Moderate Cosmetic Ingredient

Monazite

INCI: MONAZITE

CAS Number
1306-41-8
Function
Abrasive (when listed in cosmetics context)
Safety Rating
MODERATE

Regulatory Status

🇪🇺 EU Status prohibited
🇺🇸 US Status permitted
US Notes The Cosmetic Ingredient Review (CIR) has not published a standalone safety assessment for most Monascus ferment INCI names; manufacturers bear responsibility for safety substantiation under both EU CPSR and US MoCRA frameworks.

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

Safety Data

Margin of Safety (MoS)
not established
Dermal Absorption
low
Sensitization
low

Calculate MoS for your specific formulation with the MoS Calculator.

Expert Verdict

Radioactive - contains naturally occurring thorium (Th-232) and uranium series radionuclides. Classified as Carcinogenicity Category 1B. Harmful if swallowed (H302) and harmful if inhaled (H332). Emits low-level gamma radiation from bulk material. Absolutely unsuitable for cosmetic use.. A rare-earth phosphate mineral with the general formula (Ce,La,Pr,Nd,Th,Y)PO₄. While it appears in some cosmetic ingredient databases, its radioactive thorium content (typically 5-12% ThO₂) makes it fundament...

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Concern Level: High

Regulatory Flags

natural-origin

Frequently Asked Questions

Is Monazite safe in cosmetics?

Radioactive - contains naturally occurring thorium (Th-232) and uranium series radionuclides. Classified as Carcinogenicity Category 1B. Harmful if swallowed (H302) and harmful if inhaled (H332). Emits low-level gamma radiation from bulk material. Absolutely unsuitable for cosmetic use.. A rare-earth phosphate mineral with the general formula (Ce,La,Pr,Nd,Th,Y)PO₄. While it appears in some cosmetic ingredient databases, its radioactive thorium content (typically 5-12% ThO₂) makes it fundament... The EU classifies Monazite as "prohibited". Safety rating: MODERATE.

Is Monazite allowed in the EU?

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

What does Monazite do in cosmetics?

Monazite functions as: Abrasive (when listed in cosmetics context). It is classified as a cosmetic ingredient in our database. CAS number: 1306-41-8.

What is the Margin of Safety for Monazite?

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.

Compliance Tools

Check Monazite compliance across multiple jurisdictions:

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Ingredient Decoder
Paste a full ingredient list for instant analysis
 🌸
82 Allergen Checker
Check for EU declarable fragrance allergens
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Substance Compliance
Check compliance across 55 jurisdictions
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MoS Calculator
Calculate Margin of Safety using SCCS methodology
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Heavy Metal Limits
Compare limits across jurisdictions

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