PEG-9M

CAS Number
25322-68-3 (same polymer class as PEG-90M, lower MW grade ≈ 400,000 Da)
Function
Viscosity controlling agent, binder, film former
Safety Rating
GOOD

Regulatory Status

🇪🇺 EU Status permitted
🇺🇸 US Status permitted
US Notes CIR-reviewed as part of PEG group assessment: safe in cosmetics

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

High-MW PEG polymer with negligible absorption; 1,4-dioxane residual must be controlled and monitored in manufacturing.

⚠️
Concern Level: Low

Regulatory Flags

peg-ingredient

Frequently Asked Questions

Is PEG-9M safe in cosmetics?

High-MW PEG polymer with negligible absorption; 1,4-dioxane residual must be controlled and monitored in manufacturing. The EU classifies PEG-9M as "permitted". Safety rating: GOOD.

Is PEG-9M allowed in the EU?

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

What does PEG-9M do in cosmetics?

PEG-9M functions as: Viscosity controlling agent, binder, film former. It is classified as a cosmetic ingredient in our database. CAS number: 25322-68-3 (same polymer class as PEG-90M, lower MW grade ≈ 400,000 Da).

What is the Margin of Safety for PEG-9M?

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.

📱

Is PEG-9M 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 PEG-9M in your formulation.