Excellent Cosmetic Ingredient NOAEL Data

Trimethoxycaprylylsilane

INCI: TRIMETHOXYCAPRYLYLSILANE

CAS Number
3069-40-7
Function
Surface modifier, binder, skin conditioning (hydrophobic pigment/UV filter surface treatment)
Safety Rating
EXCELLENT

Regulatory Status

๐Ÿ‡ช๐Ÿ‡บ EU Status permitted
๐Ÿ‡บ๐Ÿ‡ธ US Status permitted
US Notes CIR Expert Panel concluded safe in cosmetics in present practices of use and concentration

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

Safety Data

Margin of Safety (MoS)
not established
Dermal Absorption
negligible
Sensitization
none

Calculate MoS for your specific formulation with the MoS Calculator.

Toxicological Studies

2 study endpoints found for Trimethoxycaprylylsilane. NOAEL (No Observed Adverse Effect Level) values are used to calculate the Margin of Safety per SCCS methodology.

Endpoint Value Route Species Study Type Source
NOAEL 175 mg/kg bw/day oral rat oral REACH
NOAEL 100 mg/kg bw/day oral rat oral REACH

Expert Verdict

Methanol release during hydrolysis/condensation on particle surfaces โ€” relevant at manufacturing stage, not in finished product; standard silicone ingredient considerations

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Concern Level: None

Frequently Asked Questions

Is Trimethoxycaprylylsilane safe in cosmetics?

Methanol release during hydrolysis/condensation on particle surfaces โ€” relevant at manufacturing stage, not in finished product; standard silicone ingredient considerations The EU classifies Trimethoxycaprylylsilane as "permitted". Safety rating: EXCELLENT. 2 toxicological study endpoint(s) are available in our database.

Is Trimethoxycaprylylsilane allowed in the EU?

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

What does Trimethoxycaprylylsilane do in cosmetics?

Trimethoxycaprylylsilane functions as: Surface modifier, binder, skin conditioning (hydrophobic pigment/UV filter surface treatment). It is classified as a cosmetic ingredient in our database. CAS number: 3069-40-7.

What is the Margin of Safety for Trimethoxycaprylylsilane?

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.

What is the NOAEL for Trimethoxycaprylylsilane?

The NOAEL (No Observed Adverse Effect Level) for Trimethoxycaprylylsilane is 175 mg/kg bw/day based on a oral study via oral route in rat. A total of 2 study endpoints are available. Source: REACH.

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