2,4-pentanedione

fruity ketone

Found in 3 ingredients across the CompKitchen flavor graph.

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

2D Lewis Structure

Formula: C5H8O2
Molecular weight: 100.12 g/mol
PubChem CID: 31261 — full record on PubChem

Properties

Odor threshold — in air: 10.0 ppb 1 published value · see all 1 with sources
Volatility: high
CAS number: 123-54-6

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

1 measured value 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 air

10.0 ppb

Airborne detection — not comparable to a water threshold.

Threshold	Matrix	Source	Paper
10.0 ppb	air (HS_hellman_small)	Cometto-Muñiz (PMC)	—

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.

Found in

Measured impact first, then profile share

Every ingredient known to contain 2,4-pentanedione. 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 2,4-pentanedione in it.

31 cmpds

367 cmpds

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