tetrachloroethylene

chemical hydrocarbon

Found in 1 ingredient across the CompKitchen flavor graph.

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

2D Lewis Structure

Formula: C2Cl4
Molecular weight: 165.8 g/mol
PubChem CID: 31373 — full record on PubChem

Properties

Odor threshold — in a food matrix: 2.0 ppb – 42.0 ppb median 22.0 ppb · 2 published values · see all 3 with sources
Volatility: medium
CAS number: 127-18-4

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

3 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

2.0 ppb – 42.0 ppb

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

Threshold	Matrix	Source	Paper
2.0 ppb	water (food: unknown)	Literature corpus	34150682, 40595961, 40761387
42.0 ppb	water (food: fish)	Literature corpus	24594176, 36144849, 37003052

In air

770 ppb

Airborne detection — not comparable to a water threshold.

Threshold	Matrix	Source	Paper
770 ppb	air	Nagata 2003	—

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 (22.0 ppb, the engine's canonical value — see the 3 published values). OAV ≥ 1 = perceptible.

Food	Concentration (ppb)	OAV	Source
fish	38.0	1.73	Corpus paper

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

apricot

fruit

385 cmpds

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