Stearyl Phosphate

INCI: STEARYL PHOSPHATE

CAS Number
39471-52-8 (mono/di ester mixture)
Function
Surfactant – cleansing; Surfactant – emulsifying
Safety Rating
GOOD

Regulatory Status

🇪🇺 EU Status permitted
🇺🇸 US Status permitted
US Notes Permitted for cosmetic use; no restrictions

For full compliance data across 55 jurisdictions, use the Substance Compliance tool.

Safety Data

Margin of Safety (MoS)
adequate
Dermal Absorption
low
Sensitization
low

Calculate MoS for your specific formulation with the MoS Calculator.

Expert Verdict

Anionic surfactant; potential mild irritation at high concentrations; pH must be managed appropriately

⚠️
Concern Level: Moderate

Frequently Asked Questions

Is Stearyl Phosphate safe in cosmetics?

Anionic surfactant; potential mild irritation at high concentrations; pH must be managed appropriately The EU classifies Stearyl Phosphate as "permitted". Safety rating: GOOD.

Is Stearyl Phosphate allowed in the EU?

Stearyl Phosphate EU regulatory status: permitted. This is based on EU Regulation 1223/2009 and its amendments.

What does Stearyl Phosphate do in cosmetics?

Stearyl Phosphate functions as: Surfactant – cleansing; Surfactant – emulsifying. It is classified as a cosmetic ingredient in our database. CAS number: 39471-52-8 (mono/di ester mixture).

What is the Margin of Safety for Stearyl Phosphate?

adequate The Margin of Safety (MoS) is calculated using SCCS methodology. A MoS above 100 is generally considered safe. Use the MoS Calculator tool to calculate MoS for your specific formulation and product category.

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