Undecanal
Undecanal is a saturated fatty aldehyde formally arising from reduction of the carboxylic acid group of undecanoic acid. It is a component of essential oils from citrus plants like Citrus reticulata. It has a role as a volatile oil component, an antimycobacterial drug and a plant metabolite. It is a n-alkanal, a saturated fatty aldehyde and a medium-chain fatty aldehyde. It is a tautomer of an undec-1-en-1-ol. — ChEBI
- IUPAC name
- undecanal
- Molecular formula
- C11H22O
- Molecular weight
- 170.29 g/mol
- Exact mass
- 170.167065321 Da
- XLogP3
- 4.3
- Topological polar surface area
- 17.1 Ų
- Hydrogen-bond donors
- 0
- Hydrogen-bond acceptors
- 1
- Covalent units
- 1
- Defined stereocentres
- 0
Also known as
16 more reported names
External database identifiers
- ChEBI:CHEBI:46202
- ChEMBL:CHEMBL1236576
- EPA DTXSID:DTXSID4021688
- PubMed:27965148
- PubMed:22797778
- PubMed:22480383
- PubMed:22354039
- PubMed:22208224
- PubMed:22188439
- PubMed:21915187
- PubMed:21548958
- PubMed:21548633
- PubMed:21454470
- PubMed:21429630
- PubMed:21268613
Evidence from additional scientific databases
NIH PubChem PUG-View
Attributed physical-property, hazard, environmental and use annotations.
- Boiling Point: 109.00 to 115.00 °C. @ 5.00 mm Hg Source: Human Metabolome Database (HMDB)
- Boiling Point: 223 °C Source: Joint FAO/WHO Expert Committee on Food Additives (JECFA)
- Density: 0.825-0.832 Source: Joint FAO/WHO Expert Committee on Food Additives (JECFA)
- Melting Point: -4 °C Source: Human Metabolome Database (HMDB)
- Physical Description: Liquid; CBI Source: EPA Chemical Data Reporting (CDR)
- Physical Description: Liquid; [EPA ChAMP: Hazard Characterization] Clear colorless liquid; [Sigma-Aldrich MSDS] Source: Haz-Map, Information on Hazardous Chemicals and Occupational Diseases
- Physical Description: Liquid Source: Human Metabolome Database (HMDB)
- Physical Description: colourless to slightly yellow liquid/sweet, fatty, floral odour Source: Joint FAO/WHO Expert Committee on Food Additives (JECFA)
- Refractive Index: 1.430-1.435 Source: Joint FAO/WHO Expert Committee on Food Additives (JECFA)
- Solubility: soluble in most fixed oils, propylene glycol; insoluble in glycerol, water Source: Joint FAO/WHO Expert Committee on Food Additives (JECFA)
- Solubility: 1 ml in 5 ml of 70% alcohol (in ethanol) Source: Joint FAO/WHO Expert Committee on Food Additives (JECFA)
- Vapor Pressure: 0.06 [mmHg] Source: Haz-Map, Information on Hazardous Chemicals and Occupational Diseases
- Signal: Warning Source: European Chemicals Agency (ECHA)
- GHS Hazard Statements: H315 (84%): Causes skin irritation [Warning Skin corrosion/irritation]; H412 (15.8%): Harmful to aquatic life with long lasting effects [Hazardous to the aquatic environment, long-term hazard] Source: European Chemicals Agency (ECHA)
- Precautionary Statement Codes: P264, P273, P280, P302+P352, P321, P332+P317, P362+P364, and P501 (click each P-code to see the statement) Source: European Chemicals Agency (ECHA)
- ECHA C&L Notifications Summary: Aggregated GHS information provided per 1877 reports by companies from 15 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.; Information may vary between notifications depending on impurities, additives, and other factors. The percentage value in parenthesis indicates the notified classification ratio from companies that provide hazard codes. Only hazard codes with percentage values above 10% are shown. For more detailed information, please visit ECHA C&L website. Source: European Chemicals Agency (ECHA)
- Consumer Uses: Fragrance Source: EPA Chemical Data Reporting (CDR)
- Industry Uses: Intermediate; Fragrance Source: EPA Chemical Data Reporting (CDR)
- Sources/Uses: Used as flavoring agent or adjuvant; [FDA] Source: Haz-Map, Information on Hazardous Chemicals and Occupational Diseases
Mapped by: Existing checksum-valid CAS to unique PubChem CID match. Retrieved: 2026-08-31. Open source record
Scientific classifications and hazard annotations provide context and do not replace the market-specific regulatory decision shown above.
Additional source coverage and match status
| Source | Result | Checked |
|---|---|---|
| NIH PubChem PUG-View | Exact match | 2026-08-31 |
A recorded no-match is useful evidence that the source was checked; it is not a claim that the substance does not exist elsewhere.
Retrieved from NIH PubChem on 2026-08-31 by checksum-valid CAS matching. Chemical properties do not replace the regulatory decision on this page.