Nonadecane is a long-chain hydrocarbon that shows up most clearly in rose-otto chemistry and other waxy botanical volatile profiles rather than as a classic high-impact odorant. The strongest accessible evidence supports its identity, repeated occurrence as a compositional marker, and recent fragrance-safety assessment coverage. Direct constituent-specific pharmacology remains sparse, so AromaForge should frame nonadecane mainly as a rose-linked chemistry marker with modest sensory relevance and explicit evidence gaps around standalone mechanism or wellness effects.
Chemical identity and composition
PubChem and the NIST Chemistry WebBook both identify nonadecane as the unbranched C19 alkane C19H40. In aromatic materials it is usually discussed as part of the waxy hydrocarbon fraction rather than as a dominant functional odorant.
Aroma and practical use
- Use the recorded waxy, faint paraffinic, soft hydrocarbon, subtle fatty descriptors to explore a blend's scent character; perceived strength also depends on the other ingredients.
- Read the route, preparation and experimental context before using a study finding to choose an oil.
Reported benefits and effects
Findings retain their study context. An animal or laboratory result describes that experiment.
A 2011 damask rose composition paper reported nonadecane at 4.5-16.0% in Rosa damascena oils from North Indian hills, placing it among the major hydrocarbon components of those samples.
This is useful archive evidence because it ties nonadecane directly to a well-known essential-oil family rather than treating it only as an abstract chemical entry.
This reference does not establish a therapeutic result or a safe use level for a custom oil blend.
A 2026 Food and Chemical Toxicology record documents a dedicated RIFM fragrance ingredient safety assessment for nonadecane, indicating current fragrance-industry toxicology review coverage.
The public abstract does not expose detailed endpoint conclusions in the text retrieved here, so the main reliable takeaway is that nonadecane has active formal safety-review status.
The source assessment applies to its specified exposure and preparation; this entry is not an unrestricted-use clearance.
Use concerns and concentration limits
Sensitization concernNot flagged
Not flagged in the current model. This is not proof of absence or unrestricted safety.
Phototoxicity concernNot flagged
Not flagged in the current model. This is not proof of absence or unrestricted safety.
Oxidation concernNot flagged
Not flagged in the current model. This is not proof of absence or unrestricted safety.
Penetration enhancementNot flagged
Not flagged in the current model. This is not proof of absence or unrestricted safety.
No numeric constituent-specific use limit is available here. Missing is not an unrestricted-use clearance.
The clearest current standalone safety signal is the existence of a 2026 RIFM fragrance ingredient safety assessment for nonadecane, but detailed endpoint conclusions were not available in the abstract text retrieved for this pass.
The source assessment applies to its specified exposure and preparation; this entry is not an unrestricted-use clearance.
No direct public citation is attached to this entry.
No strong human efficacy or therapeutic literature for isolated nonadecane was verified in this pass, so safety and use framing should stay focused on chemistry identity and fragrance-review context.
This reference does not establish a therapeutic result or a safe use level for a custom oil blend.
No direct public citation is attached to this entry.
Constituents it may interact with
No constituent-pair interaction is recorded for this identity. The report does not assume either amplification or incompatibility.
What this report cannot establish
- A reported constituent percentage does not establish an effective human therapeutic dose or the amount absorbed into the body.
- The presence of a constituent does not guarantee a clinical benefit, rash treatment or sleep improvement from a custom blend.
- An unflagged concern or missing use limit does not establish safety for ingestion, inhalation, skin exposure or a particular person.
- A candidate constituent interaction does not establish that two oils amplify one another at the selected proportions.
- Constituent descriptors alone do not establish a precise top, heart or base lifetime in a finished blend.
Known data gaps (6)
- This pass did not verify strong constituent-specific human data for isolated nonadecane.
- Mechanistic bioactivity literature for purified nonadecane was sparse relative to identity and occurrence data.
- The accessible abstract for the 2026 RIFM assessment confirms review coverage but not detailed public endpoint conclusions.
- No dedicated fragrance-use dermal limit percentage was verified; prior placeholder value removed.
- No constituent-specific numeric dermal reference is available here.
- Some findings do not record an explicit exposure route; consult the linked study before applying them to a use.