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Isomethyl Beta Ionone

Aroma Chemical Base Note (estimated) CAS 79-89-0

A soft woody note with an ambergris character and a soft orris floral facet. Waxy and natural, it adds a violet woody lift to compositions.

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Odor profile

Note Base Note (estimated)
Descriptor 1 Floral
Descriptor 2 Violet
Descriptor 3 Powdery

Identification

CAS Number79-89-0
INCI NameIsomethyl-beta-ionone
CategoryAroma Chemical
FormulaC14H22O
Mol. Weight206.32
IUPAC Name3-methyl-4-(2,6,6-trimethylcyclohexen-1-yl)but-3-en-2-one
InChIKeyNSSHGPBKKVJJMM-UHFFFAOYSA-N

Synonyms

Iso-Methyl-Beta-Ionone; 3-buten-2-one, 3-methyl-4-(2,6,6-trimethyl-1-cyclohexen-1-yl)-; delta-iraldeine; beta-iso methyl ionone; delta-methyl ionone (so called); (3E)-3-methyl-4-(2,6,6-trimethyl-1-cyclohexen-1-yl)-3-buten-2-one; 3-methyl-4-(2,6,6-trimethyl-1-cyclohexen-1-yl)-3-buten-2-one; (E)-3-methyl-4-(2,6,6-trimethyl-1-cyclohexenyl)but-3-en-2-one; gamma-methyl-beta-ionone; beta-iso methylionone; 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

Physical and chemical data

Boiling Point 301.28 °C
Melting Point 62.00 °C
Vapor Pressure 0.001000 mmHg @ 25.00 C. (est)
LogP 4.008
Solubility alcohol; water, 2.309 mg/L @ 25 C (est); bath foam
Appearance Liquid

Regulatory status

IFRA maximum concentrations

CategoryUseLimit in the finished product
Category 1 Lip products, toys 5.4 %
Category 2 Deodorants, antiperspirants 1.6 %
Category 3 Eye products 32 %
Category 4 Fine fragrance 30 %
Category 5A Body lotion 7.6 %
Category 5B Face cream 7.6 %
Category 5C Hand cream 7.6 %
Category 5D Baby creams, oils 7.6 %
Category 6 Oral care, mouthwash 18 %
Category 7A Rinse-off hair products 61 %
Category 7B Leave-on hair products 61 %
Category 8 Intimate and baby wipes 3.2 %
Category 9 Soap, shampoo, rinse-off 59 %
Category 10A Household care, hand contact 100 %
Category 10B Aerosol air fresheners 100 %
Category 11A Intended skin contact 100 %
Category 11B Minimal skin contact 100 %
Category 12 No skin contact, candles Not restricted
IFRA Amendment49
Restriction TypeRestriction / Specification
Critical EffectDermal Sensitization
SpecificationPseudo methyl ionones (CAS numbers 26651-96- 7, 72968-25-3, 1117-41-5) should not be used as fragrance ingredient as such. A level of up to 2% of Pseudo methyl ionones as an impurity in Methyl ionones is accepted. Page 189 of 709 Amendment 49 Methyl ionone, mixed isomers 2020 (Amendment 49) 3/4 IFRA STANDARD

All figures on this page are guide values collected from public reference works and supplier declarations. They differ between batches, origins and qualities. The data sheet of your own supplier is always the authoritative document for the material you actually use.

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