3,5,5-Trimethylhexyl 3,5,5-Trimethylhexanoate
3,5,5-Trimethylhexyl 3,5,5-trimethylhexanoate (CAS 59219-71-5), commonly referred to as isononyl isononanoate, is a branched-chain ester with molecular formula C18H36O2 and molecular weight 284.48 g/mol.It is described as a clear, colorless to pale-yellow, low-viscosity liquid that is practically insoluble in water and lipophilic, with compatibility reported for oil and silicone phases.
Its principal reported commercial role is as an emollient and texture-modifying ester in personal-care formulations; sources also describe use in makeup products and specialty lubricant formulations. Its hydrophobic character is consistent with incorporation into oil-based systems, but specific performance and compatibility depend on the grade and formulation. Confirm the supplier’s identity, specifications, and intended-use documentation before assigning a particular function. Ingredient-use descriptions do not establish regulatory approval, safety for every application, or therapeutic benefit.
– Personal-care formulations: Reported as an emollient and skin-conditioning ingredient that contributes slip and a smooth, non-greasy feel. Consider it for oil-phase or emulsion development only when the supplied grade and applicable local cosmetic requirements support that use; this description is not a safety or approval claim.
– Makeup and color cosmetics: Supplier information lists use as a texture-enhancing and makeup formulation aid, including as a solvent or dispersing aid for compatible lipophilic components. Verify pigment wetting, phase behavior, and stability in the actual formula rather than assuming universal compatibility.
– Oil and silicone systems: Its low water solubility and lipophilic character make it a candidate ester component or carrier in suitable oil-rich blends. Silicone compatibility and clarity can depend on the particular silicone, temperature, and proportions, so check supplier data and test the target blend before relying on those properties.
Product Name: 3,5,5-Trimethylhexyl 3,5,5-Trimethylhexanoate
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