Substance profile
Propan-1-ol
Propan-1-ol is a colorless liquid with a similar to ethanol odor.
01 · Identification
What Propan-1-ol is
Propan-1-ol is a colorless liquid with a similar to ethanol odor. Its molecular formula is C3H8O and its molecular weight is 60.1 g/mol. It boils at 97.2 °C, melts at -127 °C, is miscible with water.
Under the GHS it carries the signal word Danger. It is classed as flammable agents - 3rd degree.
02 · Identifiers
Propan-1-ol identifiers and molecular data
Propan-1-ol CAS number and EC number
Propan-1-ol molecular formula and molecular weight
Other names for Propan-1-ol
- n-propanol
03 · GHS classification
Propan-1-ol hazard classification
Harmonised classification under CLP Annex VI. This is the legally binding classification in the EU; other jurisdictions may differ.
Propan-1-ol pictograms and signal word
Propan-1-ol hazard class and category
| Hazard class | Category | From code | Pictogram |
|---|---|---|---|
| Flammable liquids GHS chapter 2.6 | Category 2 | H225 | GHS02 |
| Serious eye damage/eye irritation GHS chapter 3.3 | Category 1 | H318 | GHS05 |
| Specific target organ toxicity - single exposure GHS chapter 3.8 | Category 3 narcotic | H336 | GHS07 |
Propan-1-ol hazard statements (H-codes)
| Code | Hazard statement |
|---|---|
| H225 | Highly flammable liquid and vapour. |
| H336 | May cause drowsiness or dizziness. |
| H318 | Causes serious eye damage. |
This page lists only the codes assigned to Propan-1-ol. The full reference lives on the hazard statements hub, the precautionary statements hub and the GHS pictograms hub.
Safety Data Sheet
Getting an SDS for Propan-1-ol
A Safety Data Sheet is written for a product, not for a substance: the supplier of the grade you actually buy issues it, so two suppliers of Propan-1-ol issue two different sheets. That is why there is no single authoritative SDS for a substance to download — what there is, is the job of collecting the sheets for the products you hold and keeping them current as suppliers revise them.
04 · Precautionary statements
Propan-1-ol precautionary statements
CLP Annex VI assigns 9 precautionary statements to Propan-1-ol. They are grouped the way a label groups them: what to do before handling, what to do when something has already happened, how to store it and how to dispose of it.
Prevention
What to do before and during handling so the hazard never happens.
Response
What to do once exposure, spillage or fire has already happened.
Reading the notation. … is a blank the supplier fills in — not a truncated sentence.· [square brackets] mark a part printed only when it applies.
05 · Names in the regulation
Propan-1-ol name in 23 EU languages
CLP Annex VI Part 3 is published in every language edition of the regulation, and the identification column is written out in each of them. Nothing below is translated by us: each line is the name as that edition prints it. Under Art. 18(2) the substance name from Annex VI is a lawful product identifier, so this is the wording to put on a label going to that market — and where the cell lists several designations, any one of them qualifies.
| Language | Name in CLP Annex VI Part 3 |
|---|---|
| Bulgarian български | пропан-1-ол n -пропанол |
| Spanish español | Propan-1-ol n -propanol |
| Czech čeština | propan-1-ol n -propanol |
| Danish dansk | propan-1-ol n-propanol |
| German Deutsch | Propan-1-ol n -Propanoln-Propylalkohol |
| Estonian eesti | propaan-1-ool n -propanool |
| Greek ελληνικά | προπαν-1-όλη n -προπανόλη |
| English English | propan-1-ol n -propanol |
| French français | propan-1-ol n -propanol |
| Croatian hrvatski | propan-1-ol n -propanol |
| Italian italiano | propan-1-olo n-propanolo |
| Latvian latviešu | propān-1-ols n -propanols |
| Lithuanian lietuvių | propan-1-olis n -propanolis |
| Hungarian magyar | propán-1-ol n -propanol |
| Maltese Malti | propan-1-ol n -propanol |
| Dutch Nederlands | propaan-1-ol n -propanol |
| Polish polski | propan-1-ol n -propanol |
| Portuguese português | propan-1-ol n -propanol |
| Romanian română | propan-1-ol n -propanol |
| Slovak slovenčina | propán-1-ol propanol |
| Slovenian slovenščina | propan-1-ol n -propanol |
| Finnish suomi | propan-1-oli n -propanoli |
| Swedish svenska | propan-1-ol n -propanol |
All 23 language editions of Annex VI carry this entry. Irish is the twenty-fourth official EU language and has no line here for a different reason: no consolidated CLP text has ever been published in Irish, so there is no Irish edition of Annex VI to quote a name from. Source: consolidated CLP, CELEX 02008R1272, language editions. © European Union, https://eur-lex.europa.eu — only the electronic Official Journal of the European Union is authentic.
06 · Label elements
Propan-1-ol GHS label elements
Everything CLP Annex VI fixes for Propan-1-ol, laid out the way it appears on a label. The greyed lines are the parts only the supplier can fill in.
Danger
Propan-1-ol
- Highly flammable liquid and vapour.
- May cause drowsiness or dizziness.
- Causes serious eye damage.
- Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking.
- Keep container tightly closed.
- Use explosion-proof [electrical/ventilating/lighting/…] equipment.
- Use only non-sparking tools.
- Wear protective gloves/protective clothing/eye protection/face protection/hearing protection/…
- IF IN EYES:
- Immediately call a POISON CENTER/doctor/…
- Remove contact lenses, if present and easy to do. Continue rinsing.
- Store in a well-ventilated place.
Supplier name, address and telephone number· Product identifier·Nominal quantity
Need this as an actual label? Open Propan-1-ol in the GHS label constructor →
07 · Health hazards
Propan-1-ol health hazards and exposure limits
Propan-1-ol hazard summary
A mucous membrane irritant similar to isopropyl alcohol, n-propyl alcohol produces narcosis in animals inhaling high concentrations. It causes severe liver injury in chronic feeding studies of laboratory animals. [ACGIH] Irritating to the eyes; Inhalation of high concentrations can cause CNS depression; [ICSC]
Source: Haz-Map, Information on Hazardous Chemicals and Occupational Diseases
Propan-1-ol occupational exposure limits
| Limit | Value | Source |
|---|---|---|
| PEL | 200.0 [ppm] | Haz-Map, Information on Hazardous Chemicals and Occupational Diseases |
| PEL | 200 ppm (500 mg/m³) | Occupational Safety and Health Administration (OSHA) |
| PEL | TWA 200 ppm (500 mg/m3) See Appendix G | The National Institute for Occupational Safety and Health (NIOSH) |
| REL | 200 ppm (500 mg/m³) | Occupational Safety and Health Administration (OSHA) |
| REL | 250 ppm (625 mg/m³) | Occupational Safety and Health Administration (OSHA) |
| REL | TWA 200 ppm (500 mg/m3) ST 250 ppm (625 mg/m3) [skin] | The National Institute for Occupational Safety and Health (NIOSH) |
| IDLH | 800 ppm (NIOSH, 2024) | CAMEO Chemicals |
| IDLH | 800.0 [ppm] | Haz-Map, Information on Hazardous Chemicals and Occupational Diseases |
| IDLH | 800 ppm | Hazardous Substances Data Bank (HSDB) |
These are United States values. The European Union sets its own indicative and binding limits, and the figure that applies at a given workplace is the one in the local regulation — not the one shown here.
08 · Physical and chemical properties
Propan-1-ol properties
Every value is shown with the conditions it was measured under and the source it came from. Where sources disagree, all values are listed rather than one being picked — the difference is usually a different form of the substance, not an error.
Propan-1-ol boiling point
| Property | Value | Conditions | Source |
|---|---|---|---|
| Boiling point | 97.2 °C (207 °F) | HSDB | |
| 97.22 °C (207 °F) | NIOSH | ||
| 97.22 °C (207 °F) | at 760 mmHg | CAMEO |
Propan-1-ol melting point
| Property | Value | Conditions | Source |
|---|---|---|---|
| Melting point | -127 °C (-196.6 °F) | HSDB | |
| -126.67 °C (-196 °F) | NIOSH | ||
| -126.22 °C (-195.2 °F) | CAMEO |
Propan-1-ol density
| Property | Value | Conditions | Source |
|---|---|---|---|
| Density | 0.81 g/cm³ | NIOSH | |
| 0.8053 g/cm³ | at 20 °C | HSDB | |
| 0.2734 g/cm³ | at 25 °C | HSDB |
Propan-1-ol solubility
| Property | Value | Conditions | Source |
|---|---|---|---|
| Solubility | MISCIBLE WITH PROPYLENE GLYCOL | HSDB | |
| > 10% acetone | HSDB | ||
| > 10% benzene | HSDB |
Propan-1-ol vapor pressure
| Property | Value | Conditions | Source |
|---|---|---|---|
| Vapor pressure | 15 mmHg | NIOSH | |
| 44.98 mmHg | CAMEO | ||
| 21 mmHg | at 25 °C | HSDB |
Propan-1-ol flash point
| Property | Value | Conditions | Source |
|---|---|---|---|
| Flash point | 23 °C (73.4 °F) | closed cup | HSDB |
| 22 °C (71.6 °F) | open cup | HSDB | |
| 22.22 °C (72 °F) | NIOSH |
Propan-1-ol autoignition temperature
| Property | Value | Conditions | Source |
|---|---|---|---|
| Autoignition temperature | 412.78 °C (775 °F) | HSDB | |
| 371.11 °C (700 °F) | CAMEO | ||
| 371 °C (699.8 °F) | ICSC |
Propan-1-ol lower explosive limit (LEL)
| Property | Value | Conditions | Source |
|---|---|---|---|
| Lower explosive limit (LEL) | 2.2 % by volume | HSDB | |
| 2.1 % by volume | HSDB |
Propan-1-ol upper explosive limit (UEL)
| Property | Value | Conditions | Source |
|---|---|---|---|
| Upper explosive limit (UEL) | 13.7 % by volume | HSDB | |
| 13.5 % by volume | HSDB |
Propan-1-ol vapor density
| Property | Value | Conditions | Source |
|---|---|---|---|
| Vapor density | 2.1 (air = 1) | HSDB |
Propan-1-ol odor threshold
| Property | Value | Conditions | Source |
|---|---|---|---|
| Odor threshold | 30 ppm | HSDB | |
| 9.00 mg/l (liquid) (detection in water, purity of sample not specified) | HSDB | ||
| 9.00X10-3 mg/l (gas) (detection in air, purity of sample not specified) | HSDB |
Propan-1-ol critical temperature and pressure
| Property | Value | Conditions | Source |
|---|---|---|---|
| Critical temperature and pressure | 263.7 °C (506.7 °F) | HSDB |
Propan-1-ol corrosivity
| Property | Value | Conditions | Source |
|---|---|---|---|
| Corrosivity | Propyl alcohol will attack some forms of plastics, rubber, and coatings. | HSDB |
Values compiled from PubChem Laboratory Chemical Safety Summary. Temperatures converted to Fahrenheit for reference.
09 · Fire and explosion
Propan-1-ol fire and explosion behaviour
These are descriptions rather than measured values, so they are kept out of the table above and quoted here with the source that reported them.
Propan-1-ol fire potential
Dangerous upon exposure to heat or flame; can react vigorously with oxidizing materials.
Source: Hazardous Substances Data Bank (HSDB)
10 · Handling and storage
Propan-1-ol storage and handling
Propan-1-ol peroxide formation
D*: Other compounds that may form peroxides
Source: Lab and Research Safety, University of Minnesota
Propan-1-ol safe storage
Separated from strong oxidants and strong acids. Well closed. Fireproof. Cool. Ventilation along the floor.
Source: ILO-WHO International Chemical Safety Cards (ICSCs)
Propan-1-ol storage conditions
Keep containers closed, store in cool, well ventilated place away from ignition sources.
Source: Hazardous Substances Data Bank (HSDB)
Propan-1-ol incompatible materials
Ignition occurs when potassium tert-butoxide reacts with ... n-propanol ...
Source: Hazardous Substances Data Bank (HSDB)
Propan-1-ol reactivity
N-PROPANOL reacts with alkali metal, nitrides and strong reducing agents to give flammable and/or toxic gases. Reacts with oxoacids and carboxylic acids to form esters plus water. Converted by oxidizing agents to propanal or propionic acid. May initiate the polymerization of isocyanates and epoxides.
Source: CAMEO Chemicals
Planning storage for a mix of chemicals? Check Propan-1-ol in the storage compatibility matrix →
11 · Transport
Propan-1-ol UN number and transport classification
Transport classification is a separate system from the GHS classification above. It decides how a package is marked and how a load may be carried; it does not follow from the workplace label, and the workplace label does not follow from it. The entries below are linked by CAS number, never by name.
Propan-1-ol under UN 1274 — shipping name, class and packing group
Europe · ADR 2025, Table A
| Proper shipping name (3.1.2) | Class | Classification code | PG | Labels (column 5) |
|---|---|---|---|---|
| n-PROPANOL (PROPYL ALCOHOL, NORMAL) | 3 | F1 | II | |
| n-PROPANOL (PROPYL ALCOHOL, NORMAL) | 3 | F1 | III | |
Source: ADR 2025, Table A of Chapter 3.2 · ECE/TRANS/352 Vol. I (UNECE). Class 3 is “Flammable liquids” (ADR 2.1.1.1).
United States · 49 CFR 172.101 Hazardous Materials Table
| Proper shipping name (column 2) | Class or division | PG | Labels (column 6) |
|---|---|---|---|
| n-Propanol or Propyl alcohol, normal | 3 | II | |
| n-Propanol or Propyl alcohol, normal | 3 | III | |
Source: 49 CFR 172.101 Hazardous Materials Table · eCFR, revision 2026-08-03. Class 3 is “Flammable and combustible liquid” (49 CFR 173.2).
12 · Questions
Propan-1-ol — frequently asked questions
What is the CAS number of Propan-1-ol?
The CAS number of Propan-1-ol is 71-23-8. Its EC number is 200-746-9.
What is the chemical formula of Propan-1-ol?
The molecular formula of Propan-1-ol is C3H8O and its molecular weight is 60.1 g/mol.
What does a Propan-1-ol label have to show?
Under CLP Annex VI the label for Propan-1-ol carries the pictograms Flame, Corrosion and Exclamation mark and the signal word is Danger.
Is Propan-1-ol flammable?
Yes. CLP Annex VI assigns Propan-1-ol H225 — highly flammable liquid and vapour. The flash point reported for it is 23 °C (73.4 °F), closed cup (HSDB).
Is Propan-1-ol a carcinogen?
CLP Annex VI records no harmonised carcinogenicity classification for Propan-1-ol. Annex VI is a list of agreed classifications, not a list of substances found safe, so this is an absence of a classification rather than a clean bill of health.
What is the exposure limit for Propan-1-ol?
The US occupational exposure limit reported for Propan-1-ol is 200.0 [ppm] (Haz-Map, Information on Hazardous Chemicals and Occupational Diseases). Limits differ by country: the EU sets its own indicative and binding values, and the figure that applies at a given workplace is the one in the local regulation.
What is the boiling point of Propan-1-ol?
The boiling point reported for Propan-1-ol is 97.2 °C (207 °F) (HSDB).
What is the melting point of Propan-1-ol?
The melting point reported for Propan-1-ol is -127 °C (-196.6 °F) (HSDB).
How should Propan-1-ol be stored?
CLP Annex VI assigns Propan-1-ol the storage statement P403. Keep containers closed, store in cool, well ventilated place away from ignition sources. (Hazardous Substances Data Bank (HSDB))
Nearby
Substances next to Propan-1-ol
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