Substance profile
Heptan-3-one
Heptan-3-one is a clear liquid with a green odor.
01 · Identification
What Heptan-3-one is
Heptan-3-one is a clear liquid with a green odor. Its molecular formula is C7H14O and its molecular weight is 114.19 g/mol. It boils at 147 °C, melts at -39 °C.
Under the GHS it carries the signal word Warning. It is classed as flammable agents - 2nd degree.
02 · Identifiers
Heptan-3-one identifiers and molecular data
Heptan-3-one CAS number and EC number
Heptan-3-one molecular formula and molecular weight
Other names for Heptan-3-one
- butyl ethyl ketone
03 · GHS classification
Heptan-3-one hazard classification
Harmonised classification under CLP Annex VI. This is the legally binding classification in the EU; other jurisdictions may differ.
Heptan-3-one pictograms and signal word
Heptan-3-one hazard class and category
| Hazard class | Category | From code | Pictogram |
|---|---|---|---|
| Flammable liquids GHS chapter 2.6 | Category 3 | H226 | GHS02 |
| Acute toxicity - inhalation GHS chapter 3.1 | Category 4 | H332 | GHS07 |
| Serious eye damage/eye irritation GHS chapter 3.3 | Category 2A | H319 | GHS07 |
Heptan-3-one hazard statements (H-codes)
| Code | Hazard statement |
|---|---|
| H226 | Flammable liquid and vapour. |
| H332 | Harmful if inhaled. |
| H319 | Causes serious eye irritation. |
This page lists only the codes assigned to Heptan-3-one. 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 Heptan-3-one
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 Heptan-3-one 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
Heptan-3-one precautionary statements
CLP Annex VI assigns 15 precautionary statements to Heptan-3-one. 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
Heptan-3-one 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 | хептан-3-он бутилетилкетон |
| Spanish español | Heptan-3-ona butiletilcetona |
| Czech čeština | heptan-3-on butyl(ethyl)keton |
| Danish dansk | 3-heptanon ethylbutylketon |
| German Deutsch | Heptan-3-on Butylethylketon |
| Estonian eesti | heptaan-3-oon butüületüülketoon |
| Greek ελληνικά | επταν-3-όνη βουτυλαιθυλοκετόνη |
| English English | heptan-3-one butyl ethyl ketone |
| French français | heptan-3-one butyléthylcétone |
| Croatian hrvatski | heptan-3-on butil-etil-keton |
| Italian italiano | eptan-3-one butiletilchetone |
| Latvian latviešu | heptān-3-ons butiletilketons |
| Lithuanian lietuvių | heptan-3-onas butiletilketonas |
| Hungarian magyar | heptán-3-on butil-etil-keton |
| Maltese Malti | ettan-3-on keton tal-etil tal-butil |
| Dutch Nederlands | heptaan-3-on butylethylketon |
| Polish polski | heptan-3-on keton butylowo-etylowy |
| Portuguese português | heptan-3-ona butiletilcetona |
| Romanian română | 3-heptanonă butil-etil-cetonă |
| Slovak slovenčina | heptán-3-ón butyl(etyl)ketón |
| Slovenian slovenščina | heptan-3-on butil etil keton |
| Finnish suomi | heptan-3-oni butyylietyyliketoni |
| Swedish svenska | heptan-3-on butyletylketon |
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
Heptan-3-one GHS label elements
Everything CLP Annex VI fixes for Heptan-3-one, laid out the way it appears on a label. The greyed lines are the parts only the supplier can fill in.
Warning
Heptan-3-one
- Flammable liquid and vapour.
- Harmful if inhaled.
- 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.
- Do not breathe dust/fume/gas/mist/vapours/spray.
- Wash … thoroughly after handling.
- Use only outdoors or in a well-ventilated area.
- Wear protective gloves/protective clothing/eye protection/face protection/hearing protection/…
- IF INHALED:
- IF IN EYES:
- Call a POISON CENTER/doctor/… if you feel unwell.
- 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 Heptan-3-one in the GHS label constructor →
07 · Health hazards
Heptan-3-one health hazards and exposure limits
Heptan-3-one hazard summary
Inhalation of high concentrations can cause CNS depression; A skin, eye, and respiratory tract irritant; [ICSC]
Source: Haz-Map, Information on Hazardous Chemicals and Occupational Diseases
Heptan-3-one occupational exposure limits
| Limit | Value | Source |
|---|---|---|
| PEL | 50.0 [ppm] | Haz-Map, Information on Hazardous Chemicals and Occupational Diseases |
| PEL | 50 ppm (230 mg/m³) | Occupational Safety and Health Administration (OSHA) |
| PEL | TWA 50 ppm (230 mg/m3) | The National Institute for Occupational Safety and Health (NIOSH) |
| REL | 50 ppm (230 mg/m³) | Occupational Safety and Health Administration (OSHA) |
| REL | TWA 50 ppm (230 mg/m3) | The National Institute for Occupational Safety and Health (NIOSH) |
| IDLH | 1000 ppm (NIOSH, 2024) | CAMEO Chemicals |
| IDLH | 1000.0 [ppm] | Haz-Map, Information on Hazardous Chemicals and Occupational Diseases |
| IDLH | 1000 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
Heptan-3-one 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.
Heptan-3-one boiling point
| Property | Value | Conditions | Source |
|---|---|---|---|
| Boiling point | 147 °C (296.6 °F) | HSDB | |
| 147.78 °C (298 °F) | NIOSH | ||
| 147.22 °C (297 °F) | at 760 mmHg | CAMEO |
Heptan-3-one melting point
| Property | Value | Conditions | Source |
|---|---|---|---|
| Melting point | -39 °C (-38.2 °F) | HSDB | |
| -38.89 °C (-38 °F) | NIOSH |
Heptan-3-one density
| Property | Value | Conditions | Source |
|---|---|---|---|
| Density | 0.8148 g/cm³ | HSDB | |
| 0.82 g/cm³ | NIOSH | ||
| 0.8183 g/cm³ | at 20 °C | HSDB |
Heptan-3-one solubility
| Property | Value | Conditions | Source |
|---|---|---|---|
| Solubility | Slightyl soluble in carbon tetrachloride; miscible in ethanol, ether | HSDB | |
| 1% | NIOSH | ||
| In water, 4.3X10+3 mg/L at 20 °C | at 20 °C | HSDB |
Heptan-3-one vapor pressure
| Property | Value | Conditions | Source |
|---|---|---|---|
| Vapor pressure | 4 mmHg | NIOSH | |
| 2.6 mmHg | at 20 °C | HSDB |
Heptan-3-one flash point
| Property | Value | Conditions | Source |
|---|---|---|---|
| Flash point | 46.11 °C (115 °F) | HSDB |
Heptan-3-one lower explosive limit (LEL)
| Property | Value | Conditions | Source |
|---|---|---|---|
| Lower explosive limit (LEL) | 1.4 % by volume | HSDB |
Heptan-3-one upper explosive limit (UEL)
| Property | Value | Conditions | Source |
|---|---|---|---|
| Upper explosive limit (UEL) | 8.8 % by volume | HSDB |
Heptan-3-one vapor density
| Property | Value | Conditions | Source |
|---|---|---|---|
| Vapor density | 3.93 (air = 1) | HSDB | |
| 3.9 (air = 1) | ICSC |
Heptan-3-one odor threshold
| Property | Value | Conditions | Source |
|---|---|---|---|
| Odor threshold | Odor Threshold Low: 0.1 [ppm] | Haz-Map | |
| Odor Threshold High: 10.0 [ppm] | Haz-Map | ||
| Odor threshold from "Quick Guide: The Electronic NIOSH Pocket Guide to Chemical Hazards" | Haz-Map |
Values compiled from PubChem Laboratory Chemical Safety Summary. Temperatures converted to Fahrenheit for reference.
09 · Fire and explosion
Heptan-3-one 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.
Heptan-3-one fire potential
PROBLEM OF FLAMMABILITY SHOULD NOT BE GREAT UNLESS MATERIAL IS HANDLED @ ELEVATED TEMP.
Source: Hazardous Substances Data Bank (HSDB)
10 · Handling and storage
Heptan-3-one storage and handling
Heptan-3-one peroxide formation
D*: Other compounds that may form peroxides
Source: Lab and Research Safety, University of Minnesota
Heptan-3-one safe storage
Fireproof.
Source: ILO-WHO International Chemical Safety Cards (ICSCs)
Heptan-3-one storage conditions
Prior to working with this chemical you should be trained on its proper handling and storage. Ethyl butyl ketone must be stored to avoid contact with oxidizers such as peroxides, chlorates, perchlorates, permanganates, and nitrates, because violent reactions occur. Store in tightly closed containers in a cool, well-ventilated area away form heat. Sources of ignition such as smoking and open flames are prohibited where ethyl butyl ketone is used, handled, or stored in a manner that could create a potential fire or explosion hazard.
Source: Hazardous Substances Data Bank (HSDB)
Heptan-3-one incompatible materials
Forms explosive mixture with air. Violent reaction with strong oxidizers, acetaldehyde, perchloric acid. Attacks some plastics, rubber, and coatings.
Source: Hazardous Substances Data Bank (HSDB)
Heptan-3-one reactivity
ETHYL BUTYL KETONE is reactive with many acids and bases liberating heat and flammable gases (e.g., H2). The amount of heat may be sufficient to start a fire in the unreacted portion. Reacts with reducing agents such as hydrides, alkali metals, and nitrides to produce flammable gas (H2) and heat. Incompatible with isocyanates, aldehydes, cyanides, peroxides, and anhydrides. May react violently with aldehydes, HNO3, HNO3 + H2O2, and HClO4. Irritating vapors and toxic gases may be formed when involved in fire (USCG, 1999).
Source: CAMEO Chemicals
Planning storage for a mix of chemicals? Check Heptan-3-one in the storage compatibility matrix →
11 · Questions
Heptan-3-one — frequently asked questions
What is the CAS number of Heptan-3-one?
The CAS number of Heptan-3-one is 106-35-4. Its EC number is 203-388-1.
What is the chemical formula of Heptan-3-one?
The molecular formula of Heptan-3-one is C7H14O and its molecular weight is 114.19 g/mol.
What does a Heptan-3-one label have to show?
Under CLP Annex VI the label for Heptan-3-one carries the pictograms Flame and Exclamation mark and the signal word is Warning.
Is Heptan-3-one flammable?
Yes. CLP Annex VI assigns Heptan-3-one H226 — flammable liquid and vapour. The flash point reported for it is 46.11 °C (115 °F) (HSDB).
Is Heptan-3-one a carcinogen?
CLP Annex VI records no harmonised carcinogenicity classification for Heptan-3-one. 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 Heptan-3-one?
The US occupational exposure limit reported for Heptan-3-one is 50.0 [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 Heptan-3-one?
The boiling point reported for Heptan-3-one is 147 °C (296.6 °F) (HSDB).
What is the melting point of Heptan-3-one?
The melting point reported for Heptan-3-one is -39 °C (-38.2 °F) (HSDB).
How should Heptan-3-one be stored?
CLP Annex VI assigns Heptan-3-one the storage statement P403. Prior to working with this chemical you should be trained on its proper handling and storage. Ethyl butyl ketone must be stored to avoid contact with oxidizers such as peroxides, chlorates, perchlorates, permanganates, and nitrates, because violent reactions occur. Store in tightly closed containers in a cool, well-ventilated area away form heat. Sources of ignition such as smoking and open flames are prohibited where ethyl butyl ketone is used, handled, or stored in a manner that could create a potential fire or explosion hazard. (Hazardous Substances Data Bank (HSDB))
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