arachidic acid

sour acid

Found in 36 ingredients across the CompKitchen flavor graph.

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

2D Lewis Structure

Formula: C20H40O2
Molecular weight: 312.5 g/mol
PubChem CID: 10467 — full record on PubChem

Properties

Odor threshold — in a food matrix: 0.190 ppb – 197 ppb median 7.9 ppb · 5 published values · see all 5 with sources
Volatility: low
CAS number: 506-30-9
Retention index: 2382

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

0.190 ppb – 197 ppb

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

Threshold	Matrix	Source	Paper
0.023 ppb	water (food: rum)	Literature corpus	—
Flagged: 343× from the median of this group. Excluded from the range above pending re-check against the source publication — shown rather than hidden.
0.190 ppb	water (food: unknown)	Literature corpus	—
7.9 ppb	water (food: tea)	Literature corpus	—
22.4 ppb	water (food: milk)	Literature corpus	—
197 ppb	water (food: grape)	Literature corpus	—

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 arachidic acid. 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 arachidic acid in it.

120 cmpds

125 cmpds

127 cmpds

216 cmpds