Potassium Isosteareth-2 Phosphate

INCI: POTASSIUM ISOSTEARETH-2 PHOSPHATE

CAS Number
Not available / proprietary trade ingredient
Function
Emulsifier (anionic phosphate ester surfactant); used in W/O and O/W emulsion systems
Safety Rating
GOOD

Regulatory Status

๐Ÿ‡ช๐Ÿ‡บ EU Status permitted
๐Ÿ‡บ๐Ÿ‡ธ US Status permitted
US Notes Permitted in cosmetics; no specific restrictions; alkyl phosphate esters are a reviewed category

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

Limited ingredient-specific toxicological data; 1,4-dioxane contamination is theoretically possible due to ethoxylation (isosteareth-2 component) โ€” verify with supplier COA

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Concern Level: Moderate

Frequently Asked Questions

Is Potassium Isosteareth-2 Phosphate safe in cosmetics?

Limited ingredient-specific toxicological data; 1,4-dioxane contamination is theoretically possible due to ethoxylation (isosteareth-2 component) โ€” verify with supplier COA The EU classifies Potassium Isosteareth-2 Phosphate as "permitted". Safety rating: GOOD.

Is Potassium Isosteareth-2 Phosphate allowed in the EU?

Potassium Isosteareth-2 Phosphate EU regulatory status: permitted. This is based on EU Regulation 1223/2009 and its amendments.

What does Potassium Isosteareth-2 Phosphate do in cosmetics?

Potassium Isosteareth-2 Phosphate functions as: Emulsifier (anionic phosphate ester surfactant); used in W/O and O/W emulsion systems. It is classified as a cosmetic ingredient in our database. CAS number: Not available / proprietary trade ingredient.

What is the Margin of Safety for Potassium Isosteareth-2 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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