At a glance
- CAS number
- 61789-32-0
- INCI name
- Sodium Cocoyl Isethionate
- Function
- surfactant, cleansing, foaming agent, conditioning
- Typical use level
- 10%–50%
- Solubility
- water
- Stable pH
- 4.5–7
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
SCI Baby Foam Coconut Fatty Acid Ester of Sodium Isethionate Cocoyl Isethionate
Compatibility
Works well with:
Cocamidopropyl Betaine Sodium Lauryl Sulfoacetate Glycerin Stearic Acid Cetyl Alcohol Sodium Lauroyl Glutamate
Use caution with:
High concentrations of cationic surfactants Strong acids Strong alkalis
SCI is mildly anionic and generally tolerates other anionics and amphoterics well; it pairs especially well with Cocamidopropyl Betaine to boost foam volume and mildness. Avoid highly alkaline conditions (pH above ~8) as hydrolysis of the ester bond can occur over time, reducing efficacy and shelf life. Cationic surfactants at high levels can form insoluble complexes and should be used with caution.
Formulation notes
Sodium Cocoyl Isethionate is a mild, skin-friendly anionic surfactant derived from coconut fatty acids and isethionic acid, prized for its exceptionally soft, creamy lather and low irritation profile relative to sulfate-based surfactants. It is a workhorse in solid syndet bars, cleansing bars, and powder cleansers, where it functions as the primary cleansing and lather agent while imparting a smooth, non-stripping skin feel. The ingredient is commonly supplied as a white waxy solid or flake and typically requires heat (above ~70 °C) or appropriate processing aids to incorporate into formulas.
Frequently asked questions
What is Sodium Cocoyl Isethionate?
Sodium Cocoyl Isethionate is a surfactant, cleansing, foaming agent, conditioning used in cosmetic and personal-care formulation. Typical use level is 10%–50%. It is water-soluble. Stable in the pH 4.5–7 range.
What is Sodium Cocoyl Isethionate used for?
Sodium Cocoyl Isethionate is used as surfactant, cleansing, foaming agent, conditioning in cosmetic and personal-care formulations.
What is the typical use level of Sodium Cocoyl Isethionate?
Sodium Cocoyl Isethionate is typically used at 10%–50% in the finished formulation. Always confirm against your supplier's technical data sheet.
What is the CAS number of Sodium Cocoyl Isethionate?
The CAS registry number for Sodium Cocoyl Isethionate is 61789-32-0. Its INCI name is Sodium Cocoyl Isethionate.
At what pH is Sodium Cocoyl Isethionate stable?
Sodium Cocoyl Isethionate is generally stable in the pH 4.5–7 range.
What ingredients are compatible with Sodium Cocoyl Isethionate?
Sodium Cocoyl Isethionate works well with Cocamidopropyl Betaine, Sodium Lauryl Sulfoacetate, Glycerin, Stearic Acid, Cetyl Alcohol, Sodium Lauroyl Glutamate. Use caution when combining it with High concentrations of cationic surfactants, Strong acids, Strong alkalis.
Related ingredients
- Sodium Lauroyl SarcosinateSurfactant
- Coco-GlucosideSurfactant
- Lauryl GlucosideSurfactant
- Sodium Lauryl SulfateSurfactant
- Sodium Cocoyl GlutamateSurfactant
- Sodium Laureth SulfateSurfactant