At a glance
- CAS number
- 42131-25-9
- INCI name
- Isononyl Isononanoate
- Function
- emollient, skin conditioning, solvent
- Typical use level
- 1%–25%
- Solubility
- oil
CAS number and synonyms are sourced from PubChem. Function, usage levels, pH and compatibility are AI-assisted formulation guidance — verify against your supplier's technical data sheet and applicable regulations before use.
Also known as
ININ Isononyl Isononanoate Ester Isononanoic Acid Isononyl Ester C9 Ester
Compatibility
Works well with:
Cyclopentasiloxane Dimethicone Caprylic/Capric Triglyceride Cetyl Alcohol Jojoba Oil Squalane
Isononyl Isononanoate is broadly compatible with most oils, waxes, silicones, and oil-soluble actives. It is not water-soluble and requires appropriate emulsification when used in water-in-oil or oil-in-water systems. It shows excellent compatibility with silicone-based ingredients and can help improve spreadability in such blends.
Formulation notes
Isononyl Isononanoate is a branched-chain ester derived from isononanoic acid and isononyl alcohol, valued for its exceptionally light, dry skin feel and low viscosity. It spreads easily on the skin without greasiness, making it popular in lightweight moisturizers, sunscreens, color cosmetics, and skin-feel modifiers. It is considered non-comedogenic and well-tolerated, with good oxidative stability compared to unsaturated natural oils.
Frequently asked questions
What is Isononyl Isononanoate?
Isononyl Isononanoate is a emollient, skin conditioning, solvent used in cosmetic and personal-care formulation. Typical use level is 1%–25%. It is oil-soluble.
What is Isononyl Isononanoate used for?
Isononyl Isononanoate is used as emollient, skin conditioning, solvent in cosmetic and personal-care formulations.
What is the typical use level of Isononyl Isononanoate?
Isononyl Isononanoate is typically used at 1%–25% in the finished formulation. Always confirm against your supplier's technical data sheet.
What is the CAS number of Isononyl Isononanoate?
The CAS registry number for Isononyl Isononanoate is 42131-25-9. Its INCI name is Isononyl Isononanoate.
What ingredients are compatible with Isononyl Isononanoate?
Isononyl Isononanoate works well with Cyclopentasiloxane, Dimethicone, Caprylic/Capric Triglyceride, Cetyl Alcohol, Jojoba Oil, Squalane.
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