pentacosane

woody hydrocarbon

Found in 10 ingredients across the CompKitchen flavor graph.

Look up another compound — search by name, CAS number, PubChem CID, or FEMA #.

2D Lewis Structure

Formula: C25H52
Molecular weight: 352.7 g/mol
PubChem CID: 12406 — full record on PubChem

Properties

Odor threshold — in a food matrix: 1.6 ppb – 33.0 ppb median 2.8 ppb · 5 published values · see all 5 with sources
Volatility: low
CAS number: 629-99-2
Retention index: 2500

Not in FEMA GRAS publications 1-33. Of 3,367 listed flavoring substances, none match this compound name. May still be food-safe under other regulatory routes (FDA 21 CFR 172, EFSA, JECFA) — check femaflavor.org for the authoritative current list.

Published thresholds

5 measured values from the literature. Grouped by what was actually measured — a threshold smelled in clean water, tasted in the mouth, or measured in a real food are three different quantities and are not pooled.

In a food matrix

1.6 ppb – 33.0 ppb

Measured in a real food, where the matrix shifts detection — not a clean-water value.

Threshold	Matrix	Source	Paper
0.008 ppb	water (food: tea)	Literature corpus	36540235
Flagged: 356× from the median of this group. Excluded from the range above pending re-check against the source publication — shown rather than hidden.
1.6 ppb	water (food: unknown)	Literature corpus	22391602, 23285821, 23497569 +10
2.8 ppb	water (food: tomato)	Literature corpus	27128659
26.4 ppb	water (food: beer)	Literature corpus	35292687
33.0 ppb	water (food: soy sauce)	Literature corpus	17898513

Only values we can attribute are listed. Where a compendium's licence does not permit public attribution its figures are omitted here, so every number on this page traces to a citable source.

Where you'd actually smell it

Odor Activity Value = measured concentration ÷ odor threshold (2.81 ppb, the engine's canonical value — see the 5 published values). OAV ≥ 1 = perceptible.

Food	Concentration (ppb)	OAV	Source
potentillae argenteae herba	25000.0	8897 ⚡	—
beer	34.0	12.1 ⚡	—
tea	27.9	9.92	—
soybean sauce	0.7	0.25	—
tomato	0.7	0.24	—

Concentrations from PubMed Central Open Access papers (free literature corpus, MIT-style licensed). Copper = OAV ≥ 10 (strongly perceptible). Green = OAV ≥ 1 (perceptible).

Found in

Measured impact first, then profile share

Every ingredient known to contain pentacosane. Ingredients with a measured concentration come first, ranked by odour activity; the rest follow by how large a share of that ingredient's profile this molecule is. The figure beside each is how many different compounds that ingredient has in total — not the concentration of pentacosane in it. Full concentrations are in the OAV table above.

48 cmpds

278 cmpds

302 cmpds

304 cmpds