Moderate Cosmetic Ingredient

Isotridecyl Stearate

INCI: ISOTRIDECYL STEARATE

CAS Number
31565-37-4
Function
Skin Conditioning (emollient)
Safety Rating
MODERATE

Regulatory Status

🇪🇺 EU Status permitted
🇺🇸 US Status permitted
US Notes Allowed - CIR has reviewed alkyl stearate esters as a class and found them safe as used in cosmetics

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

Safety Data

Margin of Safety (MoS)
not established
Dermal Absorption
low
Sensitization
low

Calculate MoS for your specific formulation with the MoS Calculator.

Expert Verdict

Very low concern; non-irritating, non-sensitizing ester; typical specifications include acid value ≤1.0 and moisture ≤0.08%. Ester of stearic acid and isotridecyl alcohol (branched C13); molecular weight ~466.8 g/mol; provides rich emolliency and excellent spreadability; classified as eco-friendly/green chemistry

⚠️
Concern Level: Moderate

Regulatory Flags

potential-allergen

Frequently Asked Questions

Is Isotridecyl Stearate safe in cosmetics?

Very low concern; non-irritating, non-sensitizing ester; typical specifications include acid value ≤1.0 and moisture ≤0.08%. Ester of stearic acid and isotridecyl alcohol (branched C13); molecular weight ~466.8 g/mol; provides rich emolliency and excellent spreadability; classified as eco-friendly/green chemistry The EU classifies Isotridecyl Stearate as "permitted". Safety rating: MODERATE.

Is Isotridecyl Stearate allowed in the EU?

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

What does Isotridecyl Stearate do in cosmetics?

Isotridecyl Stearate functions as: Skin Conditioning (emollient). It is classified as a cosmetic ingredient in our database. CAS number: 31565-37-4.

What is the Margin of Safety for Isotridecyl Stearate?

not established 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.

Compliance Tools

Check Isotridecyl Stearate compliance across multiple jurisdictions:

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Ingredient Decoder
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82 Allergen Checker
Check for EU declarable fragrance allergens
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Substance Compliance
Check compliance across 55 jurisdictions
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MoS Calculator
Calculate Margin of Safety using SCCS methodology
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Heavy Metal Limits
Compare limits across jurisdictions

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