1-Propanol
Athanor · official
C3H8O · 60.1 g/mol
IUPAC name: propan-1-ol
Also called n-propanol, propyl alcohol
Names and identifiers
- IUPAC name
- propan-1-ol
- Synonyms
- n-propanol, propyl alcohol, propanol
+ 36 more
Propyl alcohol, Propan-1-ol, n-Propyl alcohol, ethylcarbinol, optal, osmosol extra, Propylic alcohol, Propanol-1, 1-Propyl alcohol, n-Propan-1-ol, Propanole, Propanolen, Alcohol, propyl, Propanoli, Ethyl carbinol, Alcool propilico, Alcool propylique, Propylowy alkohol, n-Propyl alkohol, Albacol, FEMA No. 2928, Propyl alcohol, normal, FEMA Number 2928, DTXSID2021739, NSC-30300, EPA Pesticide Chemical Code 047502, AI3-16115, 96F264O9SV, UN 1274, DTXCID001739, CHEBI:28831, RefChem:6601, 200-746-9, 1-hydroxypropane, 1-PROPONOL, propane-1-ol
- Molecular formula
- C3H8O
- Empirical formula
- C3H8O
- Molecular weight
- 60.1 g/mol
- Exact mass
- 60.05751
- CAS number
- 71-23-8
- PubChem CID
- 1031
- Canonical SMILES
- CCCO
- Isomeric SMILES
- CCCO
- InChI
- InChI=1S/C3H8O/c1-2-3-4/h4H,2-3H2,1H3
- InChIKey
- BDERNNFJNOPAEC-UHFFFAOYSA-N
- Molfile
Names, InChI and the identifiers from PubChem, retrieved 2026-10-14.
Physical properties
- Appearance
- Colorless liquid.[6]
6 values
From Hazardous Substances Data Bank (HSDB), the most authoritative source here.
Value As written Source – N-propanol appears as a clear colorless liquid with a sharp musty odor like rubbing alcohol. Flash point 53-77 °F. Autoignites at 700 °F. Vapors are heavier than air and mildly irritate the eyes, nose, and throat. Density approximately 6.5 lb / gal. Used in making cosmetics, skin and hair preparations, pharmaceuticals, perfumes, lacquer formulations, dye solutions, antifreezes, rubbing alcohols, soaps, window cleaners, acetone and other chemicals and products. [1] CAMEO Chemicals – Liquid; CBI [2] EPA Chemical Data Reporting (CDR) – CLEAR COLOURLESS LIQUID WITH CHARACTERISTIC ODOUR. [3] ILO-WHO International Chemical Safety Cards (ICSCs) – Colorless liquid with a mild, alcohol-like odor. [4] Occupational Safety and Health Administration (OSHA) – Colorless liquid with a mild, alcohol-like odor. [5] The National Institute for Occupational Safety and Health (NIOSH) –shown Colorless liquid. [6] Hazardous Substances Data Bank (HSDB)cites Lewis, R.J., Sr (Ed.). Hawley's Condensed Chemical Dictionary. 13th ed. New York, NY: John Wiley & Sons, Inc. 1997., p. 932 - Odor
- Similar to ethanol[6]
2 values
From Hazardous Substances Data Bank (HSDB), the most authoritative source here.
Value As written Source –shown Similar to ethanol [6] Hazardous Substances Data Bank (HSDB)cites Lewis, R.J., Sr (Ed.). Hawley's Condensed Chemical Dictionary. 13th ed. New York, NY: John Wiley & Sons, Inc. 1997., p. 932 – Odor perception threshold: <0.07-100 mg/cu-m; odor recognition threshold: 0.32-150 mg/cu m [6] Hazardous Substances Data Bank (HSDB)cites WHO; Environmental Health Criteria 102, 1-Propanol. Geneva, Switzerland: World Health Organization (WHO), International Program on Chemical Safety. pp. 1-57 (1990) - Melting point
- -126.2 °C (-195.2 °F, USCG 1999)[1]
5 values
5 of 5 sources agree on it (most common value).
Value As written Source −126.2 °Cshown -195.2 °F (USCG, 1999) [1] CAMEO Chemicalscites U.S. Coast Guard. 1999. Chemical Hazard Response Information System (CHRIS) - Hazardous Chemical Data. Commandant Instruction 16465.12C. Washington, D.C.: U.S. Government Printing Office. −127 °C -127 °C [3] ILO-WHO International Chemical Safety Cards (ICSCs) −127 °C -196 °F [4] Occupational Safety and Health Administration (OSHA) −127 °C -127 °C [7] PAC Chemical Database, U.S. Department of Energy −127 °C -196 °F [5] The National Institute for Occupational Safety and Health (NIOSH) - Boiling point
- 97.19 °C @760 [mmHg][7]
5 values
5 of 5 sources agree on it (most common value).
Value As written Source 97 °C 207 °F at 760 mmHg (USCG, 1999) [1] CAMEO Chemicalscites U.S. Coast Guard. 1999. Chemical Hazard Response Information System (CHRIS) - Hazardous Chemical Data. Commandant Instruction 16465.12C. Washington, D.C.: U.S. Government Printing Office. 97 °C 97 °C [3] ILO-WHO International Chemical Safety Cards (ICSCs) 97 °C 207 °F [4] Occupational Safety and Health Administration (OSHA) 97.2 °Cshown 97.19 °C @760 [mm Hg] [7] PAC Chemical Database, U.S. Department of Energy 97 °C 207 °F [5] The National Institute for Occupational Safety and Health (NIOSH) - Density
- 0.8044 @25 °C[7]
5 values
5 of 5 sources agree on it (most common value).
Value As written Source – 0.803 at 68 °F (USCG, 1999) - Less dense than water [1] CAMEO Chemicalscites U.S. Coast Guard. 1999. Chemical Hazard Response Information System (CHRIS) - Hazardous Chemical Data. Commandant Instruction 16465.12C. Washington, D.C.: U.S. Government Printing Office. – Relative density (water = 1): 0.8 (20 °C) [3] ILO-WHO International Chemical Safety Cards (ICSCs) – 0.81 [4] Occupational Safety and Health Administration (OSHA) –shown 0.8044 @25 °C [7] PAC Chemical Database, U.S. Department of Energy – 0.81 [5] The National Institute for Occupational Safety and Health (NIOSH) 14 more values were reported but failed the checks (unreadable or out of range), so they are not shown.
- Solubility in water
- Solubility in water: miscible[3]
5 values
From ILO-WHO International Chemical Safety Cards (ICSCs), the most authoritative source here.
Value As written Source – Miscible (NIOSH, 2024) [1] CAMEO Chemicals – MISCIBLE WITH PROPYLENE GLYCOL [6] Hazardous Substances Data Bank (HSDB)cites Fenaroli's Handbook of Flavor Ingredients. Volume 2. Edited, translated, and revised by T.E. Furia and N. Bellanca. 2nd ed. Cleveland: The Chemical Rubber Co., 1975., p. 493 – For more Solubility (Complete) data for N-PROPANOL (6 total), please visit the HSDB record page. [6] Hazardous Substances Data Bank (HSDB) –shown Solubility in water: miscible [3] ILO-WHO International Chemical Safety Cards (ICSCs) – Miscible [5] The National Institute for Occupational Safety and Health (NIOSH) - log P
- 0.25[3]
2 values
2 of 2 sources agree on it (most common value).
Value As written Source – log Kow= 0.25 [6] Hazardous Substances Data Bank (HSDB)cites Hansch, C., Leo, A., D. Hoekman. Exploring QSAR - Hydrophobic, Electronic, and Steric Constants. Washington, DC: American Chemical Society., 1995., p. 7 –shown 0.25 [3] ILO-WHO International Chemical Safety Cards (ICSCs) - pKa
- pKa = 16.10[6]
- Vapor pressure
- 21.0 mmHg @ 25 °C[6]
3 values
Sources disagree; from Hazardous Substances Data Bank (HSDB), the most authoritative.
Value As written Source 21 mmHgshown 21.0 mm Hg @ 25 °C [6] Hazardous Substances Data Bank (HSDB)cites Riddick, J.A., W.B. Bunger, Sakano T.K. Techniques of Chemistry 4th ed., Volume II. Organic Solvents. New York, NY: John Wiley and Sons., 1985., p. 194 15 mmHg Vapor pressure, kPa at 20 °C: 2.0 [3] ILO-WHO International Chemical Safety Cards (ICSCs) 10 mmHg 10 [mm Hg] @14.7 °C [7] PAC Chemical Database, U.S. Department of Energy 3 more values were reported but failed the checks (unreadable or out of range), so they are not shown.
- Flash point
- 23 °C, 74 °F (closed cup)[6]
6 values
3 of 5 sources agree on it (most common value).
Value As written Source 25 °C 77 °F (USCG, 1999) [1] CAMEO Chemicalscites U.S. Coast Guard. 1999. Chemical Hazard Response Information System (CHRIS) - Hazardous Chemical Data. Commandant Instruction 16465.12C. Washington, D.C.: U.S. Government Printing Office. 23 °Cshown 23 °C, 74 °F (closed cup) [6] Hazardous Substances Data Bank (HSDB)cites Fire Protection Guide to Hazardous Materials. 12 ed. Quincy, MA: National Fire Protection Association, 1997., p. 325-81 22 °C 22 °C (open cup) [6] Hazardous Substances Data Bank (HSDB)cites ITII. Toxic and Hazarous Industrial Chemicals Safety Manual. Tokyo, Japan: The International Technical Information Institute, 1982., p. 446 15 °C 15 °C c.c. [3] ILO-WHO International Chemical Safety Cards (ICSCs) 22 °C 72 °F [4] Occupational Safety and Health Administration (OSHA) 22 °C 72 °F [5] The National Institute for Occupational Safety and Health (NIOSH) - Autoignition temperature
- 371 °C[3]
3 values
2 of 3 sources agree on it (most common value).
Value As written Source 371 °C 700 °F (USCG, 1999) [1] CAMEO Chemicalscites U.S. Coast Guard. 1999. Chemical Hazard Response Information System (CHRIS) - Hazardous Chemical Data. Commandant Instruction 16465.12C. Washington, D.C.: U.S. Government Printing Office. 413 °C 775 °F, 412 °C [6] Hazardous Substances Data Bank (HSDB)cites Fire Protection Guide to Hazardous Materials. 12 ed. Quincy, MA: National Fire Protection Association, 1997., p. 325-81 371 °Cshown 371 °C [3] ILO-WHO International Chemical Safety Cards (ICSCs) - Viscosity
- 2.256 cP @ 20 °C[6]
Each value as its source reports it, with the source's number after it (listed under References). Where several sources report a property, the row shows the value most of them agree on, the rule the app uses; open the values to see every one.
Calculated
- Heavy atoms
- 4
- Rings
- 0
- Aromatic rings
- 0
- Fraction sp³ carbons (Fsp3)
- 1
- H-bond donors
- 1
- H-bond acceptors
- 1
- Rotatable bonds
- 1
- TPSA (Ų)
- 20.2
- Formal charge
- 0
- XLogP3
- 0.3 PubChem
- Complexity
- 7 PubChem
- Stereocenters
- None
- Double-bond geometry
- None specified
- Point group
- C1 of one 3D conformer with its hydrogens, by Athanor’s engine (as in the app)
Elemental analysis
- C59.96%
- H13.42%
- O26.62%
Isotope pattern
Each peak is a nominal mass with its abundance-weighted exact mass, as a percentage of the tallest, from IUPAC natural isotope abundances.
Computed from the structure with RDKit 2026.09 when this page was built, beside PubChem's own computed values from its record; where the two differ, both are shown.
Predicted
- log P
- 0.39 Crippen (Wildman and Crippen 1999)
- log S (water solubility)
- -0.39 ESOL (Delaney 2004), log mol/L
- Synthetic accessibility
- 1.96 SA score, 1 easy to 10 hard (Ertl and Schuffenhauer 2009)
Drug-likeness: Lipinski’s rule of five
- Molecular weight ≤ 500: 60.1
- log P ≤ 5 (Crippen): 0.39
- H-bond donors ≤ 5: 1
- H-bond acceptors ≤ 10: 1
Passes all four rules.
¹³C NMR shifts, predicted
Predictions, not measurements; each names its method. A measured log P, where a source reports one, is under Physical properties.
Safety
Danger
Harmonized EU classification (CLP Annex VI). Source [8].
Flammable
Corrosive
Harmful or irritant
- H225Highly Flammable liquid and vapor
- H318Causes serious eye damage
- H336May cause drowsiness or dizziness
Precautionary statements: P210, P233, P240, P241, P242, P243, P261, P264+P265, P271, P280, P303+P361+P353, P304+P340, P305+P354+P338, P317, P319, P370+P378, P403+P233, P403+P235, P405, P501
View all classifications (3)
- [8] Regulation (EC) No 1272/2008 of the European Parliament and of the Council · DangerH225, H318, H336
- [9] European Chemicals Agency (ECHA)This chemical does not meet GHS hazard criteria for < 0.1% (1 of 3950) of reports.
- [9] European Chemicals Agency (ECHA) · 3,950 reports · DangerH302
Exposure limits
- PEL-TWA (8-Hour Time Weighted Average): 200 ppm (500 mg/m³)[4]
- PEL: TWA 200 ppm (500 mg/m3) See Appendix G[5]
- REL-STEL (Short Term Exposure Limit): 250 ppm (625 mg/m³)[4]
- REL: TWA 200 ppm (500 mg/m3) ST 250 ppm (625 mg/m3) [skin][5]
- TLV: 100 ppm as TWA; A4 (not classifiable as a human carcinogen)[3]
- IDLH: 800 ppm (NIOSH, 2024)[1]
First aid
- Excerpt from NIOSH Pocket Guide for n-Propyl alcohol: Eye: Irrigate immediately - If this chemical contacts the eyes, immediately wash (irrigate) the eyes with large amounts of water, occasionally lifting the lower and upper lids. Get medical attention immediately. Skin: Water flush - If this chemical contacts the skin, flush the contaminated skin with water. Where there is evidence of skin irritation, get medical attention. Breathing: Respiratory support - If a person breathes large amounts of this chemical, move the exposed person to fresh air at once.[1]
- General First Aid: · Call 911 or emergency medical service. · Ensure that medical personnel are aware of the material(s) involved, take precautions to protect themselves and avoid contamination. · Move victim to fresh air if it can be done safely. · Administer oxygen if breathing is difficult. · If victim is not breathing: -- DO NOT perform mouth-to-mouth resuscitation; the victim may have ingested or inhaled the substance. -- If equipped and pulse detected, wash face and mouth, then give artificial respiration using a proper respiratory medical device (bag-valve mask, pocket mask equipped…[10]
- General First Aid: · Call 911 or emergency medical service. · Ensure that medical personnel are aware of the material(s) involved, take precautions to protect themselves and avoid contamination. · Move victim to fresh air if it can be done safely. · Administer oxygen if breathing is difficult. · If victim is not breathing: -- DO NOT perform mouth-to-mouth resuscitation; the victim may have ingested or inhaled the substance. -- If equipped and pulse detected, wash face and mouth, then give artificial respiration using a proper respiratory medical device (bag-valve mask, pocket mask equipped…[10]
- (General first aid procedures) Eye: Irrigate immediately - If this chemical contacts the eyes, immediately wash (irrigate) the eyes with large amounts of water, occasionally lifting the lower and upper lids. Get medical attention immediately. Skin: Water flush - If this chemical contacts the skin, flush the contaminated skin with water. Where there is evidence of skin irritation, get medical attention. Breathing: Respiratory support Swallow: Medical attention immediately - If this chemical has been swallowed, get medical attention immediately.[5]
Storage
Incompatibilities
Safety data sheets on the supplier’s page: LGC Standards, Thermo Fisher Scientific, Shenghe Chemical.
Always read the supplier’s safety data sheet before working with it.
Spectra
- NMRHazardous Substances Data Bank (HSDB) · NMRShiftDB
- 1H NMRHuman Metabolome Database (HMDB) (Varian · 500 MHz · Water) · Human Metabolome Database (HMDB) (JEOL · 90 MHz · CDCl3) · Human Metabolome Database (HMDB) (Bruker · D2O) · SpectraBase (BRUKER AC-300)
- 13C NMRHuman Metabolome Database (HMDB) (NEVA · 15.09 MHz · CDCl3) · Human Metabolome Database (HMDB) (Bruker · D2O) · SpectraBase
- 17O NMRSpectraBase
- 1H-13C NMRHuman Metabolome Database (HMDB) (Varian · 500 MHz · Water)
- GC-MSHuman Metabolome Database (HMDB) (EI-B · positive) · Human Metabolome Database (HMDB) (EI-B · positive) · Human Metabolome Database (HMDB) (EI-B · positive) · Human Metabolome Database (HMDB) (EI-B · positive) · Human Metabolome Database (HMDB) (EI-B · positive) · Human Metabolome Database (HMDB) (EI-B · positive)
- MS-MSHuman Metabolome Database (HMDB) (EI-B (HITACHI RMU-6M) · Positive) · Human Metabolome Database (HMDB) (EI-B (HITACHI M-80B) · Positive) · Human Metabolome Database (HMDB) (EI-B (HITACHI RMU-7M) · Positive)
- LC-MSMassBank of North America (MoNA) (Quattro_QQQ · positive) · MassBank of North America (MoNA) (Quattro_QQQ · positive) · MassBank of North America (MoNA) (Quattro_QQQ · positive)
- Other MSHazardous Substances Data Bank (HSDB) · MassBank Europe (HITACHI RMU-6M · EI-B · POSITIVE) · MassBank Europe (HITACHI M-80B · EI-B · POSITIVE) · MassBank Europe (HITACHI RMU-7M · EI-B · POSITIVE)
- UVHazardous Substances Data Bank (HSDB)
- IRHazardous Substances Data Bank (HSDB)
- FTIRSpectraBase (Bio-Rad FTS · Neat (KBr))
- ATR-IRSpectraBase (PerkinElmer SpectrumTwo · ATR-IR)
- Near IRSpectraBase (BRUKER IFS 88 · NIR Spectrometer= INSTRUMENT PARAMETERS=INST=BRUKER,RSN=8963,REO=2,CNM=HEI,ZFF=2)
- Vapor Phase IRSpectraBase (Bruker IFS 85 · Gas-GC)
- RamanSpectraBase (Bruker MultiRAM Stand Alone FT-Raman Spectrometer · FT-Raman)
Experimental spectra held by these sources; each link opens the source's own record.
Literature
Reading PubChem, OpenAlex and GSRS…
Bioactivity
Reading ChEMBL…
References
- [1]CAMEO Chemicals · Public domain (NOAA) · via PubChem · retrieved 2026-10-14
- [2]EPA Chemical Data Reporting (CDR) · Public domain (US EPA) · via PubChem · retrieved 2026-10-14
- [3]ILO-WHO International Chemical Safety Cards (ICSCs) · CC BY 4.0 · via PubChem · retrieved 2026-10-14
- [4]Occupational Safety and Health Administration (OSHA) · Public domain (US DOL) · via PubChem · retrieved 2026-10-14
- [5]The National Institute for Occupational Safety and Health (NIOSH) · Public domain (US CDC) · via PubChem · retrieved 2026-10-14
- [6]Hazardous Substances Data Bank (HSDB) · Public domain (US NLM) · via PubChem · retrieved 2026-10-14
- [7]PAC Chemical Database, U.S. Department of Energy · Public domain (US DOE) · via PubChem · retrieved 2026-10-14
- [8]Regulation (EC) No 1272/2008 of the European Parliament and of the Council · EU reuse policy, CC BY 4.0 · via PubChem · retrieved 2026-10-14
- [9]European Chemicals Agency (ECHA) · ECHA legal notice: reuse with acknowledgement · via PubChem · retrieved 2026-10-14
- [10]Emergency Response Guidebook (ERG) · Public domain (US DOT) · via PubChem · retrieved 2026-10-14
- [11]NMRShiftDB · Linked only · via PubChem · retrieved 2026-10-14
- [12]Human Metabolome Database (HMDB) · Linked only · via PubChem · retrieved 2026-10-14
- [13]SpectraBase · Linked only · via PubChem · retrieved 2026-10-14
- [14]MassBank of North America (MoNA) · CC BY 4.0 · via PubChem · retrieved 2026-10-14
- [15]NIST Mass Spectrometry Data Center · Linked only · via PubChem · retrieved 2026-10-14
- [16]MassBank Europe · Linked only · via PubChem · retrieved 2026-10-14
- ·Calculated values: computed by Athanor with RDKit 2026.09 from the structure.
- ·Literature on PubChem
Data last updated 2026-10-14.
