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Polymethylsilsesquioxane

Catalog Number

ACM68554701-1

CAS

68554-70-1

Synonyms

Silsesquioxanes, Me

Molecular Weight

7000 - 8000 g/mol

Melting Point

> 999 °C

Purity

0.999

Density

1.3 g/cm³

Solubility

Water-insoluble

Appearance

Fine, white powder

Application

Creams, foundations, lipsticks, eye shadows, eyeliners, mascara and powder products.

Storage

Store in a closed container at a dry place at room temperature

Actives

95%

6.0-8.0

Physical State

Solid / Liquid

Typical Applications

Use as film-formingagent.
Use as lubricant.
Use as anti-foaming agent.

MSDS

Download MSDS

COA

Download COA

Spec Sheet

Download Spec Sheet

Custom Q&A

What is polymethylsilsesquioxane used for in cosmetics?

Polymethylsilsesquioxane is used as a film former and skin conditioning ingredient.

What form does polymethylsilsesquioxane come in?

Polymethylsilsesquioxane comes in a powder form with round particles.

What is the maximum amount of polymethylsilsesquioxane used in cosmetics?

Polymethylsilsesquioxane can be used in amounts up to 55.2% in cosmetics.

Is there any evidence of toxicity or sensitization from polymethylsilsesquioxane?

There is no evidence of toxicity or sensitization from polymethylsilsesquioxane.

How is polymethylsilsesquioxane formed?

Polymethylsilsesquioxane is formed through the condensation and hydrolysis of silicone methyltrimethoxysilane.

What are some other names for silicones?

Other names for silicones include siloxanes, silicones, and organosiloxanes.

What are the benefits of using polymethylsilsesquioxane in skincare?

Polymethylsilsesquioxane provides a protective barrier, helps retain moisture, and can temporarily fill in fine lines and wrinkles.

What are some concerns about polymethylsilsesquioxane and other silicones?

Some concerns about polymethylsilsesquioxane and other silicones include claims of skin concerns, sensitization, and skin suffocation, but these claims are not supported by research.

Can silicones penetrate the skin?

Silicones cannot penetrate the skin due to their large molecular size.

Has polymethylsilsesquioxane been deemed safe for use in cosmetics?

Yes, polymethylsilsesquioxane has been deemed safe for use in cosmetics by the Cosmetic Ingredient Review Expert Panel.

※Please kindly note that our products are for research use only.