hydroxycitronellal

green aldehyde

Found in 2 ingredients across the CompKitchen flavor graph.

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

2D Lewis Structure

Formula: C10H20O2
Molecular weight: 172.26 g/mol
PubChem CID: 7888 — full record on PubChem

Properties

Odor description: floral, green, lily, melon, sweet, tropical, waxy
Odor threshold: 1414.21 ppb
Volatility: medium
CAS number: 107-75-5
Retention index: 1231

Regulatory · United States

FEMA GRAS — Generally Recognized As Safe for flavoring use

✓ Exact match

FEMA number: None
GRAS publication: GRAS 1
FEMA primary name: Hydroxycitronellal

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

Source: FEMA GRAS publications 1-33. 1 related FEMA record for this name — verify the exact substance for regulatory use.

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.

floral, green, lily, melon, sweet, tropical, waxy shown above FlavorDB 2.0

fresh, refreshing floral and fruity aromas FlavorDB 2.0

floral lily sweet green waxy tropical melon Flavordb Odor Column

—

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 (1414.21 ppb). OAV ≥ 1 = perceptible.

Food	Concentration (ppb)	OAV	Source
lemon	2.5	0.00	—

Concentrations from PubMed Central Open Access papers (free literature corpus, MIT-style licensed). Copper = OAV ≥ 10 (strongly perceptible). Green = OAV ≥ 1 (perceptible).

Thresholds in published tables

Numbers printed in open-access papers, grouped by the medium the table states. Median and full range of the values; “agree” means two or more papers whose middle 80% of values sit within 100×. Not reviewed.

Medium	Median	Range	Values	Papers	Papers agree?
unstated	0.0069 ppb	0.0069–0.0069	1	1	one paper

Found in

Measured impact first, then profile share

Every ingredient known to contain hydroxycitronellal. 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 hydroxycitronellal in it. Full concentrations are in the OAV table above.

63 cmpds

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