Silica Dimethicone Silylate

INCI: SILICA DIMETHICONE SILYLATE

CAS Number
Not a single CAS — composite of dimethicone-treated silica (base silica CAS 112945-52-5 or 7631-86-9 with dimethicone surface treatment)
Function
Thickening, thixotropy control in polar emollients, anti-caking
Safety Rating
GOOD

Regulatory Status

🇪🇺 EU Status permitted
🇺🇸 US Status permitted
US Notes Permitted under general cosmetic ingredient provisions

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

Safety Data

Margin of Safety (MoS)
adequate
Dermal Absorption
negligible
Sensitization
low

Calculate MoS for your specific formulation with the MoS Calculator.

Expert Verdict

⚠ Nano-form requires EU notification per Art. 16; inhalation exposure concern in loose powder formulations

⚠️
Concern Level: Low

Frequently Asked Questions

Is Silica Dimethicone Silylate safe in cosmetics?

⚠ Nano-form requires EU notification per Art. 16; inhalation exposure concern in loose powder formulations The EU classifies Silica Dimethicone Silylate as "permitted". Safety rating: GOOD.

Is Silica Dimethicone Silylate allowed in the EU?

Silica Dimethicone Silylate EU regulatory status: permitted. This is based on EU Regulation 1223/2009 and its amendments.

What does Silica Dimethicone Silylate do in cosmetics?

Silica Dimethicone Silylate functions as: Thickening, thixotropy control in polar emollients, anti-caking. It is classified as a cosmetic ingredient in our database. CAS number: Not a single CAS — composite of dimethicone-treated silica (base silica CAS 112945-52-5 or 7631-86-9 with dimethicone surface treatment).

What is the Margin of Safety for Silica Dimethicone Silylate?

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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