2-propanediol

Found in 2 ingredients across the CompKitchen flavor graph.

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

Properties

Odor description: odorless, faint
Odor threshold: 60.0 ppb
CAS number: 1128-08-1

Regulatory · United States

FEMA GRAS — Generally Recognized As Safe for flavoring use

? Partial match

FEMA number: 3796
GRAS publication: GRAS 16
FEMA primary name: 3-1-(p-Menthane-3-yloxy)-1.2-propanediol SCLAREOLIDE

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.

chemical FlavorDB 2.0, Flavordb Odor Column 2 sources agree

chemical, fatty, fruity, burnt FlavorDB 2.0

odorless, faint shown above Llm Adjudicated

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fruity, burnt Flavordb Odor Column

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fatty Flavordb Odor Column

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

Where you'd actually smell it

Odor Activity Value = measured concentration ÷ odor threshold (60.0 ppb). OAV ≥ 1 = perceptible.

Food	Concentration (ppb)	OAV	Source
bread	1200.0	20.0 ⚡	—

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 2-propanediol. 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-propanediol in it. Full concentrations are in the OAV table above.

201 cmpds

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Try the pairing tools to see which ingredient combinations rely on 2-propanediol, or compare two ingredients side-by-side.