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Fragrance allergens / Rose Ketones

Rose Ketones

Rose Ketones must be declared in the EU and Northern Ireland, but it is NOT on the Great Britain list: GB retains the older, shorter list and has not adopted Reg (EU) 2023/1545.

Identity

Name in the ingredient listRose Ketones
CAS / EC numbers43052-87-523726-94-5 / EC 245-845-824720-09-0 / EC 246-430-423696-85-7 / EC 245-833-257378-68-4 / EC 260-709-871048-82-3 / EC 275-156-823726-92-3 / EC 245-843-723726-91-2 / EC 245-842-1
EU Annex III entry157
Group entrySeveral substance forms are declared under this single name.

It predates the 2023 expansion; Reg (EU) 2023/1545 amended its entry (typically regrouping the covered isomer forms).

When it must appear on the label

Rose Ketones may be present as a constituent of essential oils or fragrance compounds. It must be named individually in the ingredient list when its total concentration in the finished product exceeds 0.001% in leave-on products (lotions, balms) or 0.01% in rinse-off products (soap, shower gel), summed across every fragrance source in the recipe. Below the threshold it stays within the collective term "Parfum".

United States: no individual fragrance-allergen labelling is in force yet (MoCRA rulemaking pending); fragrance is declared collectively as "Fragrance".

Common questions

Do I have to list Rose Ketones on my label?

Rose Ketones must be declared in the EU and Northern Ireland, but it is NOT on the Great Britain list: GB retains the older, shorter list and has not adopted Reg (EU) 2023/1545. It must be named individually once it exceeds 0.001% of a leave-on product or 0.01% of a rinse-off product, summed across every fragrance source in the recipe. Below that it stays inside the collective term "Parfum".

What is the CAS number for Rose Ketones?

Rose Ketones is listed under CAS 43052-87-5, 23726-94-5, 24720-09-0, 23696-85-7, 57378-68-4, 71048-82-3, 23726-92-3, 23726-91-2, Annex III entry 157.

Related

Sources

Transcribed from the official texts linked above and source-audited against them; a labelling reference, not safety advice. You remain responsible for your product's compliance.

Rule tables last checked 21 August 2026.