Substance profile
Isopropyl alcohol
Isopropyl alcohol is a colorless liquid with a pleasant odor.
01 · Identification
What Isopropyl alcohol is
Isopropyl alcohol is a colorless liquid with a pleasant odor. Its molecular formula is C3H8O and its molecular weight is 60.1 g/mol. It boils at 82.3 °C, melts at -87.9 °C, is very soluble in water.
Under the GHS it carries the signal word Danger. It is classed as flammable agents - 3rd degree.
02 · Identifiers
Isopropyl alcohol identifiers and molecular data
Isopropyl alcohol CAS number and EC number
Isopropyl alcohol molecular formula and molecular weight
Other names for Isopropyl alcohol
- IPA
- isopropanol
- rubbing alcohol
- 2-propanol
- Alcojel
- Alcosolve
- Alcosolve 2
- Autosept
- Avantin
- Avantine
- Chromar
- Combi-Schutz
- Dimethyl Carbinol
- Dimethylcarbinol
- Hartosol
- 2-Hydroxypropane
- propan-2-ol
03 · GHS classification
Isopropyl alcohol hazard classification
Harmonised classification under CLP Annex VI. This is the legally binding classification in the EU; other jurisdictions may differ.
Isopropyl alcohol pictograms and signal word
Isopropyl alcohol 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 2A | H319 | GHS07 |
| Specific target organ toxicity - single exposure GHS chapter 3.8 | Category 3 narcotic | H336 | GHS07 |
Isopropyl alcohol hazard statements (H-codes)
| Code | Hazard statement |
|---|---|
| H225 | Highly flammable liquid and vapour. |
| H336 | May cause drowsiness or dizziness. |
| H319 | Causes serious eye irritation. |
This page lists only the codes assigned to Isopropyl alcohol. 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 Isopropyl alcohol
Our own Isopropyl alcohol safety data sheet walks through all sixteen sections of the published data. What it is not is the document an inspector asks for: an SDS is issued for a product by its supplier, so the sheet covering the grade actually standing in your store exists only in that supplier’s version. Collecting those and keeping them current as suppliers revise them is a separate job.
04 · Precautionary statements
Isopropyl alcohol precautionary statements
CLP Annex VI assigns 11 precautionary statements to Isopropyl alcohol. 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
Isopropyl alcohol 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-2-ол изопропилов алкохолизопропанол |
| Spanish español | Propan-2-ol alcohol isopropílicoisopropanol |
| Czech čeština | propan-2-ol isopropyl-alkoholisopropanol |
| Danish dansk | propan-2-ol isopropylalkoholisopropanol |
| German Deutsch | 2-Propanol IsopropylalkoholIsopropanol |
| Estonian eesti | propaan-2-ool isopropüülalkoholisopropanool |
| Greek ελληνικά | προπαν-2-όλη ισοπροπυλική αλκοόληισοπροπανόλη |
| English English | propan-2-ol isopropyl alcoholisopropanol |
| French français | propan-2-ol alcool isopropyliqueisopropanol |
| Croatian hrvatski | propan-2-ol izopropil-alkoholizopropanol |
| Italian italiano | propan-2-olo alcool isopropilicoisopropanolo |
| Latvian latviešu | propān-2-ols izopropilspirtsizopropanols |
| Lithuanian lietuvių | propan-2-olis izopropilo alkoholisizopropanolis |
| Hungarian magyar | propán-2-ol izopropil-alkoholizopropanol |
| Maltese Malti | propan-2-ol alkoħol tal-isopropilisopropanol |
| Dutch Nederlands | propaan-2-ol isopropylalcoholisopropanol |
| Polish polski | propan-2-ol alkohol izopropylowyizopropanol |
| Portuguese português | propan-2-ol álcool isopropílicoisopropanol |
| Romanian română | propan-2-ol alcool izopropilicizopropanol |
| Slovak slovenčina | propán-2-ol izopropylalkoholizopropanol |
| Slovenian slovenščina | propan-2-ol izopropil alkoholizopropanol |
| Finnish suomi | propan-2-oli isopropyylialkoholiisopropanoli |
| Swedish svenska | propan-2-ol isopropylalkoholisopropanol |
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
Isopropyl alcohol GHS label elements
Everything CLP Annex VI fixes for Isopropyl alcohol, laid out the way it appears on a label. The greyed lines are the parts only the supplier can fill in.
Danger
Isopropyl alcohol
- Highly flammable liquid and vapour.
- May cause drowsiness or dizziness.
- Causes serious eye irritation.
- 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.
- Wash … thoroughly after handling.
- Wear protective gloves/protective clothing/eye protection/face protection/hearing protection/…
- IF IN EYES:
- Get medical advice/attention.
- If eye irritation persists:
- 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 Isopropyl alcohol in the GHS label constructor →
07 · Health hazards
Isopropyl alcohol health hazards and exposure limits
Isopropyl alcohol hazard summary
Isopropyl alcohol causes narcosis in acute animal studies. [ACGIH] Isopropyl alcohol is not hepatotoxic in experimental animal studies or in human exposures. [Zimmerman, p. 367] A skin, eye, and respiratory tract irritant; Inhalation of high concentrations can cause CNS depression; [ICSC]
Source: Haz-Map, Information on Hazardous Chemicals and Occupational Diseases
Isopropyl alcohol carcinogenicity classification
Evaluation: There is inadequate evidence for the carcinogenicity of isopropanol in humans. There is inadequate evidence for the carcinogenicity of isopropanol in experimental animals. Overall evaluation: Isopropanol is not classifiable as to its carcinogenicity to humans (Group 3).
Source: Hazardous Substances Data Bank (HSDB)
An IARC group and a CLP classification answer different questions. IARC judges whether the evidence for cancer in humans is strong enough; CLP Annex VI is the legally binding EU classification. A substance can carry one and not the other.
Isopropyl alcohol occupational exposure limits
| Limit | Value | Source |
|---|---|---|
| PEL | 400.0 [ppm] | Haz-Map, Information on Hazardous Chemicals and Occupational Diseases |
| PEL | 400 ppm (980 mg/m³) | Occupational Safety and Health Administration (OSHA) |
| PEL | TWA 400 ppm (980 mg/m3) See Appendix G | The National Institute for Occupational Safety and Health (NIOSH) |
| REL | 400 ppm (980 mg/m³) | Occupational Safety and Health Administration (OSHA) |
| REL | 500 ppm (1225 mg/m³) | Occupational Safety and Health Administration (OSHA) |
| REL | TWA 400 ppm (980 mg/m3) ST 500 ppm (1225 mg/m3) | The National Institute for Occupational Safety and Health (NIOSH) |
| IDLH | 2000 ppm ; Based on 10% of the lower explosive limit. (NIOSH, 2024) | CAMEO Chemicals |
| IDLH | 2000.0 [ppm] | Haz-Map, Information on Hazardous Chemicals and Occupational Diseases |
| IDLH | 2000 ppm | Occupational Safety and Health Administration (OSHA) |
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
Isopropyl alcohol 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.
Isopropyl alcohol boiling point
| Property | Value | Conditions | Source |
|---|---|---|---|
| Boiling point | 82.3 °C (180.1 °F) | at 760 mmHg | HSDB |
| 82.78 °C (181 °F) | NIOSH | ||
| 82.5 °C (180.5 °F) | at 760 mmHg | CAMEO |
Isopropyl alcohol melting point
| Property | Value | Conditions | Source |
|---|---|---|---|
| Melting point | -87.9 °C (-126.2 °F) | HSDB | |
| -88.33 °C (-127 °F) | NIOSH | ||
| -88.5 °C (-127.3 °F) | CAMEO |
Isopropyl alcohol density
| Property | Value | Conditions | Source |
|---|---|---|---|
| Density | 0.0008 g/cm³ | HSDB | |
| 0.79 g/cm³ | NIOSH | ||
| 0.7851 g/cm³ | at 25 °C | HSDB |
Isopropyl alcohol solubility
| Property | Value | Conditions | Source |
|---|---|---|---|
| Solubility | Miscible with alcohol, ether, chloroform; insoluble in salt solution | HSDB | |
| Very soluble in benzene | HSDB | ||
| Miscible with most organic solvents | HSDB |
Isopropyl alcohol vapor pressure
| Property | Value | Conditions | Source |
|---|---|---|---|
| Vapor pressure | 33 mmHg | NIOSH | |
| 33 mmHg | at 20 °C | CAMEO | |
| 45.4 mmHg | at 25 °C | HSDB |
Isopropyl alcohol flash point
| Property | Value | Conditions | Source |
|---|---|---|---|
| Flash point | 12 °C (53.6 °F) | Closed cup | HSDB |
| 23.89 °C (75 °F) | HSDB | ||
| 11.67 °C (53 °F) | NIOSH |
Isopropyl alcohol autoignition temperature
| Property | Value | Conditions | Source |
|---|---|---|---|
| Autoignition temperature | 399 °C (750.2 °F) | HSDB | |
| 398.89 °C (750 °F) | CAMEO | ||
| 456 °C (852.8 °F) | ICSC |
Isopropyl alcohol lower explosive limit (LEL)
| Property | Value | Conditions | Source |
|---|---|---|---|
| Lower explosive limit (LEL) | 2 % by volume | NIOSH |
Isopropyl alcohol upper explosive limit (UEL)
| Property | Value | Conditions | Source |
|---|---|---|---|
| Upper explosive limit (UEL) | 12 % by volume | CAMEO | |
| 12.7 % by volume | at 93.33 °C | HSDB |
Isopropyl alcohol vapor density
| Property | Value | Conditions | Source |
|---|---|---|---|
| Vapor density | 2.1 (air = 1) | HSDB | |
| 2.07 (air = 1) | CAMEO |
Isopropyl alcohol odor threshold
| Property | Value | Conditions | Source |
|---|---|---|---|
| Odor threshold | 90 mg/cu m | HSDB | |
| ... MIN CONCN WITH IDENTIFIABLE ODOR ... IS 200 PPM. | HSDB | ||
| Odor threshold 7.84 mg/cu m (low) 490 mg/cu m (high). | HSDB |
Isopropyl alcohol critical temperature and pressure
| Property | Value | Conditions | Source |
|---|---|---|---|
| Critical temperature and pressure | 235.15 °C (455.3 °F) | HSDB |
Isopropyl alcohol corrosivity
| Property | Value | Conditions | Source |
|---|---|---|---|
| Corrosivity | Isopropyl 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
Isopropyl alcohol 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.
Isopropyl alcohol fire potential
A very dangerous fire hazard when exposed to heat, flame or oxidizers.
Source: Hazardous Substances Data Bank (HSDB)
10 · Handling and storage
Isopropyl alcohol storage and handling
Isopropyl alcohol reactive group
CAMEO Chemicals places Isopropyl alcohol in the reactive group Alcohols and Polyols. Compatibility with other chemicals is worked out from the group, not from the individual substance — which is why two substances you have never seen react can still be flagged as a pair that must be separated.
A reactive group is a CAMEO Chemicals (US NOAA) grouping, not a GHS hazard class: it has no code, no category and no legal force. It is what the storage compatibility matrix on this site computes from.
Isopropyl alcohol peroxide formation
B*: Compounds that form peroxides on concentration (distillation/evaporation)
Source: Lab and Research Safety, University of Minnesota
Isopropyl alcohol safe storage
Fireproof. Separated from strong oxidants. Cool. Well closed.
Source: ILO-WHO International Chemical Safety Cards (ICSCs)
Isopropyl alcohol storage conditions
Keep container tightly closed in a dry and well-ventilated place. Store at room temperature in the original container. Sensitive to light. Store in light-resistant containers. Keep away from heat and sources of ignition. Store in a segrated and approved area. Store away from incompatible materials. /Isopropyl Alcohol, Reagent, ACS/
Source: Hazardous Substances Data Bank (HSDB)
Isopropyl alcohol incompatible materials
During distillation of 2-propanol recovered from the reduction of crotonaldehyde with aluminium isopropoxide, a violent explosion occurred. This was attributed either to peroxidized diisopropyl ether (a possible by-product) or to peroxidized crotonaldehyde.
Source: Hazardous Substances Data Bank (HSDB)
Planning storage for a mix of chemicals? Check Isopropyl alcohol in the storage compatibility matrix →
11 · Transport
Isopropyl alcohol 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.
Isopropyl alcohol under UN 1219 — shipping name, class and packing group
Europe · ADR 2025, Table A
| Proper shipping name (3.1.2) | Class | Classification code | PG | Labels (column 5) |
|---|---|---|---|---|
| ISOPROPANOL (ISOPROPYL ALCOHOL) | 3 | F1 | II | |
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) |
|---|---|---|---|
| Isopropanol or Isopropyl alcohol | 3 | II | |
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
Isopropyl alcohol — frequently asked questions
What is the CAS number of Isopropyl alcohol?
The CAS number of Isopropyl alcohol is 67-63-0. Its EC number is 200-661-7.
What is the chemical formula of Isopropyl alcohol?
The molecular formula of Isopropyl alcohol is C3H8O and its molecular weight is 60.1 g/mol.
What does a Isopropyl alcohol label have to show?
Under CLP Annex VI the label for Isopropyl alcohol carries the pictograms Flame and Exclamation mark and the signal word is Danger.
Is Isopropyl alcohol flammable?
Yes. CLP Annex VI assigns Isopropyl alcohol H225 — highly flammable liquid and vapour. The flash point reported for it is 12 °C (53.6 °F), Closed cup (HSDB).
Is Isopropyl alcohol a carcinogen?
CLP Annex VI records no harmonised carcinogenicity classification for Isopropyl alcohol. 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. IARC places it in Group 3: not classifiable as to its carcinogenicity to humans.
What is the exposure limit for Isopropyl alcohol?
The US occupational exposure limit reported for Isopropyl alcohol is 400.0 [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 Isopropyl alcohol?
The boiling point reported for Isopropyl alcohol is 82.3 °C (180.1 °F), at 760 mmHg (HSDB).
What is the melting point of Isopropyl alcohol?
The melting point reported for Isopropyl alcohol is -87.9 °C (-126.2 °F) (HSDB).
How should Isopropyl alcohol be stored?
CLP Annex VI assigns Isopropyl alcohol the storage statement P403. Keep container tightly closed in a dry and well-ventilated place. Store at room temperature in the original container. Sensitive to light. Store in light-resistant containers. Keep away from heat and sources of ignition. Store in a segrated and approved area. Store away from incompatible materials. /Isopropyl Alcohol, Reagent, ACS/ (Hazardous Substances Data Bank (HSDB))
Nearby
Substances next to Isopropyl alcohol
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