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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.
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Restriction Limits In The Finished Product (IFRA Amendment 49):
Category 1
5.4 %
Category 2
1.6 %
Category 3
32 %
Category 4
30 %
Category 5A
7.6 %
Category 5B
7.6 %
Category 5C
7.6 %
Category 5D
7.6 %
Category 6
18 %
Category 7A
61 %
Category 7B
61 %
Category 8
3.2 %
Category 9
59 %
Category 10A
100 %
Category 10B
100 %
Category 11A
100 %
Category 11B
100 %
Category 12
No Restriction
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