Is Isomethyl Beta-Ionone safe in cosmetics?
Isomethyl Beta-Ionone has a safety rating of "MODERATE" in our database. EU status: restricted. US status: permitted.
MODERATE
Cosmetic Ingredient
Isomethyl Beta-Ionone
Also known as: 3-Buten-2-one, 3-methyl-4-(2,6,6-trimethyl-1-cyclohexen-1-yl)-, EINECS 201-231-1, FEMA No. 2713, delta-Iraldeine, Methyl-delta-ionone (+4 more)
INCI: ISOMETHYL BETA-IONONE
Isomethyl Beta-Ionone (CAS 79-89-0) is a cosmetic cosmetic ingredient functioning as Fragrance (perfuming agent). EU Regulation 1223/2009 status: restricted. Industrial safety data is also available in the chemical safety database. Same-CAS public records also appear in industrial chemical safety and food safety data.
Function
Fragrance (perfuming agent)
Editorial assessment
MODERATE
Preliminary editorial note — not a computed safety verdict.
Chemistry & Identifiers
IUPAC Name
3-methyl-4-(2,6,6-trimethylcyclohexen-1-yl)but-3-en-2-one
InChIKey
NSSHGPBKKVJJMM-UHFFFAOYSA-N
Regulatory Status
EU EU Status
restricted
US US Status
permitted
US Notes
Permitted — no CFR restriction for cosmetic use. FDA revoked GRAS status for food flavoring (2018 ban on 7 synthetic flavoring substances including beta-isomethylionone).
For full compliance data across multiple jurisdictions, use the Substance Compliance tool.
Safety Data
Margin of Safety, dermal absorption, and sensitization profile summaries for Isomethyl Beta-Ionone.
Calculate MoS for your specific formulation with the MoS Calculator.
PubChem Annotations
Safety and regulatory annotations from PubChem (NCBI) aggregated sources.
Regulatory (2)
JECFA Number
2186
Source: WHO/JECFA
JECFA Evaluation
beta-ISOMETHYLIONONE | 2014 | No safety concern at current estimated dietary exposure when used as a flavouring agent | TRS 990-JECFA 79/69 | FAS 70-JECFA 53/217
Source: WHO/JECFA
Function Categories & List Membership
Cosmetic/Chemical Function Categories
Deodorizer
Flavouring and nutrient
Fragrance
Regulatory List Membership (2)
IFRA Fragrance Transparency List
FDA Substances Added to Food (EAFUS)
Editorial summary
Preliminary editorial summary for Isomethyl Beta-Ionone — not a computed safety verdict. See the sourced toxicological data above.
Regulatory Flags
fragrance-component
ifra_fragrance
fda_food_additive
Known Synonyms
3-Buten-2-one, 3-methyl-4-(2,6,6-trimethyl-1-cyclohexen-1-yl)-
EINECS 201-231-1
FEMA No. 2713
delta-Iraldeine
Methyl-delta-ionone
NSC 66433
4-(2,6,6-Trimethyl-1-cyclohexen-1-yl)-3-methyl-3-buten-2-one
4-(2,6,6-Trimethyl-1-cyclohexenyl)-3-methyl-3-buten-2-one
UNII-MA3RM4FRWI
Chemical Function
Fragrance
Deodorizer
Flavouring and nutrient
Regulatory Lists
Europe
food_additive; Substances Added to Food (formerly EAFUS) (2/2019)
IFRA Transparency
Australian Status
AICIS status: listed
Cross-Vertical Safety Context
Same-CAS public records found in food safety data.
SOURCE
EFSA / FDA GRAS
food_additives
Food Safety Data
Same-CAS food additive or FDA GRAS records from the core public database.
Food Name
BETA-ISOMETHYLIONONE
ADI
No safety concern at current estimated dietary exposure when used as a flavouring agent mg/kg bw
Food Category
flavoring
Frequently Asked Questions
Is Isomethyl Beta-Ionone allowed in the EU?
Isomethyl Beta-Ionone EU regulatory status: restricted. This is based on EU Regulation 1223/2009 and its amendments.
What does Isomethyl Beta-Ionone do in cosmetics?
Isomethyl Beta-Ionone functions as: Fragrance (perfuming agent). It is classified as a cosmetic ingredient in our database. CAS number: 79-89-0.
Is Isomethyl Beta-Ionone used outside cosmetics?
Isomethyl Beta-Ionone also appears in industrial chemical safety and food safety data. The cross-vertical cards on this page render same-CAS public rows from the matched databases.
Compliance Tools
Check Isomethyl Beta-Ionone compliance across multiple jurisdictions:
Ingredient Decoder
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82 Allergen Checker
Check for EU declarable fragrance allergens
Substance Compliance
Check compliance across multiple jurisdictions
MoS Calculator
Calculate Margin of Safety using SCCS methodology
Heavy Metal Limits
Compare limits across jurisdictions
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Chemical family
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Chemical family
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Chemical family
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