1-Undecanol
- IUPAC name
- undecan-1-ol
- Molecular formula
- C11H24O
- Molecular weight
- 172.31 g/mol
- Exact mass
- 172.182715385 Da
- XLogP3
- 4.6
- Topological polar surface area
- 20.2 Ų
- Hydrogen-bond donors
- 1
- Hydrogen-bond acceptors
- 1
- Covalent units
- 1
- Defined stereocentres
- 0
Also known as
16 more reported names
External database identifiers
- ChEBI:CHEBI:87499
- ChEMBL:CHEMBL444525
- EPA DTXSID:DTXSID0026915
- PubMed:22967632
- PubMed:22718499
- PubMed:22645504
- PubMed:22541817
- PubMed:22413045
- PubMed:22386254
- PubMed:22265571
- PubMed:22216190
- PubMed:22199113
- PubMed:22174632
- PubMed:22072945
- PubMed:21999983
Evidence from additional scientific databases
NIH PubChem PUG-View
Attributed physical-property, hazard, environmental and use annotations.
- Boiling Point: 473 °F at 760 mmHg (USCG, 1999) Source: CAMEO Chemicals
- Boiling Point: 243 °C at 760 mm Hg Source: Hazardous Substances Data Bank (HSDB)
- Boiling Point: 146.00 °C. @ 30.00 mm Hg Source: Human Metabolome Database (HMDB)
- Boiling Point: 245 °C Source: ILO-WHO International Chemical Safety Cards (ICSCs)
- Boiling Point: 146 °C (30 mm Hg) Source: Joint FAO/WHO Expert Committee on Food Additives (JECFA)
- Color/Form: Colorless liquid Source: Hazardous Substances Data Bank (HSDB)
- Density: 0.835 at 68 °F (USCG, 1999) - Less dense than water; will float Source: CAMEO Chemicals
- Density: 0.8298 at 20 °C/4 °C Source: Hazardous Substances Data Bank (HSDB)
- Density: Relative density (water = 1): 0.83 Source: ILO-WHO International Chemical Safety Cards (ICSCs)
- Density: 0.820-0.840 Source: Joint FAO/WHO Expert Committee on Food Additives (JECFA)
- Flash Point: 200 °F (USCG, 1999) Source: CAMEO Chemicals
- Flash Point: 93.3 °C Source: Haz-Map, Information on Hazardous Chemicals and Occupational Diseases
- Flash Point: Above 82 °C Source: Hazardous Substances Data Bank (HSDB)
- Flash Point: 113 °C Source: ILO-WHO International Chemical Safety Cards (ICSCs)
- LogP: log Kow = 4.72 Source: Hazardous Substances Data Bank (HSDB)
- Melting Point: 60.6 °F (USCG, 1999) Source: CAMEO Chemicals
- Melting Point: 19 °C Source: Hazardous Substances Data Bank (HSDB)
- Melting Point: 19 °C Source: Human Metabolome Database (HMDB)
- Melting Point: 15.9 °C Source: ILO-WHO International Chemical Safety Cards (ICSCs)
- Odor: Citrus Source: Hazardous Substances Data Bank (HSDB)
- Physical Description: 1-undecanol appears as a water-white liquid with a mild odor. Flash point 250 °F. Slightly soluble in water. Considered a marine pollutant by DOT. Immediate steps should be taken to limit its spread to the environment. As a liquid it can easily penetrate the soil and contaminate groundwater or streams. Mildly irritating to both the eyes and skin. Source: CAMEO Chemicals
- Physical Description: Liquid; CBI Source: EPA Chemical Data Reporting (CDR)
- Physical Description: Colorless liquid with a citrus odor; [Hawley] Source: Haz-Map, Information on Hazardous Chemicals and Occupational Diseases
- Physical Description: Colorless liquid; mp = 15.9 deg C; [ICSC] Source: Haz-Map, Information on Hazardous Chemicals and Occupational Diseases
- Physical Description: Liquid Source: Human Metabolome Database (HMDB)
- Physical Description: COLOURLESS LIQUID. Source: ILO-WHO International Chemical Safety Cards (ICSCs)
- Physical Description: colourless liquid/fatty-floral odour Source: Joint FAO/WHO Expert Committee on Food Additives (JECFA)
- Refractive Index: Index of refraction = 1.43918 at 20 °C/D Source: Hazardous Substances Data Bank (HSDB)
- Refractive Index: 1.437-1.443 Source: Joint FAO/WHO Expert Committee on Food Additives (JECFA)
- Solubility: Soluble in ethanol; very soluble in ether Source: Hazardous Substances Data Bank (HSDB)
- Solubility: Soluble in 60% alcohol Source: Hazardous Substances Data Bank (HSDB)
- Solubility: Solubility in water: none Source: ILO-WHO International Chemical Safety Cards (ICSCs)
- Solubility: soluble in most fixed oils; insoluble in water Source: Joint FAO/WHO Expert Committee on Food Additives (JECFA)
- Solubility: 1ml in 4 ml of 60% alcohol (in ethanol) Source: Joint FAO/WHO Expert Committee on Food Additives (JECFA)
- Vapor Pressure: 0.00297 [mmHg] Source: Haz-Map, Information on Hazardous Chemicals and Occupational Diseases
- Viscosity: 17.2 mPa.s at 20 °C Source: Hazardous Substances Data Bank (HSDB)
- First Aid: Wash eyes with water for at least 15 min. (USCG, 1999) Source: CAMEO Chemicals
- Note: This chemical does not meet GHS hazard criteria for 0.2% (3 of 1933) of reports. Source: European Chemicals Agency (ECHA)
- Signal: Warning Source: European Chemicals Agency (ECHA)
- GHS Hazard Statements: H315 (18.6%): Causes skin irritation [Warning Skin corrosion/irritation]; H319 (95.2%): Causes serious eye irritation [Warning Serious eye damage/eye irritation]; H400 (81.7%): Very toxic to aquatic life [Warning Hazardous to the aquatic environment, acute hazard]; H411 (22.6%): Toxic to aquatic life with long lasting effects [Hazardous to the aquatic environment, long-term hazard] Source: European Chemicals Agency (ECHA)
- Precautionary Statement Codes: P264, P264+P265, P273, P280, P302+P352, P305+P351+P338, P321, P332+P317, P337+P317, P362+P364, P391, 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 1933 reports by companies from 17 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.; Reported as not meeting GHS hazard criteria per 3 of 1933 reports by companies.; There are 16 notifications provided by 1930 of 1933 reports by companies with hazard statement code(s).; 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)
- Note: This chemical does not meet GHS hazard criteria for 100% (89 of 89) of all reports. Source: European Chemicals Agency (ECHA)
- GHS Hazard Statements: Not Classified; Reported as not meeting GHS hazard criteria by 89 of 89 companies. For more detailed information, please visit ECHA C&L website. Source: European Chemicals Agency (ECHA)
- ECHA C&L Notifications Summary: Aggregated GHS information provided per 89 reports by companies from 1 notifications to the ECHA C&L Inventory.; Reported as not meeting GHS hazard criteria per 89 of 89 reports by companies.; There are 0 notifications provided by 0 of 89 reports by companies with hazard statement code(s).; 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)
- Signal: Warning Source: NITE-CMC
- GHS Hazard Statements: H315: Causes skin irritation [Warning Skin corrosion/irritation]; H320: Causes eye irritation [Warning Serious eye damage/eye irritation]; H401: Toxic to aquatic life [Hazardous to the aquatic environment, acute hazard]; H411: Toxic to aquatic life with long lasting effects [Hazardous to the aquatic environment, long-term hazard] Source: NITE-CMC
- Precautionary Statement Codes: P264, P264+P265, P273, P280, P302+P352, P305+P351+P338, P321, P332+P317, P337+P317, P362+P364, P391, and P501 (click each P-code to see the statement) Source: NITE-CMC
- Environmental Bioconcentration: An estimated BCF of 86 was calculated for 1-undecanol(SRC), using a log Kow of 4.72(1) and a regression-derived equation(2). According to a classification scheme(3), this BCF suggests the potential for bioconcentration in aquatic organisms is moderate(SRC), provided the compound is not metabolized by the organism(SRC). Source: Hazardous Substances Data Bank (HSDB)
- Environmental Fate: TERRESTRIAL FATE: Based on a classification scheme(1), an estimated Koc value of 8,800(SRC), determined from a log Kow of 4.72(2) and a regression-derived equation(3), indicates that 1-undecanol is expected to be immobile in soil(SRC). Volatilization of 1-undecanol from moist soil surfaces is expected to be an important fate process(SRC) given an estimated Henry's Law constant of 7.3X10-5 atm-cu m/mole(SRC), using a fragment constant estimation method(4). However, adsorption to soil is expected to attenuate volatilization(SRC). 1-Undecanol is not expected to volatilize from dry soil surfaces(SRC) based upon a vapor pressure of 2.97X10-3 mm Hg(5). The theoretical BOD for 1-undecanol was 27.6% after 5-day incubation in sewage(6), indicating that biodegradation may be an important environmental fate process in soil(SRC). Source: Hazardous Substances Data Bank (HSDB)
- Environmental Fate: AQUATIC FATE: Based on a classification scheme(1), an estimated Koc value of 8,800(SRC), determined from a log Kow of 4.72(2) and a regression-derived equation(3), indicates that 1-undecanol is expected to adsorb to suspended solids and sediment(SRC). Volatilization from water surfaces is expected(3) based upon an estimated Henry's Law constant of 7.3X10-5 atm-cu m/mole(SRC), developed using a fragment constant estimation method(4). Using this Henry's Law constant and an estimation method(3), volatilization half-lives for a model river and model lake are 20 hours and 10 days, respectively(SRC). However, volatilization from water surfaces is expected to be attenuated by adsorption to suspended solids and sediment in the water column. The estimated volatilization half-life from a model pond is 9 months if adsorption is considered(5). According to a classification scheme(6), an estimated BCF of 86(SRC), from its log Kow(2) and a regression-derived equation(7), suggests the potential for bioconcentration in aquatic organisms is moderate(SRC). The theoretical BOD for 1-undecanol was 27.6% after 5-day incubation in sewage(8), indicating that biodegradation may be an important environment Source: Hazardous Substances Data Bank (HSDB)
- Environmental Fate: ATMOSPHERIC FATE: According to a model of gas/particle partitioning of semivolatile organic compounds in the atmosphere(1), 1-undecanol, which has a vapor pressure of 2.97X10-3 mm Hg at 25 °C(2), is expected to exist solely as a vapor in the ambient atmosphere. Vapor-phase 1-undecanol is degraded in the atmosphere by reaction with photochemically-produced hydroxyl radicals(SRC); the half-life for this reaction in air is estimated to be 23 hours(SRC), calculated from its rate constant of 1.7X10-11 cu cm/molecule-sec at 25 °C(SRC) that was derived using a structure estimation method(3). Source: Hazardous Substances Data Bank (HSDB)
- Consumer Uses: Intermediate; Not Known or Reasonably Ascertainable Source: EPA Chemical Data Reporting (CDR)
- Industry Uses: Intermediate; Not Known or Reasonably Ascertainable Source: EPA Chemical Data Reporting (CDR)
- Sources/Uses: Used as a synthetic flavoring for food and in perfumes; [HSDB] Source: Haz-Map, Information on Hazardous Chemicals and Occupational Diseases
- Sources/Uses: Used as intermediate for linear phthalate plasticizers and detergent alcohol ethoxylates; [HSDB] Source: Haz-Map, Information on Hazardous Chemicals and Occupational Diseases
- Uses: Food additive-synthetic flavor Source: Hazardous Substances Data Bank (HSDB)
- Uses: Perfumery, flavoring Source: Hazardous Substances Data Bank (HSDB)
- Uses: CHEM INT FOR DIUNDECYL PHTHALATE Source: Hazardous Substances Data Bank (HSDB)
- Uses: CHEM INT FOR LINEAR PHTHALATE PLASTICIZERS-AS C7-C11 MIXT Source: Hazardous Substances Data Bank (HSDB)
- Uses: CHEM INT FOR DETERGENT ALCOHOL ETHOXYLATES-AS C9-C11 MIXT Source: Hazardous Substances Data Bank (HSDB)
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.