Substance profile
2-aminoethanol
2-aminoethanol is colorless, viscous liquid or solid (below 51 °F) with an unpleasant, ammonia-like odor.
01 · Identification
What 2-aminoethanol is
2-aminoethanol is colorless, viscous liquid or solid (below 51 °F) with an unpleasant, ammonia-like odor. Its molecular formula is C2H7NO and its molecular weight is 61.08 g/mol. It boils at 170 °C, melts at 10.4 °C.
Under the GHS it carries the signal word Danger. It is classed as corrosives.
02 · Identifiers
2-aminoethanol identifiers and molecular data
2-aminoethanol CAS number and EC number
2-aminoethanol molecular formula and molecular weight
Other names for 2-aminoethanol
- ethanolamine
03 · GHS classification
2-aminoethanol hazard classification
Harmonised classification under CLP Annex VI. This is the legally binding classification in the EU; other jurisdictions may differ.
2-aminoethanol pictograms and signal word
2-aminoethanol hazard class and category
| Hazard class | Category | From code | Pictogram |
|---|---|---|---|
| Acute toxicity - oral GHS chapter 3.1 | Category 4 | H302 | GHS07 |
| Acute toxicity - dermal GHS chapter 3.1 | Category 4 | H312 | GHS07 |
| Acute toxicity - inhalation GHS chapter 3.1 | Category 4 | H332 | GHS07 |
| Skin corrosion/irritation GHS chapter 3.2 | Category 1A or 1B or 1C | H314 | GHS05 |
Where two values are shown with “or”, the hazard statement is shared by more than one category or by more than one class, and the code alone does not say which. H272, for example, belongs to oxidising liquids and to oxidising solids — the physical state decides. The binding answer for a specific entry is in the CLP Annex VI table itself.
2-aminoethanol hazard statements (H-codes)
| Code | Hazard statement |
|---|---|
| H332 | Harmful if inhaled. |
| H312 | Harmful in contact with skin. |
| H302 | Harmful if swallowed. |
| H314 | Causes severe skin burns and eye damage. |
This page lists only the codes assigned to 2-aminoethanol. 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 2-aminoethanol
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 2-aminoethanol 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
2-aminoethanol precautionary statements
CLP Annex VI assigns 12 precautionary statements to 2-aminoethanol. 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
2-aminoethanol 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 | 2-аминоетанол етаноламин |
| Spanish español | 2-Aminoetanol etanolamina |
| Czech čeština | 2-aminoethan-1-ol ethanolamin |
| Danish dansk | 2-aminoethanol ethanolamin |
| German Deutsch | 2-Aminoethanol Ethanolamin |
| Estonian eesti | 2-aminoetanool etanoolamiin |
| Greek ελληνικά | 2-αμινοαιθανόλη αιθανολαμίνη |
| English English | 2-aminoethanol ethanolamine |
| French français | 2-aminoéthanol éthanolamine |
| Croatian hrvatski | 2-aminoetanol etanolamin |
| Italian italiano | 2-aminoetanolo etanolamina |
| Latvian latviešu | 2-aminoetanols etanolamīns |
| Lithuanian lietuvių | 2-aminoetanolis etanolaminas |
| Hungarian magyar | 2-aminoetanol etanolamin |
| Maltese Malti | 2-amminoetanol etanolammina |
| Dutch Nederlands | 2-aminoëthanol ethanolamine |
| Polish polski | 2-aminoetanol etanoloamina |
| Portuguese português | 2-aminoetanol etanolamina |
| Romanian română | 2-aminoetanol etanolamină |
| Slovak slovenčina | 2-aminoetanol etanolamín |
| Slovenian slovenščina | 2-aminoetanol etanolamin |
| Finnish suomi | 2-aminoetanoli etanoliamiini |
| Swedish svenska | 2-aminoetanol etanolamin |
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
2-aminoethanol GHS label elements
Everything CLP Annex VI fixes for 2-aminoethanol, laid out the way it appears on a label. The greyed lines are the parts only the supplier can fill in.
Danger
2-aminoethanol
- Harmful if inhaled.
- Harmful in contact with skin.
- Harmful if swallowed.
- Causes severe skin burns and eye damage.
- Do not breathe dust/fume/gas/mist/vapours/spray.
- Do not eat, drink or smoke when using this product.
- Use only outdoors or in a well-ventilated area.
- Wear protective gloves/protective clothing/eye protection/face protection/hearing protection/…
- IF SWALLOWED:
- IF ON SKIN:
- IF INHALED:
- Immediately call a POISON CENTER/doctor/…
- Call a POISON CENTER/doctor/… if you feel unwell.
- Rinse mouth.
- Do NOT induce vomiting.
- Wash with plenty of water/…
Supplier name, address and telephone number· Product identifier·Nominal quantity
Need this as an actual label? Open 2-aminoethanol in the GHS label constructor →
07 · Health hazards
2-aminoethanol health hazards and exposure limits
2-aminoethanol hazard summary
Liquid causes first degree burns on short exposure; [CHRIS] Ethanolamine is a skin irritant. [Quick CPC] Occupational asthma reported in hairdressers; [Malo] Toxic to the liver in subchronic inhalation studies of animals; [ACGIH] It is an irritant, but allergic contact dermatitis has been reported. [Kanerva, p. 1817] A skin, eye, and respiratory tract irritant; Inhalation of high concentrations can cause CNS depression; Can cause skin sensitization; [ICSC] Danger of skin sensitization; [MAK]
Source: Haz-Map, Information on Hazardous Chemicals and Occupational Diseases
2-aminoethanol occupational exposure limits
| Limit | Value | Source |
|---|---|---|
| PEL | 3.0 [ppm] | Haz-Map, Information on Hazardous Chemicals and Occupational Diseases |
| PEL | 3 ppm (6 mg/m³) | Occupational Safety and Health Administration (OSHA) |
| PEL | TWA 3 ppm (6 mg/m3) See Appendix G | The National Institute for Occupational Safety and Health (NIOSH) |
| REL | 3 ppm (8 mg/m³) | Occupational Safety and Health Administration (OSHA) |
| REL | 6 ppm (15 mg/m³) | Occupational Safety and Health Administration (OSHA) |
| REL | TWA 3 ppm (8 mg/m3) ST 6 ppm (15 mg/m3) | The National Institute for Occupational Safety and Health (NIOSH) |
| IDLH | 30 ppm (NIOSH, 2024) | CAMEO Chemicals |
| IDLH | 30.0 [ppm] | Haz-Map, Information on Hazardous Chemicals and Occupational Diseases |
| IDLH | 30 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
2-aminoethanol 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.
2-aminoethanol boiling point
| Property | Value | Conditions | Source |
|---|---|---|---|
| Boiling point | 170.3 °C (338.5 °F) | HSDB | |
| 170.56 °C (339 °F) | NIOSH | ||
| 170 °C (338 °F) | at 760 mmHg | CAMEO |
2-aminoethanol melting point
| Property | Value | Conditions | Source |
|---|---|---|---|
| Melting point | 10.4 °C (50.7 °F) | HSDB | |
| 10.56 °C (51 °F) | NIOSH | ||
| 10.28 °C (50.5 °F) | CAMEO |
2-aminoethanol density
| Property | Value | Conditions | Source |
|---|---|---|---|
| Density | 1.02 g/cm³ | NIOSH | |
| 1.018 g/cm³ | at 20 °C | HSDB | |
| 1.016 g/cm³ | at 20 °C | CAMEO |
2-aminoethanol solubility
| Property | Value | Conditions | Source |
|---|---|---|---|
| Solubility | Miscible with ethanol, glycerol; soluble in chloroform; slightly soluble in ether, ligroin | HSDB | |
| In water, 1X10+6 mg/L at 25 °C (miscible) | at 25 °C | HSDB |
2-aminoethanol vapor pressure
| Property | Value | Conditions | Source |
|---|---|---|---|
| Vapor pressure | 0.4 mmHg | NIOSH | |
| 0.4 mmHg | at 20 °C | CAMEO | |
| 0.404 mmHg | at 25 °C | HSDB |
2-aminoethanol flash point
| Property | Value | Conditions | Source |
|---|---|---|---|
| Flash point | 86 °C (186.8 °F) | HSDB | |
| 85 °C (185 °F) | HSDB | ||
| 85.56 °C (186 °F) | NIOSH |
2-aminoethanol autoignition temperature
| Property | Value | Conditions | Source |
|---|---|---|---|
| Autoignition temperature | 410 °C (770 °F) | HSDB |
2-aminoethanol lower explosive limit (LEL)
| Property | Value | Conditions | Source |
|---|---|---|---|
| Lower explosive limit (LEL) | 5.5 % by volume | CAMEO |
2-aminoethanol upper explosive limit (UEL)
| Property | Value | Conditions | Source |
|---|---|---|---|
| Upper explosive limit (UEL) | 23.5 % by volume | NIOSH | |
| 17 % by volume | CAMEO |
2-aminoethanol vapor density
| Property | Value | Conditions | Source |
|---|---|---|---|
| Vapor density | 2.1 (air = 1) | HSDB |
2-aminoethanol odor threshold
| Property | Value | Conditions | Source |
|---|---|---|---|
| Odor threshold | 50% detection: 3-4 ppm; detection: 7.5-10 mg/m3 | HSDB | |
| Odor Threshold Low: 2.6 [ppm] | Haz-Map |
2-aminoethanol critical temperature and pressure
| Property | Value | Conditions | Source |
|---|---|---|---|
| Critical temperature and pressure | 397.85 °C (748.1 °F) | HSDB |
Values compiled from PubChem Laboratory Chemical Safety Summary. Temperatures converted to Fahrenheit for reference.
09 · Fire and explosion
2-aminoethanol 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.
2-aminoethanol fire potential
Combustible liquid.
Source: Hazardous Substances Data Bank (HSDB)
Solubility
Miscible with methanol, acetone, glycerin; solubility at 25 °C: in benzene: 1.4%, in ether: 2.1%, in carbon tetrachloride: 0.2%, in n-heptane: less than 0.1%. Immiscible with ether, solvent hexane, fixed oils, although it dissolves many essential oils
Source: HSDB
Odor
Water odor threshold: 20000 mg/L at pKa of 9.5. Air odor threshold: 2.6 ppm. Odor Safety Class: C. C= Odor safety factor from 1-26. Less than 50% of distracted persons perceive warning of TLV.
Source: HSDB
10 · Handling and storage
2-aminoethanol storage and handling
2-aminoethanol safe storage
Separated from strong oxidants, strong acids, aluminium and food and feedstuffs. Dry. Ventilation along the floor. Store in an area without drain or sewer access.
Source: ILO-WHO International Chemical Safety Cards (ICSCs)
2-aminoethanol storage conditions
Keep container tightly closed in a dry and well-ventilated place. Containers which are opened must be carefully resealed and kept upright to prevent leakage. Hygroscopic. Handle and store under inert gas.
Source: Hazardous Substances Data Bank (HSDB)
2-aminoethanol incompatible materials
Incompatible materials: Strong acids and oxidizing agents, iron, copper, brass, rubber.
Source: Hazardous Substances Data Bank (HSDB)
2-aminoethanol reactivity
ETHANOLAMINE is a base. Reacts with organic acids (acetic acid, acrylic acid), inorganic acids (hydrochloric acid, hydrofluoric acid, nitric acid, sulfuric acid, chlorosulfonic acid), acetic anhydride, acrolein, acrylonitrile, cellulose, epichlorohydrin, mesityl oxide, beta-propiolactone, vinyl acetate. Emits toxic fumes of nitrogen oxides when heated to decomposition [Sax, 9th ed., 1996, p. 1498].
Source: CAMEO Chemicals
Planning storage for a mix of chemicals? Check 2-aminoethanol in the storage compatibility matrix →
11 · Transport
2-aminoethanol 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.
2-aminoethanol under UN 2491 — shipping name, class and packing group
Europe · ADR 2025, Table A
| Proper shipping name (3.1.2) | Class | Classification code | PG | Labels (column 5) |
|---|---|---|---|---|
| ETHANOLAMINE or ETHANOLAMINE SOLUTION | 8 | C7 | III | |
Source: ADR 2025, Table A of Chapter 3.2 · ECE/TRANS/352 Vol. I (UNECE). Class 8 is “Corrosive substances” (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) |
|---|---|---|---|
| Ethanolamine or Ethanolamine solutions | 8 | III | |
Source: 49 CFR 172.101 Hazardous Materials Table · eCFR, revision 2026-08-03. Class 8 is “Corrosive material” (49 CFR 173.2).
12 · Questions
2-aminoethanol — frequently asked questions
What is the CAS number of 2-aminoethanol?
The CAS number of 2-aminoethanol is 141-43-5. Its EC number is 205-483-3.
What is the chemical formula of 2-aminoethanol?
The molecular formula of 2-aminoethanol is C2H7NO and its molecular weight is 61.08 g/mol.
What does a 2-aminoethanol label have to show?
Under CLP Annex VI the label for 2-aminoethanol carries the pictograms Corrosion and Exclamation mark and the signal word is Danger.
Is 2-aminoethanol flammable?
CLP Annex VI assigns 2-aminoethanol no flammability hazard class. That is not a statement that it cannot burn: the harmonised list only records the hazards that were assessed for it. The flash point reported for it is 86 °C (186.8 °F) (HSDB).
Is 2-aminoethanol a carcinogen?
CLP Annex VI records no harmonised carcinogenicity classification for 2-aminoethanol. 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 2-aminoethanol?
The US occupational exposure limit reported for 2-aminoethanol is 3.0 [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 2-aminoethanol?
The boiling point reported for 2-aminoethanol is 170.3 °C (338.5 °F) (HSDB).
What is the melting point of 2-aminoethanol?
The melting point reported for 2-aminoethanol is 10.4 °C (50.7 °F) (HSDB).
How should 2-aminoethanol be stored?
Keep container tightly closed in a dry and well-ventilated place. Containers which are opened must be carefully resealed and kept upright to prevent leakage. Hygroscopic. Handle and store under inert gas. (Hazardous Substances Data Bank (HSDB))
Nearby
Substances next to 2-aminoethanol
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