Regulatory Status
For full compliance data across 55 jurisdictions, use the Substance Compliance tool.
Safety Data
Calculate MoS for your specific formulation with the MoS Calculator.
Expert Verdict
No major safety flags; fatty acid derivatives are generally well-tolerated. Limited standalone CIR review data - safety often extrapolated from stearic acid and branched-chain fatty acid family assessments. Branched-chain fatty acid; the methyl branch improves spreadability and reduces crystallinity compared to linear stearic acid, resulting in better skin feel. ⚠ Recommendation: Confirm exact CAS and isomer identity with your supplier before regulatory filing
Frequently Asked Questions
Is Methyl Stearic Acid safe in cosmetics?
No major safety flags; fatty acid derivatives are generally well-tolerated. Limited standalone CIR review data - safety often extrapolated from stearic acid and branched-chain fatty acid family assessments. Branched-chain fatty acid; the methyl branch improves spreadability and reduces crystallinity compared to linear stearic acid, resulting in better skin feel. ⚠ Recommendation: Confirm exact CAS and isomer identity with your supplier before regulatory filing The EU classifies Methyl Stearic Acid as "permitted". Safety rating: MODERATE.
Is Methyl Stearic Acid allowed in the EU?
Methyl Stearic Acid EU regulatory status: permitted. This is based on EU Regulation 1223/2009 and its amendments.
What does Methyl Stearic Acid do in cosmetics?
Methyl Stearic Acid functions as: Emollient, skin conditioning, opacifying agent. It is classified as a cosmetic ingredient in our database. CAS number: Likely refers to a branched-chain isomer such as 2-methyloctadecanoic acid - verify CAS against CosIng before use (no single universally agreed CAS in public databases).
What is the Margin of Safety for Methyl Stearic Acid?
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 Methyl Stearic Acid compliance across multiple jurisdictions:
Related Ingredients
Is Methyl Stearic Acid in Your Products?
Scan any product label with Piro — our free ingredient scanner. Point your camera at the ingredients list and get instant safety scores for every ingredient.
Try Piro Free →Analyze Your Full Ingredient List
Paste any INCI list into the Decoder for instant safety analysis, or calculate the Margin of Safety for Methyl Stearic Acid in your formulation.