zero rancidity risk
⏱️ Response within 12 hours · For cosmetic and R&D use only.
📋 The PEEH Advantage: Molecular Mechanics
Pentaerythritol Tetra(2-ethylhexanoate) (CAS 7299-99-2) is a fully saturated, highly branched tetra-ester. Manufactured by Alfa Chemical in Zhengzhou, China, it is synthesized by reacting pentaerythritol with four molecules of 2-ethylhexanoic acid. This specific synthesis creates a compact, spherical molecule with unique formulatory benefits.
Why does PEEH outperform linear esters? The four branched alkyl chains prevent molecules from packing tightly together. This results in a remarkably low viscosity (~60 mPa·s) and exceptional spreadability, completely eliminating the heavy, sticky "drag" typical of high-molecular-weight oils. Furthermore, its high refractive index (1.446) optically enhances color and gloss, while its LogP of 6.7 creates a waterproof barrier on the skin.
✨ Key Features & Advantages
- Outstanding Gloss: With a high refractive index (1.446), PEEH significantly boosts the optical shine and color intensity of lipsticks and glosses.
- Water & Transfer Resistance: The extremely high LogP (6.7) ensures the oil resists wash-off and minimizes transfer onto glassware or masks.
- Superior Pigment Dispersion: The branched structure acts as a powerful wetting agent, wrapping around TiO2 and iron oxides to prevent agglomeration.
- Exceptional Stability: Being a fully saturated molecule (Iodine Value ≤ 1.0), it will not oxidize, turn rancid, or cause yellowing over time.
- Non-Tacky & Fast-Spreading: Provides a luxurious, silky skin feel that eliminates the sticky after-feel common with castor oil or heavy silicones.
🎯 Formulation Masterclass: Specific Applications
Explore how PEEH solves specific formulation bottlenecks.
Lipsticks & Lip Glosses
Challenge: Achieving glass-like shine without stickiness, syneresis (oil weeping), or color fading.
Solution: The R.I. of 1.446 maximizes optical gloss. Its saturated structure locks pigments in place and resists oxidation, ensuring the color stays true and the texture remains silky.
Waterproof Sunscreens
Challenge: UV filters feel greasy and wash off easily after swimming.
Solution: LogP 6.7 makes PEEH highly water-insoluble. It enhances water resistance (up to 80 mins) while effectively dispersing physical UV filters (ZnO/TiO2) to prevent a heavy, chalky cast.
Liquid Foundations
Challenge: Powders agglomerate, causing uneven coverage and a cakey finish.
Solution: The branched structure wraps around pigment particles, acting as an exceptional wetting agent. It improves grind efficiency and ensures a flawless, even, and non-drying glide.
Eyeshadows & Powders
Challenge: Binders can make pressed powders feel hard or cause hard-pan.
Solution: PEEH acts as a superior press binder. Its low viscosity provides excellent flow during the pressing process, yielding a creamy, highly-pigmented payoff without a dry feel.
Rich Night Creams
Challenge: Deep hydration usually requires heavy, occlusive oils that feel greasy.
Solution: PEEH creates a breathable, hydrophobic film (LogP 6.7) that minimizes Transepidermal Water Loss (TEWL) while offering a lightweight, non-greasy skin feel.
Cleansing Oils & Balms
Challenge: Cleansing oils need to dissolve heavy makeup and waterproof sunscreen quickly.
Solution: Due to its high lipophilicity, PEEH easily solubilizes silicone-based film formers and water-resistant sunscreens, turning into a milky emulsion upon rinsing without leaving an oily residue.
Academic & University Labs
Challenge: Academic research requires high-purity materials with exact batch-to-batch consistency for reproducible publications.
Solution: Ideal for studying polymer degradation, film formation, and sensory evaluation. We provide 100g samples with comprehensive GC Chromatograms to support your scientific research.
⚖️ PEEH vs. Traditional Emollients & Silicones
A technical comparison of performance metrics for formulators.
| Property / Metric | PEEH (CAS 7299-99-2) | D5 (Silicone) | Mineral Oil | IPM (Isopropyl Myristate) |
|---|---|---|---|---|
| Optical Gloss | High (R.I. 1.446) | Low | Medium | Low |
| Water Resistance | Excellent (LogP 6.7) | Medium | Excellent | Medium |
| Sensory Feel | Silky, Zero Drag | Dry, Fast Evap | Heavy, Greasy | Light, Silky |
| Oxidative Stability | Perfect (Saturated) | Perfect | Perfect | Poor (Rancid risk) |
| Regulatory Profile | Safe & Global | Restricted (EU) | Safe | Safe |
📊 Full Technical Specifications
Technical Insights: Why These Metrics Matter
Ultra-low Acid Value (≤ 0.1): Guarantees high chemical stability and prevents formulation degradation or rancidity.
High Refractive Index (1.446): Optically enhances the gloss and color vibrancy of your final cosmetic products.
Need the Full Technical Data?
📄 Request TDS / COA →📦 Packaging & Global Shipping
📦 Packaging Options
Available in 1kg aluminum bottles for lab use, 25kg HDPE drums, and 180kg painted metal drums for bulk production.
✈️ Shipping Methods
Global express courier for small samples; air freight or sea freight for bulk orders. We support FOB, CIF, and DDP terms.
⏱️ Delivery Time
3-7 business days after payment confirmation for ready stock. Custom packaging or bulk quantities may require additional lead time.
🏆 Why Source PEEH From Alfa Chemical
We are an integrated manufacturer, not a trading company. Based in Zhengzhou, China, Alfa Chemical controls the entire esterification and purification process. Our advanced vacuum distillation ensures ultra-low acid values and exceptional color (APHA < 30). We do not just sell ingredients; we provide supply chain stability and direct engineering support for your formulation team.
📦 Ready Stock & Bulk Scale
From 1kg lab samples to 180kg drums. Standard lead time is 3-7 days. Monthly capacity of 50 tons ensures we can support your mass production.
📄 Full Documentation
Batch-specific COA, SDS, and GC Chromatogram provided with every shipment. Full traceability and regulatory support for your global markets.
🔬 Formulation Expertise
We understand the synergy between emollients. We can advise you on how to pair PEEH with volatile carriers or film formers to achieve your target sensory profile.
💡 Formulator & Procurement FAQ
Q1. What is the MOQ and lead time?
Our standard bulk MOQ is 25kg (one HDPE drum). For ready stock, we typically ship within 3-7 business days after payment confirmation. For 180kg bulk orders or custom packaging, lead time may vary slightly.
Q2. Why does PEEH feel so light on the skin despite being a heavy ester?
PEEH has a highly branched molecular structure. This steric hindrance prevents the molecules from packing tightly together, resulting in a lower viscosity (~60 mPa·s) and excellent spreadability compared to linear esters of similar molecular weight.
Q3. How does PEEH improve water resistance in sunscreens?
With a LogP of 6.7, PEEH is extremely lipophilic and virtually insoluble in water (400 ng/L). It forms a hydrophobic film over the skin and the UV filters, strongly resisting wash-off during sweating or swimming.
Q4. Will PEEH oxidize and cause rancidity?
No. PEEH is a fully saturated molecule with no double bonds (Iodine Value ≤ 1.0). It is highly stable against oxidation and hydrolysis, ensuring your final product remains odor-free and does not yellow over time.
Q5. Do you support FOB, CIF, or DDP terms?
Yes. We routinely support FOB, CIF, and DDP terms. As a non-hazardous material, PEEH is shipped via air or sea freight with moisture-proof packaging to ensure it arrives in perfect condition.
Q6. Can I get a small sample for lab testing?
Absolutely. We provide 100g samples specifically for prototype development and compatibility testing. Batch-specific COA, SDS, and GC Chromatogram are provided to assist your research and formulation QA.
Ready to scale up or need a formulation partner?
Order a sample, download full documentation, or request a factory-direct quote today. We reply within 12 hours.
🧪 Formulation Synergies & Co-Solvents
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PEEH
CAS 7299-99-2
High-refractive, water-resistant emollient.
News & Articles
Need custom specifications or bulk supply?
Send your target COA or packaging requirements to our engineering team. We can customize purity and volumes to fit your exact formulation needs. We reply within 12 hours.
About Alfa Chemical: Based in Zhengzhou, China, Alfa Chemical is a leading manufacturer and supplier of fine chemicals, cosmetic ingredients, and specialty intermediates to research and industrial customers worldwide.
Disclaimer: For cosmetic and personal care use only. Not for food contact or pharmaceutical applications without specific regulatory compliance. All specifications are typical values and should be confirmed against the batch-specific Certificate of Analysis before use.
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