[un.gʷen'taː.ri.us] : a perfumer, maker of perfumes and ointments
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alpha-isomethyl ionone (70% min.)
CAS Number: 127-51-5
The statistical data we collected from 8 public perfume formulas suggests that the mean dose for alpha-isomethyl ionone (70% min.) is 3.5%. The typical lower limit is 2.8%, and the usual higher limit is 4.0%. The highest amount of alpha-isomethyl ionone (70% min.) we encountered in any single formula is 8.8%, and the lowest was 0.70%.
Please note that according to the IFRA Standard Category 4, the level of alpha-isomethyl ionone (70% min.) should not exceed 30% of the final product. Assuming that you will be using your formula for an alcoholic perfume at a 10% dilution, this means you should only use alpha-isomethyl ionone (70% min.) at 300% or less of the formula.
Restriction Limits In The Finished Product (IFRA Amendment 49):