Sodium Stearyl Fumarate

INCI: SODIUM STEARYL FUMARATE

CAS Number
4070-80-8 (note: also used as pharmaceutical excipient)
Function
Bulking agent
Safety Rating
GOOD

Regulatory Status

๐Ÿ‡ช๐Ÿ‡บ EU Status permitted
๐Ÿ‡บ๐Ÿ‡ธ US Status permitted
US Notes CIR concluded fumarate esters including sodium stearyl fumarate are safe for cosmetic use

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

Safety Data

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

Calculate MoS for your specific formulation with the MoS Calculator.

Expert Verdict

Do NOT confuse with dimethyl fumarate (DMF) which is a potent dermal sensitizer banned in consumer products in the EU; sodium stearyl fumarate's large chain prevents this issue

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Concern Level: Moderate

Regulatory Flags

potential-allergen

Frequently Asked Questions

Is Sodium Stearyl Fumarate safe in cosmetics?

Do NOT confuse with dimethyl fumarate (DMF) which is a potent dermal sensitizer banned in consumer products in the EU; sodium stearyl fumarate's large chain prevents this issue The EU classifies Sodium Stearyl Fumarate as "permitted". Safety rating: GOOD.

Is Sodium Stearyl Fumarate allowed in the EU?

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

What does Sodium Stearyl Fumarate do in cosmetics?

Sodium Stearyl Fumarate functions as: Bulking agent. It is classified as a cosmetic ingredient in our database. CAS number: 4070-80-8 (note: also used as pharmaceutical excipient).

What is the Margin of Safety for Sodium Stearyl Fumarate?

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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