tridecanal

green aldehyde

Found in 11 ingredients across the CompKitchen flavor graph.

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

2D Lewis Structure

Formula: C13H26O
Molecular weight: 198.34 g/mol
PubChem CID: 25311 — full record on PubChem

Properties

Odor description: waxy, citrus peel, soapy, fresh
Odor threshold — in a food matrix: 4.0 ppb – 1514 ppb median 64.5 ppb · 4 published values · see all 5 with sources
Volatility: low
CAS number: 10486-19-8
Retention index: 1512

Regulatory · United States

FEMA GRAS — Generally Recognized As Safe for flavoring use

✓ Exact match

FEMA number: 4335
GRAS publication: GRAS 23
FEMA primary name: Tridecanal

Use-level matrix not extracted for this substance — check the source publication for current ppm guidance.

Source: FEMA GRAS publications 1-33.

How this molecule is described

Sources disagree about odour more often than they disagree about chemistry. Rather than show one answer, here is every description on file with how many ingredient records carry it.

Descriptions on file

Ordered by how many independent descriptor streams give each wording, then by how often it appears. The bar is still replication — one source copied onto many ingredients scores high there — so the two can disagree.

flower, sweet, must Flavornet Cas, Flavornet Name, Flavordb Odor Column 3 sources agree

—

aldehydic, citrus, clean, flower, fresh, grapefruit peel, must, petal, soapy, sweet, waxy FlavorDB 2.0

Waxy, characteristic citrus peel FlavorDB 2.0

waxy, citrus peel, soapy, fresh shown above Llm Adjudicated

—

Bars are the share of ingredient records carrying each description. High agreement means the sources replicate each other — not necessarily that they are right.

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

4.0 ppb – 1514 ppb

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

Threshold	Matrix	Source	Paper
4.0 ppb	water (food: soy sauce)	Literature corpus	17898513
21.0 ppb	water (food: tea)	Literature corpus	36540235
108 ppb	water (food: unknown)	Literature corpus	24298981, 34653803, 36651530 +2
1514 ppb	water (food: beef)	Literature corpus	37701748

Other matrix

10.0 ppb

Measured in a non-aqueous medium (oil, starch, cellulose).

Threshold	Matrix	Source	Paper
10.0 ppb	unknown	PMC open access	—

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 (21.033 ppb, the engine's canonical value — see the 5 published values). OAV ≥ 1 = perceptible.

Food	Concentration (ppb)	OAV	Source
tea	60.0	2.85	Corpus paper
beef	57.0	2.71	Corpus paper
soybean sauce	0.3	0.01	—

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 tridecanal. 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 tridecanal in it. Full concentrations are in the OAV table above.

36 cmpds

68 cmpds

152 cmpds

265 cmpds