Methylheptadienone

INCI: METHYLHEPTADIENONE

CAS Number
1604-28-0 (6-methyl-3,5-heptadien-2-one, most common isomer assigned this INCI)
Function
Fragrance ingredient
Safety Rating
MODERATE

Regulatory Status

๐Ÿ‡ช๐Ÿ‡บ EU Status permitted
๐Ÿ‡บ๐Ÿ‡ธ US Status permitted
US Notes Allowed - no specific prohibition; regulated as a fragrance component

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

Limited standalone safety data; assessed under RIFM/IFRA fragrance ingredient programs; should be used within IFRA recommended levels; potential skin sensitization at high concentrations (common concern for unsaturated ketones). Unsaturated diketone with a green, fruity, citrusy character; structurally related to methylheptenone but with an additional degree of unsaturation

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Concern Level: Moderate

Regulatory Flags

potential-allergen fragrance-component

Frequently Asked Questions

Is Methylheptadienone safe in cosmetics?

Limited standalone safety data; assessed under RIFM/IFRA fragrance ingredient programs; should be used within IFRA recommended levels; potential skin sensitization at high concentrations (common concern for unsaturated ketones). Unsaturated diketone with a green, fruity, citrusy character; structurally related to methylheptenone but with an additional degree of unsaturation The EU classifies Methylheptadienone as "permitted". Safety rating: MODERATE.

Is Methylheptadienone allowed in the EU?

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

What does Methylheptadienone do in cosmetics?

Methylheptadienone functions as: Fragrance ingredient. It is classified as a cosmetic ingredient in our database. CAS number: 1604-28-0 (6-methyl-3,5-heptadien-2-one, most common isomer assigned this INCI).

What is the Margin of Safety for Methylheptadienone?

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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