Phenethyl Disiloxane

INCI: PHENETHYL DISILOXANE

CAS Number
Not widely published — limited CosIng entry
Function
Skin conditioning / Hair conditioning (silicone class)
Safety Rating
MODERATE

Regulatory Status

🇪🇺 EU Status permitted
🇺🇸 US Status permitted
US Notes Not specifically restricted by FDA

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

Safety Data

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

Calculate MoS for your specific formulation with the MoS Calculator.

Expert Verdict

Data gap. No RIFM assessment, no CIR review, no SCCS opinion identified. For CPSR purposes, would require supplier-provided toxicological data package or read-across justification to a well-characterized disiloxane.

⚠️
Concern Level: Moderate

Frequently Asked Questions

Is Phenethyl Disiloxane safe in cosmetics?

Data gap. No RIFM assessment, no CIR review, no SCCS opinion identified. For CPSR purposes, would require supplier-provided toxicological data package or read-across justification to a well-characterized disiloxane. The EU classifies Phenethyl Disiloxane as "permitted". Safety rating: MODERATE.

Is Phenethyl Disiloxane allowed in the EU?

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

What does Phenethyl Disiloxane do in cosmetics?

Phenethyl Disiloxane functions as: Skin conditioning / Hair conditioning (silicone class). It is classified as a cosmetic ingredient in our database. CAS number: Not widely published — limited CosIng entry.

What is the Margin of Safety for Phenethyl Disiloxane?

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.

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