Magnesium Propionate

INCI: MAGNESIUM PROPIONATE

CAS Number
557-27-7
Function
Preservative - protects cosmetic products from microbial spoilage
Safety Rating
MODERATE

Regulatory Status

๐Ÿ‡ช๐Ÿ‡บ EU Status permitted
EU Max Conc. 2%
๐Ÿ‡บ๐Ÿ‡ธ US Status permitted
US Notes Allowed - not prohibited or restricted; propionic acid and salts are CIR-reviewed

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

Generally low toxicity; the magnesium salt of propionic acid; potential mild skin sensitization at high concentrations is rare. Synthetic origin; antimicrobial action primarily against molds and some bacteria; magnesium counterion provides good water solubility; one of the simpler organic acid salt preservatives

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Concern Level: High

Regulatory Flags

potential-allergen preservative

Frequently Asked Questions

Is Magnesium Propionate safe in cosmetics?

Generally low toxicity; the magnesium salt of propionic acid; potential mild skin sensitization at high concentrations is rare. Synthetic origin; antimicrobial action primarily against molds and some bacteria; magnesium counterion provides good water solubility; one of the simpler organic acid salt preservatives The EU classifies Magnesium Propionate as "permitted". Safety rating: MODERATE.

Is Magnesium Propionate allowed in the EU?

Magnesium Propionate EU regulatory status: permitted. Maximum allowed concentration: 2%. This is based on EU Regulation 1223/2009 and its amendments.

What does Magnesium Propionate do in cosmetics?

Magnesium Propionate functions as: Preservative - protects cosmetic products from microbial spoilage. It is classified as a cosmetic ingredient in our database. CAS number: 557-27-7.

What is the Margin of Safety for Magnesium Propionate?

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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