Product Description of Sodium Cocoyl Isethionate CAS#61789-32-0
Sodium Cocoyl Isethionate , also known as SCI, is a mild anionic surfactant derived from natural coconut fatty acids. It commonly appears as white powder, needle-shaped particles or flakes, and is commercially available in multiple active-content grades including 65% and 85%. The 1% aqueous solution shows a pH range of 5.0-7.0, delivering rich, stable foam while remaining gentle to skin barriers.
It features good water solubility and favorable biodegradability, and maintains stable performance under weakly acidic-neutral environments, whereas strong alkaline or highly acidic surroundings may trigger hydrolysis.
Sodium Cocoyl Isethionate Chemical Properties
| Molecular formula | C₁₄H₂₇NaO₄S |
| Molecular weight | Approx. 314–344 g/mol |
| Density | Approx. 1.11 g/cm³ at 20 °C |
| Melting point | 150–160 °C |
| Form | Powder, granules, flakes or needle-like solid |
| Color | White to off-white |
| vapor pressure | 0.002Pa at 20℃ |
| pka | 0.36[at 20 ℃] |
| Water Solubility | 102mg/L at 23℃ |
| LogP | -0.41 at 20℃ |
| pH (1% aqueous solution) | 5.0–7.0, typically weakly acidic |
| Active matter | Commonly 65%, 75%, 85% or higher, depending on grade |
| EPA Substance Registry System | Fatty acids, coco, 2-sulfoethyl esters, sodium salts (61789-32-0) |
Product Application of Sodium Cocoyl Isethionate CAS#61789-32-0
Sodium Cocoyl Isethionate (SCI) serves as a core mild surfactant widely adopted in premium personal-care formulations. It is commonly incorporated into facial cleansers, body washes, bubble baths and solid cleansing bars, generating creamy, stable foam without stripping away the skin’s natural protective lipids. For hair-care goods including liquid shampoo and shampoo bars, it delivers gentle cleansing and improves combability.
It is also suitable for sensitive-skin and baby-care products owing to its low-irritation property. Manufacturers often blend it with other surfactants to optimize product mildness and foaming performance, catering to the growing market demand for plant-derived, skin-friendly daily-use cosmetics。
