Iso E Super — regulated under EU Regulation 2023/1545 (expansion of declarable fragrance allergens from 26 to 81+).
Prepared by Allergen81 Compliance Team · Last reviewed September 2026. Provided for information only — always verify against the official regulation and your responsible person's assessment.
CAS Number
54464-57-2
EC Number
259-174-3
INCI Name
TETRAMETHYL ACETYLOCTAHYDRONAPHTHALENES
Status
Declarable
Leave-on products
0.100%
= 10 mg/kg (10 ppm)
Rinse-off products
1.00%
= 100 mg/kg (100 ppm)
Tetramethyl Acetyloctahydronaphthalenes must be separately declared in the ingredient list (INCI) when its concentration in the finished product exceeds these values. Below the threshold, no separate mention is required.
Tetramethyl Acetyloctahydronaphthalenes is typically encountered as an isolated fragrance compound (often synthetic) rather than a constituent of the 30 essential oils in our reference database. Concentration data comes from your supplier's IFRA certificate, COA, or GC/MS report.
Upload your supplier PDFs and Allergen81 extracts every allergen, runs the threshold math (including pre-hapten grouping), and generates your INCI-compliant label.
Under EU Regulation 2023/1545, Tetramethyl Acetyloctahydronaphthalenes must be listed separately in the ingredient declaration (INCI) when its concentration in the finished product exceeds 0.100% in leave-on products or 1.00% in rinse-off products.
Tetramethyl Acetyloctahydronaphthalenes is most commonly encountered as an isolated fragrance compound rather than a natural constituent of the essential oils in our database. Check your supplier documentation for exact levels.