Methoxycinnamic Acid

INCI: METHOXYCINNAMIC ACID

CAS Number
830-09-1 (trans-4-methoxycinnamic acid)
Function
UV absorber; chemical intermediate for UV-B filter esters such as ethylhexyl methoxycinnamate
Safety Rating
MODERATE

Regulatory Status

๐Ÿ‡ช๐Ÿ‡บ EU Status permitted
๐Ÿ‡บ๐Ÿ‡ธ US Status permitted
US Notes Permitted for cosmetic use; not an FDA monograph-approved OTC sunscreen active

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

Safety Data

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

Calculate MoS for your specific formulation with the MoS Calculator.

Expert Verdict

Cinnamic acid class with moderate sensitization risk and phototoxicity potential; primarily used as a synthetic intermediate rather than a finished cosmetic ingredient with limited standalone safety data.

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Concern Level: Moderate

Regulatory Flags

potential-allergen

Frequently Asked Questions

Is Methoxycinnamic Acid safe in cosmetics?

Cinnamic acid class with moderate sensitization risk and phototoxicity potential; primarily used as a synthetic intermediate rather than a finished cosmetic ingredient with limited standalone safety data. The EU classifies Methoxycinnamic Acid as "permitted". Safety rating: MODERATE.

Is Methoxycinnamic Acid allowed in the EU?

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

What does Methoxycinnamic Acid do in cosmetics?

Methoxycinnamic Acid functions as: UV absorber; chemical intermediate for UV-B filter esters such as ethylhexyl methoxycinnamate. It is classified as a cosmetic ingredient in our database. CAS number: 830-09-1 (trans-4-methoxycinnamic acid).

What is the Margin of Safety for Methoxycinnamic Acid?

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.

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