Isobutyl PEG-9 Polydimethylsiloxyethyl Dimethicone

INCI: ISOBUTYL PEG-9 POLYDIMETHYLSILOXYETHYL DIMETHICONE

CAS Number
Not assigned as a single CAS (polymeric silicone-PEG copolymer; related parent structure PEG-9 Polydimethylsiloxyethyl Dimethicone registered in CosIng)
Function
Skin conditioning, Emulsifying (silicone surfactant for W/Si or W/O emulsions)
Safety Rating
GOOD

Regulatory Status

๐Ÿ‡ช๐Ÿ‡บ EU Status permitted
๐Ÿ‡บ๐Ÿ‡ธ US Status permitted
US Notes Not restricted

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

Contains PEG (ethoxylated) with potential 1,4-dioxane trace contamination from ethoxylation process; test incoming raw material for 1,4-dioxane residuals and ensure supplier provides certificate of analysis with dioxane specification.

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Concern Level: Low

Regulatory Flags

peg-ingredient

Frequently Asked Questions

Is Isobutyl PEG-9 Polydimethylsiloxyethyl Dimethicone safe in cosmetics?

Contains PEG (ethoxylated) with potential 1,4-dioxane trace contamination from ethoxylation process; test incoming raw material for 1,4-dioxane residuals and ensure supplier provides certificate of analysis with dioxane specification. The EU classifies Isobutyl PEG-9 Polydimethylsiloxyethyl Dimethicone as "permitted". Safety rating: GOOD.

Is Isobutyl PEG-9 Polydimethylsiloxyethyl Dimethicone allowed in the EU?

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

What does Isobutyl PEG-9 Polydimethylsiloxyethyl Dimethicone do in cosmetics?

Isobutyl PEG-9 Polydimethylsiloxyethyl Dimethicone functions as: Skin conditioning, Emulsifying (silicone surfactant for W/Si or W/O emulsions). It is classified as a cosmetic ingredient in our database. CAS number: Not assigned as a single CAS (polymeric silicone-PEG copolymer; related parent structure PEG-9 Polydimethylsiloxyethyl Dimethicone registered in CosIng).

What is the Margin of Safety for Isobutyl PEG-9 Polydimethylsiloxyethyl Dimethicone?

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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