Substance profile
Ethyl Propionate
Ethyl Propionate is a colorless liquid with a reminiscent of rum & pineapple odor.
01 · Identification
What Ethyl Propionate is
Ethyl Propionate is a colorless liquid with a reminiscent of rum & pineapple odor. Its molecular formula is C5H10O2 and its molecular weight is 102.13 g/mol. It boils at 99.2 °C, melts at -73.9 °C, is soluble in water.
Under the GHS it carries the signal word Danger. It is classed as flammable agents - 3rd degree.
02 · Identifiers
Ethyl Propionate identifiers and molecular data
Ethyl Propionate CAS number and EC number
Ethyl Propionate molecular formula and molecular weight
03 · GHS classification
Ethyl Propionate hazard classification
Harmonised classification under CLP Annex VI. This is the legally binding classification in the EU; other jurisdictions may differ.
Ethyl Propionate pictograms and signal word
Ethyl Propionate hazard class and category
| Hazard class | Category | From code | Pictogram |
|---|---|---|---|
| Flammable liquids GHS chapter 2.6 | Category 2 | H225 | GHS02 |
Ethyl Propionate hazard statements (H-codes)
| Code | Hazard statement |
|---|---|
| H225 | Highly flammable liquid and vapour. |
This page lists only the codes assigned to Ethyl Propionate. 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 Ethyl Propionate
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 Ethyl Propionate 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
Ethyl Propionate precautionary statements
CLP Annex VI assigns 5 precautionary statements to Ethyl Propionate. 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.
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
Ethyl Propionate 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 | етилов пропионат |
| Spanish español | Propionato de etilo |
| Czech čeština | ethyl-propanoát |
| Danish dansk | ethylpropionat |
| German Deutsch | Ethylpropionat Propionsäureethylester |
| Estonian eesti | etüülpropionaat |
| Greek ελληνικά | προπιονικός αιθυλεστέρας προπιονικό αιθύλιο |
| English English | ethyl propionate |
| French français | propionate d'éthyle |
| Croatian hrvatski | etil-propionat |
| Italian italiano | propionato di etile |
| Latvian latviešu | etilpropionāts |
| Lithuanian lietuvių | etilpropionatas |
| Hungarian magyar | etil-propionát |
| Maltese Malti | propjonat tal-etil |
| Dutch Nederlands | ethylpropionaat |
| Polish polski | propionian etylu ester etylowy kwasu propionowego |
| Portuguese português | propionato de etilo |
| Romanian română | propionat de etil |
| Slovak slovenčina | etyl-propanoát |
| Slovenian slovenščina | etil propionat |
| Finnish suomi | etyylipropionaatti |
| Swedish svenska | etylpropionat |
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
Ethyl Propionate GHS label elements
Everything CLP Annex VI fixes for Ethyl Propionate, laid out the way it appears on a label. The greyed lines are the parts only the supplier can fill in.
Danger
Ethyl Propionate
- Highly flammable liquid and vapour.
- 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.
- Store in a well-ventilated place.
Supplier name, address and telephone number· Product identifier·Nominal quantity
Need this as an actual label? Open Ethyl Propionate in the GHS label constructor →
07 · Health hazards
Ethyl Propionate health hazards and exposure limits
Ethyl Propionate hazard summary
Flammable liquid; [Hawley] Irritating to skin and eyes; [HSDB] Highly flammable; An eye, nose, and throat irritant; Inhalation of high concentrations can cause CNS depression; [CAMEO] Inhalation can cause CNS depression; [CHEMINFO] Safe when used as a flavoring agent; [JECFA] An irritant; [MSDSonline] See ORGANIC SOLVENTS.
Source: Haz-Map, Information on Hazardous Chemicals and Occupational Diseases
08 · Physical and chemical properties
Ethyl Propionate 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.
Ethyl Propionate boiling point
| Property | Value | Conditions | Source |
|---|---|---|---|
| Boiling point | 99.2 °C (210.6 °F) | HSDB | |
| 98.89 °C (210 °F) | at 760 mmHg | CAMEO | |
| 99 °C (210.2 °F) | at 760 mmHg | DOE PAC |
Ethyl Propionate melting point
| Property | Value | Conditions | Source |
|---|---|---|---|
| Melting point | -73.9 °C (-101 °F) | HSDB | |
| -72.78 °C (-99 °F) | CAMEO | ||
| -72.6 °C (-98.7 °F) | DOE PAC |
Ethyl Propionate density
| Property | Value | Conditions | Source |
|---|---|---|---|
| Density | 0.891 g/cm³ | CAMEO | |
| 0.8917 g/cm³ | at 20 °C | HSDB | |
| 0.891 g/cm³ | at 20 °C | DOE PAC |
Ethyl Propionate solubility
| Property | Value | Conditions | Source |
|---|---|---|---|
| Solubility | SOLUBLE IN MOST ORGANIC SOLVENTS | HSDB | |
| Soluble in alcohol and ether | HSDB | ||
| Miscible in ethanol and ethyl ether; soluble in acetone | HSDB |
Ethyl Propionate vapor pressure
| Property | Value | Conditions | Source |
|---|---|---|---|
| Vapor pressure | 35.8 mmHg | at 25 °C | HSDB |
| 40 mmHg | at 27.2 °C | HSDB |
Ethyl Propionate flash point
| Property | Value | Conditions | Source |
|---|---|---|---|
| Flash point | 12 °C (53.6 °F) | CLOSED CUP | HSDB |
| 12.22 °C (54 °F) | CAMEO |
Ethyl Propionate autoignition temperature
| Property | Value | Conditions | Source |
|---|---|---|---|
| Autoignition temperature | 440 °C (824 °F) | HSDB | |
| 475 °C (887 °F) | CAMEO |
Ethyl Propionate lower explosive limit (LEL)
| Property | Value | Conditions | Source |
|---|---|---|---|
| Lower explosive limit (LEL) | 1.9 % by volume | HSDB | |
| 1.8 % by volume | CAMEO |
Ethyl Propionate upper explosive limit (UEL)
| Property | Value | Conditions | Source |
|---|---|---|---|
| Upper explosive limit (UEL) | 11 % by volume | HSDB |
Ethyl Propionate vapor density
| Property | Value | Conditions | Source |
|---|---|---|---|
| Vapor density | 3.52 (air = 1) | HSDB |
Ethyl Propionate critical temperature and pressure
| Property | Value | Conditions | Source |
|---|---|---|---|
| Critical temperature and pressure | 272.85 °C (523.1 °F) | HSDB |
Values compiled from PubChem Laboratory Chemical Safety Summary. Temperatures converted to Fahrenheit for reference.
09 · Fire and explosion
Ethyl Propionate 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.
Ethyl Propionate fire potential
A flammable liquid. A very dangerous fire and explosion hazard when exposed to heat or flame ...
Source: Hazardous Substances Data Bank (HSDB)
10 · Handling and storage
Ethyl Propionate storage and handling
Ethyl Propionate incompatible materials
... Can react vigorously with oxidizing materials.
Source: Hazardous Substances Data Bank (HSDB)
Ethyl Propionate reactivity
ETHYL PROPIONATE is an ester. Esters react with acids to liberate heat along with alcohols and acids. Strong oxidizing acids may cause a vigorous reaction that is sufficiently exothermic to ignite the reaction products. Heat is also generated by the interaction of esters with caustic solutions. Flammable hydrogen is generated by mixing esters with alkali metals and hydrides. Can react with oxidizing agents, bases, and acids. Polymerization: Will not polymerize (USCG, 1999).
Source: CAMEO Chemicals
Planning storage for a mix of chemicals? Check Ethyl Propionate in the storage compatibility matrix →
11 · Transport
Ethyl Propionate 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.
Ethyl Propionate under UN 1195 — shipping name, class and packing group
Europe · ADR 2025, Table A
| Proper shipping name (3.1.2) | Class | Classification code | PG | Labels (column 5) |
|---|---|---|---|---|
| ETHYL PROPIONATE | 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) |
|---|---|---|---|
| Ethyl propionate | 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
Ethyl Propionate — frequently asked questions
What is the CAS number of Ethyl Propionate?
The CAS number of Ethyl Propionate is 105-37-3. Its EC number is 203-291-4.
What is the chemical formula of Ethyl Propionate?
The molecular formula of Ethyl Propionate is C5H10O2 and its molecular weight is 102.13 g/mol.
What does a Ethyl Propionate label have to show?
Under CLP Annex VI the label for Ethyl Propionate carries the pictogram Flame and the signal word is Danger.
Is Ethyl Propionate flammable?
Yes. CLP Annex VI assigns Ethyl Propionate H225 — highly flammable liquid and vapour. The flash point reported for it is 12 °C (53.6 °F), CLOSED CUP (HSDB).
Is Ethyl Propionate a carcinogen?
CLP Annex VI records no harmonised carcinogenicity classification for Ethyl Propionate. 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 boiling point of Ethyl Propionate?
The boiling point reported for Ethyl Propionate is 99.2 °C (210.6 °F) (HSDB).
What is the melting point of Ethyl Propionate?
The melting point reported for Ethyl Propionate is -73.9 °C (-101 °F) (HSDB).
How should Ethyl Propionate be stored?
CLP Annex VI assigns Ethyl Propionate the storage statement P403.
Nearby
Substances next to Ethyl Propionate
Keep going: substances starting with E, or search the whole database by name, CAS number, pictogram or signal word.