Sodium Trideceth Phosphate (STS-65) is a mild anionic surfactant and emulsifier, specially developed for gentle personal care products. It features excellent mild cleansing, emulsifying, foam stabilizing, moisturizing and low-irritation properties. STS-65 can form soft and dense foam while gently cleaning hair and skin, reducing irritation to fragile scalp and skin, helping to maintain natural moisture balance and improve comfort. It has good compatibility with anionic, nonionic and amphoteric surfactants, stable performance in neutral and weak alkaline systems, and can significantly improve the mildness and foam quality of products. It is a safe and efficient mild surfactant and emulsifier widely used in baby care, sensitive skin care, facial cleanser, mild shampoo and shower gel products.
Chemical Type: Anionic surfactant, emulsifier, mild cleanser, foam stabilizer
Functions: Mild cleansing, emulsification, foam stabilization, moisturizing, low irritation, auxiliary solubilization
Applications: Shampoo, body wash, facial cleanser, foaming cleanser, sensitive skin care, baby care
Formulation Parameters
- Usage Rate: 1.0%–5.0%
- pH Compatibility: 5.0–8.5
- Compatibility: Compatible with anionic, nonionic and amphoteric surfactants; avoid high concentration of cationic surfactants
- Recommended Formulas: Mild facial cleanser, low irritation shampoo, baby care, mousse
Appearance, Odor, Solubility, Packing, Storage
- Appearance: Colorless to pale yellow clear liquid
- Odor: Slight characteristic odor
- Solubility: Soluble in water, suitable for transparent systems
- Packing: 25kg/50kg drum
- Storage: Sealed, cool and dry place, 5–35℃, shelf life 12 months







