Silicon/Titanium/Cerium/Iron Oxides

INCI: SILICON/TITANIUM/CERIUM/IRON OXIDES

CAS Number
No single CAS — composite material (individual oxides: SiO₂ 7631-86-9, TiO₂ 13463-67-7, CeO₂ 1306-38-3, Fe₂O₃ 1309-37-1)
Function
Bulking, opacifying
Safety Rating
GOOD

Regulatory Status

🇪🇺 EU Status permitted
🇺🇸 US Status permitted
US Notes Permitted; individual oxide components (TiO₂, iron oxides) are FDA-approved color additives under 21 CFR 73

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

⚠ TiO₂ classified as Category 2 carcinogen by inhalation (EU CLP) — avoid inhalable powder forms; cerium oxide nano-safety data still evolving; if any component is nano-sized, EU Art. 16 notification required; TiO₂ restrictions under ongoing EU regulatory scrutiny

⚠️
Concern Level: Moderate

Frequently Asked Questions

Is Silicon/Titanium/Cerium/Iron Oxides safe in cosmetics?

⚠ TiO₂ classified as Category 2 carcinogen by inhalation (EU CLP) — avoid inhalable powder forms; cerium oxide nano-safety data still evolving; if any component is nano-sized, EU Art. 16 notification required; TiO₂ restrictions under ongoing EU regulatory scrutiny The EU classifies Silicon/Titanium/Cerium/Iron Oxides as "permitted". Safety rating: GOOD.

Is Silicon/Titanium/Cerium/Iron Oxides allowed in the EU?

Silicon/Titanium/Cerium/Iron Oxides EU regulatory status: permitted. This is based on EU Regulation 1223/2009 and its amendments.

What does Silicon/Titanium/Cerium/Iron Oxides do in cosmetics?

Silicon/Titanium/Cerium/Iron Oxides functions as: Bulking, opacifying. It is classified as a cosmetic ingredient in our database. CAS number: No single CAS — composite material (individual oxides: SiO₂ 7631-86-9, TiO₂ 13463-67-7, CeO₂ 1306-38-3, Fe₂O₃ 1309-37-1).

What is the Margin of Safety for Silicon/Titanium/Cerium/Iron Oxides?

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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