Iso E Super
Aroma Chemical Base Note CAS 54464-57-2
Smooth, dry and transparent woody amber with a velvety cedar character and a soft, musky warmth that stays close to the skin. Lightly vetiver and earthy, it is prized for the subtle, diffusive halo it gives modern woody accords.
Odor profile
| Note | Base Note |
| Descriptor 1 | Woody |
| Descriptor 2 | Floral |
| Descriptor 3 | Amber |
| Odor Impact1 | 40 |
| Impact Level | Medium |
| Tenacity1 | 280 h |
| Tenacity2 | 172 h |
1 Source: PerfumersWorld
2 Source: The Good Scents Company
Both tenacity figures are blotter life. The two labs use different evaluation protocols, so the numbers are not directly comparable — read them as two independent readings, not as a contradiction.
Identification
| CAS Number | 54464-57-2 |
| CAS 2 | 68155-67-9 |
| CAS 3 | 68155-66-8 |
| INCI Name | Tetramethyl acetyloctahydronaphthalenes |
| Category | Aroma Chemical |
| Formula | C16H26O |
| Mol. Weight | 234.38 |
| IUPAC Name | 1-(2,3,8,8-tetramethyl-1,3,4,5,6,7-hexahydronaphthalen-2-yl)ethanone |
| InChIKey | FVUGZKDGWGKCFE-UHFFFAOYSA-N |
Synonyms
3-Acetyl-3,4,10,10-tetramethylbicyclo[4.4.0]decane, Ethanone, 8-octahydro-2, 8-tetramethyl-2-naphthalene, 2-Acetonaphthalene, 8-tetramethyl- Boisvelone, Iso Cyclemone E, Marion, Vamba (Base, Timbersilk, 1-(1, 8-tetramethyl-2-naphthalenyl)ethanone, 8A-octahydro-2, 8-tetramethyl-2-naphthyl)ethan-1-one, 2-acetonaphthone, 1,2,3,4,5,6,7,8-octahydro-2,3,8,8-tetramethyl-, 7-acetyl,1,2,3,4,5,6,7,8-octahydro-1,1,6,7-tetramethyl naphthalene, amber fleur, iso amber super, amberfleur, ambergris ketone, amberix super, amberlan, amberonne, ambroise super, anthamber, boisvelone, iso cyclemone E (IFF), dimethyl myrcetone, ethanone, 1-(1,2,3,4,5,6,7,8-octahydro-2,3,8,8-tetramethyl-2-naphthalenyl)-, hamber, iso e super (IFF), iso gamma super, methyl cyclo myrcetone, methyl cyclomyrcetone, iso myrcetone, 1,2,3,4,5,6,7,8-octahydro-2,3,8,8-tetramethyl-2-acetonaphthone, 1,2,3,4,5,6,7,8-octahydro-2,3,8,8-tetramethyl acetonaphthone, 1,2,3,4,5,6,7,8-octahydro-2,3,8,8-tetramethyl-2-naphthyl ethanone, 1-(1,2,3,4,5,6,7,8-octahydro-2,3,8,8-tetramethyl-2-naphthyl)ethan-1-one, orbitone (Takasago)
Physical and chemical data
| Boiling Point | 312.16 °C |
| Flash Point | 111.11 °C |
| Density | 0.96000 |
| Refractive Index | 1.49700 |
| Vapor Pressure | 0.001000 mmHg @ 25.00 C. (est) |
| LogP | 3.6 |
| Solubility | alcohol; water, 1.077 mg/L @ 25 C (est); acid cleaner |
| Appearance | Other Solid; CBI; Dry Powder; Liquid; Liquid |
Regulatory status
IFRA maximum concentrations
| Category | Use | Limit in the finished product |
|---|---|---|
| Category 1 | Lip products, toys | 0.41 % |
| Category 2 | Deodorants, antiperspirants | 1.1 % |
| Category 3 | Eye products | 0.41 % |
| Category 4 | Fine fragrance | 20 % |
| Category 5A | Body lotion | 5.1 % |
| Category 5B | Face cream | 0.56 % |
| Category 5C | Hand cream | 0.76 % |
| Category 5D | Baby creams, oils | 0.19 % |
| Category 6 | Oral care, mouthwash | 0.0093 % |
| Category 7A | Rinse-off hair products | 0.67 % |
| Category 7B | Leave-on hair products | 0.67 % |
| Category 8 | Intimate and baby wipes | 0.19 % |
| Category 9 | Soap, shampoo, rinse-off | 2.4 % |
| Category 10A | Household care, hand contact | 2.4 % |
| Category 10B | Aerosol air fresheners | 6.6 % |
| Category 11A | Intended skin contact | 0.19 % |
| Category 11B | Minimal skin contact | 0.19 % |
| Category 12 | No skin contact, candles | Not restricted |
| IFRA Amendment | 49 |
| Restriction Type | Restriction |
| Critical Effect | Dermal Sensitization And Systemic Toxicity |
EU allergen declaration
| Substance | Share |
|---|---|
| Tetramethyl acetyloctahydronaphthalenes | 100 % |
Substances that must be named in the ingredient list under Annex III of Regulation (EC) 1223/2009, as amended by Regulation (EU) 2023/1545. Where a range was given, the upper bound is shown.
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.