PEG-9 Methyl Ether Dimethicone

INCI: PEG-9 METHYL ETHER DIMETHICONE

CAS Number
Not uniquely assigned (silicone–PEG copolymer)
Function
Hair conditioning; skin conditioning; surfactant - emulsifying
Safety Rating
GOOD

Regulatory Status

🇪🇺 EU Status permitted
🇺🇸 US Status permitted
US Notes CIR: Dimethicone copolyols reviewed; safe as used

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

Safety Data

Margin of Safety (MoS)
adequate
Dermal Absorption
negligible
Sensitization
none

Calculate MoS for your specific formulation with the MoS Calculator.

Expert Verdict

1,4-Dioxane residue from PEG moiety and cyclic siloxane (D4/D5) impurity must be controlled per EU REACH; note COSMOS restrictions may apply.

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Concern Level: Moderate

Regulatory Flags

peg-ingredient

Frequently Asked Questions

Is PEG-9 Methyl Ether Dimethicone safe in cosmetics?

1,4-Dioxane residue from PEG moiety and cyclic siloxane (D4/D5) impurity must be controlled per EU REACH; note COSMOS restrictions may apply. The EU classifies PEG-9 Methyl Ether Dimethicone as "permitted". Safety rating: GOOD.

Is PEG-9 Methyl Ether Dimethicone allowed in the EU?

PEG-9 Methyl Ether Dimethicone EU regulatory status: permitted. This is based on EU Regulation 1223/2009 and its amendments.

What does PEG-9 Methyl Ether Dimethicone do in cosmetics?

PEG-9 Methyl Ether Dimethicone functions as: Hair conditioning; skin conditioning; surfactant - emulsifying. It is classified as a cosmetic ingredient in our database. CAS number: Not uniquely assigned (silicone–PEG copolymer).

What is the Margin of Safety for PEG-9 Methyl Ether Dimethicone?

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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