Methyl-Methylene-Octadiene Alpha-Terpineols

INCI: METHYL-METHYLENE-OCTADIENE ALPHA-TERPINEOLS

CAS Number
Most likely 98-55-5 (α-terpineol) or 10482-56-1 ((R)-(+)-α-terpineol); the full INCI combines myrcene-type and terpineol descriptors
Function
Fragrance (perfuming)
Safety Rating
MODERATE

Regulatory Status

🇪🇺 EU Status permitted
🇺🇸 US Status permitted
US Notes Allowed - α-terpineol is GRAS; not on any prohibited or restricted list

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 well-tolerated; mild skin sensitization potential in susceptible individuals; oxidation products may increase irritation risk; standard fragrance safety precautions apply. α-Terpineol is a monocyclic monoterpene alcohol with a lilac/floral aroma; widely found in tea tree, pine, and eucalyptus oils; the "methyl-methylene-octadiene" descriptor reflects the terpene skeleton (related to myrcene, 7-methyl-3-methylene-1,6-octadiene); valued for pleasant floral character and antimicrobial ...

⚠️
Concern Level: Moderate

Regulatory Flags

potential-allergen fragrance-component

Frequently Asked Questions

Is Methyl-Methylene-Octadiene Alpha-Terpineols safe in cosmetics?

Generally well-tolerated; mild skin sensitization potential in susceptible individuals; oxidation products may increase irritation risk; standard fragrance safety precautions apply. α-Terpineol is a monocyclic monoterpene alcohol with a lilac/floral aroma; widely found in tea tree, pine, and eucalyptus oils; the "methyl-methylene-octadiene" descriptor reflects the terpene skeleton (related to myrcene, 7-methyl-3-methylene-1,6-octadiene); valued for pleasant floral character and antimicrobial ... The EU classifies Methyl-Methylene-Octadiene Alpha-Terpineols as "permitted". Safety rating: MODERATE.

Is Methyl-Methylene-Octadiene Alpha-Terpineols allowed in the EU?

Methyl-Methylene-Octadiene Alpha-Terpineols EU regulatory status: permitted. This is based on EU Regulation 1223/2009 and its amendments.

What does Methyl-Methylene-Octadiene Alpha-Terpineols do in cosmetics?

Methyl-Methylene-Octadiene Alpha-Terpineols functions as: Fragrance (perfuming). It is classified as a cosmetic ingredient in our database. CAS number: Most likely 98-55-5 (α-terpineol) or 10482-56-1 ((R)-(+)-α-terpineol); the full INCI combines myrcene-type and terpineol descriptors.

What is the Margin of Safety for Methyl-Methylene-Octadiene Alpha-Terpineols?

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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