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CETYL PHOSPHATE

Last update on Jul 23, 2025

Cetyl Phosphate is a synthetic emulsifier that helps mix oil and water-based ingredients. It enhances the texture of formulations and prevents them from separating over time. As a thickener, this ingredient provides the right viscosity for cosmetic products like creams and lotions. It also enhances their glossy appearance and, in turn, the overall user experience. Cetyl Phosphate is commonly used in sunscreens, where it improves the dispersion and stability of UV filters. In its raw form, it appears as waxy white flakes that are oil-soluble. Additionally, Cetyl Phosphate is considered safe for use at low concentrations. It is non-greasy and provides a good rub-in and after-feel.

CAS Number: 3539-43-3Chem/IUPAC Name: Hexadecyl dihydrogen phosphateEINECS/ELINCS No: 222-581-1COSING REF No: 74967

Products with CETYL PHOSPHATE

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Emulgar BG-7 Emulsifier

by Biogründl

INCI: GLYCERYL STEARATE | C12-20 ACID PEG-8 ESTER | CETYL PHOSPHATE

Eusolex® T-EASY

by Susonity

INCI: CETYL PHOSPHATE | SILICA | TITANIUM DIOXIDE

What is CETYL PHOSPHATE used for?

Cetyl Phosphate is quite beneficial in cosmetics due to its emulsifying, thickening, and viscosity-enhancing properties. It stabilizes emulsions and prevents them from separating over time. It is great for cosmetics that contain both oil and water-based ingredients, as it helps mix them together. In products like creams, lotions, and sunscreens, it adjusts the thickness and improves the spreadability of these formulations. It also provides a glossy shine that is visually appealing. In shampoos and conditioners, Cetyl Phosphate enhances the consistency and offers a luxurious feel without weighing the hair down. This ingredient provides a good after-feel that softens the skin and detangles hair.

Origin

Cetyl Phosphate is synthesized by chemical esterification between cetyl alcohol and phosphoric acid. The reaction takes place under controlled heat and is aided by a catalyst. The resulting ingredient is dried and filtered.

What does CETYL PHOSPHATE do in a formulation?

EMULSIFYING|
SURFACTANT|
UV FILTER|
SKIN CONDITIONING

Safety Profile

Cetyl Phosphate is a mild ingredient that is safe and non-irritating for the skin. Its recommended usage levels are between 0.2% and 2%. Higher concentrations may pose risks of irritation and itchiness. This ingredient is also non-comedogenic and widely accepted in global cosmetics formulations. However, patch tests must still be performed when using the ingredient for the first time.

CETYL PHOSPHATE technical profile

PropertyValues

Boiling Point

440°C (decomposes)

Melting Point

68°C

Solubility

Soluble in oil; insoluble in water