Potassium Cetyl Phosphate – Anionic O/W Emulsifier for Sun Care & Sensitive Skin
Potassium Cetyl Phosphate (CAS 19035-79-1): an EO-free anionic O/W emulsifier for mild, stable, silky sun-care, facial and baby-care emulsions.
Product Information
Potassium Cetyl Phosphate Overview
Potassium Cetyl Phosphate is an anionic oil-in-water emulsifier that forms a lamellar liquid crystal structure and can emulsify a high oil load at low use levels. It is popular for sun-care emulsions, sensitive-skin creams and baby care, and tolerates ethanol and electrolytes.
Key Benefits
- ✔ EO-free anionic emulsifier
- ✔ High oil-phase emulsifying capacity
- ✔ Compatible with ethanol and electrolytes
- ✔ Mild skin feel, suitable for SPF emulsions
Applications
- Sunscreen lotions
- Sensitive-skin and baby creams
- Facial lotions, primers and makeup
- Hand creams
- Cleansing milks and masks
Potassium Cetyl Phosphate Specifications
| INCI name | Potassium Cetyl Phosphate |
|---|---|
| CAS No. | 19035-79-1 |
| Molecular formula | C16H34KO4P |
| Appearance | White to off-white fine powder |
| Cetyl alcohol | ≤2.0% |
| Potassium | 7.0–12.0% |
| HLB | 9–10 |
| Stable pH range | 4–9 |
Formulation Guidance
Recommended use level
0.3–1.0% as a co-emulsifier; ≥1.3% as a primary emulsifier, typically with co-emulsifiers.
Processing tips
Disperse in hot water to a slightly turbid solution, then combine with the remaining water phase. It can be added to the water or oil phase; a warm water phase is preferred. Higher concentrations may give a slight milky look.
Why Choose Amorewell
- ✔ Samples available for evaluation
- ✔ TDS, SDS and COA available on request
- ✔ Technical support for grade selection and formulation
Packaging
Packaging options and minimum order quantities are available on request. Contact us with your required quantity.
Frequently Asked Questions
What is Potassium Cetyl Phosphate used for?
Potassium Cetyl Phosphate is used in sunscreen lotions; sensitive-skin and baby creams; facial lotions, primers and makeup; hand creams.
How should Potassium Cetyl Phosphate be added to a formula?
Disperse in hot water to a slightly turbid solution, then combine with the remaining water phase. It can be added to the water or oil phase; a warm water phase is preferred. Higher concentrations may give a slight milky look.
What documents can I request?
Technical data sheet (TDS), safety data sheet (SDS), a recent certificate of analysis (COA) and samples are available on request.
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Potassium Cetyl Phosphate – Anionic O/W Emulsifier for Sun Care & Sensitive Skin
Potassium Cetyl Phosphate (CAS 19035-79-1): an EO-free anionic O/W emulsifier for mild, stable, silky sun-care, facial and baby-care emulsions.
- INCI Name: Potassium Cetyl Phosphate
- CAS No.: 19035-79-1
- Function: O/W emulsifier
- Appearance: White to off-white fine powder
- Recommended Use Level: 0.3–1.0% (co-emulsifier)

