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Corrosion inhibitors

Ethanolamine

Also known as 2-aminoethanol, monoethanolamine, Olamine

CAS 141-43-5Formula C2H7NOMolar mass 61.08 g/molEC 205-483-3
GHS signal word: Danger. Pictograms: Corrosive, Harmful or irritant 427 suppliers listed Drug substance
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Ethanolamine chemical structure, C2H7NO, CAS 141-43-5
2D chemical structure

Key facts

What buyers check first

All properties
Appearance
Colorless, viscous liquid or solid (below 51 °F)
Melting point
10.4 °C
Boiling point
170.3 °C
Density
1.0180 g/cm³ at 20 °C
Flash point
86 °C
HS code
292211
Category
Corrosion inhibitors
UN number
UN 2491
Illustrative photo, clear colourless liquid in a glass reagent bottle on a laboratory bench
Typical packagingIllustrative packaging image, not the actual product

What is Ethanolamine?

Plain description, key identifiers and synonyms

Ethanolamine is a member of the class of ethanolamines that is ethane with an amino substituent at C-1 and a hydroxy substituent at C-2, making it both a primary amine and a primary alcohol. It has a role as a mouse metabolite, an Escherichia coli metabolite and a human metabolite. It is a primary alcohol, a member of ethanolamines and a primary amine. It is a conjugate base of an ethanolaminium(1+).

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
2-aminoethanol
CAS number
141-43-5 CAS number cross-checkedOther or deprecated CAS: 12220-07-4, 12220-09-6, 32708-95-5, 9007-33-4
EC numbers
205-483-3, 602-038-9, 618-436-0, 682-672-0
Molecular formula
C2H7NO
UNII
5KV86114PT
MDL number
MFCD00008183
INCI name
ETHANOLAMINE
InChIKey
HZAXFHJVJLSVMW-UHFFFAOYSA-N
InChI
InChI=1S/C2H7NO/c3-1-2-4/h4H,1-3H2
SMILES (canonical and isomeric)
C(CO)N

Synonyms

  • 2-aminoethanol
  • monoethanolamine
  • Olamine
  • 2-Aminoethan-1-ol
  • 2-Hydroxyethylamine
  • colamine
  • Aminoethanol
  • Ethylolamine
  • Ethanol, 2-amino-
  • 2-Hydroxyethanamine
  • 2-Amino-1-ethanol
  • beta-Hydroxyethylamine
  • 2-Ethanolamine
  • 1-Amino-2-hydroxyethane
  • beta-Aminoethyl alcohol
  • Thiofaco M-50
  • Aethanolamin
  • 2-Aminoethyl alcohol
  • MEA (alcohol)
  • USAF EK-1597
  • beta-Aminoethanol
  • Kolamin
  • Monoaethanolamin
  • beta-ethanolamine
  • 2-Aminoaethanol
Show all 31 synonyms
  • Etanolamina
  • Glycinol (monoethanolamine)
  • 2-Aminoetanolo
  • 2 Aminoethanol
  • 2-amino-ethanol
  • 2-Amino ethanol

Physical and chemical properties

Measured values and descriptors computed from the structure

Physical and chemical properties

Measured values, check the supplier specification for your grade

Appearance
Colorless, viscous liquid or solid (below 51 °F)exp.
Odour
Unpleasant, ammonia-likeexp.
Melting point
10.4 °Cexp.
Boiling point
170.3 °Cexp.
Density
1.0180 g/cm³ at 20 °Cexp.
Flash point
86 °Cexp.
Autoignition temperature
410 °Cexp.
Solubility
In water, 1 × 10⁺⁶ mg/L at 25 °C (miscible)exp.
Vapour pressure
VP: 6 mm Hg at 60 °Cexp.

Values vary by grade. Ask suppliers for the COA or TDS of the batch you buy.

Computed descriptors

Calculated from the structure, useful for screening and formulation

Molecular weight
61.08 g/molcalc.
Exact mass
61.0528 Dacalc.
LogP (octanol/water)
-1.06calc.
Topological polar surface area
46.25 Ųcalc.
Hydrogen bond donors
2calc.
Hydrogen bond acceptors
2calc.
Rotatable bonds
1calc.
Heavy atoms
4calc.
Rings
0calc.
Aromatic rings
0calc.
Fraction sp3 carbons
1calc.
Formal charge
0calc.
Stereocentres
0calc.
Lipinski rule of five
Passes (0 violations)calc.

Calculated for screening. Confirm critical figures with the supplier.

Safety and hazards

GHS classification summary, not a safety data sheet

GHS signal word
Danger
GHS05: Corrosive
Corrosive
GHS07: Harmful or irritant
Harmful or irritant
230NFPA 704 rating

Hazard statements

  • H302Harmful if swallowed.
  • H312Harmful in contact with skin.
  • H314Causes severe skin burns and eye damage.
  • H332Harmful if inhaled.
Precautionary statements (20)
  • P260Do not breathe dust, fume, gas, mist, vapours or spray.
  • P261Avoid breathing dust, fume, gas, mist, vapours or spray.
  • P264Wash skin thoroughly after handling.
  • P270Do not eat, drink or smoke when using this product.
  • P271Use only outdoors or in a well-ventilated area.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P301 + P317If swallowed: Get medical help.
  • P301 + P330 + P331If swallowed: Rinse mouth. Do not induce vomiting.
  • P302 + P352If on skin: Wash with plenty of water.
  • P302 + P361 + P354If on skin: Take off immediately all contaminated clothing. Immediately rinse with water for several minutes.
  • P304 + P340If inhaled: Remove person to fresh air and keep comfortable for breathing.
  • P305 + P354 + P338If in eyes: Immediately rinse with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
  • P316Get emergency medical help immediately.
  • P317Get medical help.
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P330Rinse mouth.
  • P362 + P364Take off contaminated clothing. And wash it before reuse.
  • P363Wash contaminated clothing before reuse.
  • P405Store locked up.
  • P501Dispose of contents and container in accordance with local regulations.
UN number
UN 2491
Transport hazard class
8
Packing group
III

GHS classification summary, not a safety data sheet (SDS). Classifications can differ by supplier, grade and concentration. Always check the supplier's SDS.

Full safety data and first aid

Ethanolamine suppliers

Sponsored listings first, then the documented ranking: membership, verification, replies, completeness, freshness and ratings

All 427 suppliers
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Where suppliers are based

427 suppliers in 60 countries

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Ethanolamine price

Indicative price range per kg from live supplier offers

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Uses and applications

What the substance is used for, by industry and function

The active ingredient is no longer contained in any registered (pesticide) products. ... "cancelled.".

To remove CO2 and H2S from natural gas and other gases, in the synthesis of surface active agents, in polishes, hair waving solutions, in emulsifiers, as softening agent for hides, dispersing agent for agricultural chemicals. Is reacted with other substances to form an accelerator in the manufacture of antibiotics.

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Pharmaceutics aid (surfactant, emulsifying and solubilizing agent).

Scrubbing acid gases (H2S, CO2), especially in synthesis of ammonia, from gas streams, nonionic detergents used in dry cleaning, wool treatment, emulsion paints, polishes, agricultural sprays, chemical intermediates, pharmaceuticals, corrosion inhibitor, rubber accelerator.

Industrial uses: Surface modifier, Laboratory chemicals, Etching agent, Adhesion/cohesion promoter, Chelating agent, Intermediate, Processing aids, specific to petroleum production, Preservative.

Consumer uses: Fixing agent (mordant), Cleaning agent, Preservative, Corrosion inhibitor, Soil amendments (fertilizers), Etching agent, Processing aids, specific to petroleum production.

Use classes: Specialized Industrial Chemicals, Safer Chemical Classes, Emission scrubbers, Cosmetics.

Cosmetic ingredient, INCI name ETHANOLAMINE(buffering)

Roles

  • Escherichia coli metabolite
  • animal metabolite
  • bacterial metabolite
  • eukaryotic metabolite
  • human metabolite
  • mammalian metabolite
  • metabolite
  • mouse metabolite
  • prokaryotic metabolite

Functional uses

  • Chelating agent
  • Cleaning agent
  • Corrosion inhibitor
  • Defoamer
  • Emulsifier
  • Fragrance
  • Humectant
  • Preservative
  • Processing aids not otherwise specified
  • Solvent
  • Surfactant (surface active agent)
  • pH regulating agent

Cosmetic functions

  • Buffering

Pharmacology

Ethanolamine is a Sclerosing Agent. The mechanism of action of ethanolamine is as a Sclerosing Activity. The physiologic effect of ethanolamine is by means of Vascular Sclerosing Activity.

How it is made

Alkanolamines are typically manufactured from the corresponding olefin oxide and ammonia. Mono-, di-, and trialkanolamines are produced in the reactor and sent to downstream distillation columns for separation. The oxide-ammonia reaction is exothermic. Reaction rates decrease with increased carbon number of the oxide (ethylene oxide > propylene oxide > butylene oxide). Anhydrous or aqueous ammonia may be used, although anhydrous ammonia is typically used to favor monoalkanolamine production. Using anhydrous ammonia requires that the reactor be operated at higher temperature and pressure.

Read more

Varying the ammonia to oxide ratio is the primary way to shift the product split among the mono-, di-, and trialkanolamines. A high ammonia to oxide ratio favors mono- production.

Prepared on a large scale by ammonolysis of ethylene oxide, ... also from nitromethane and formaldehyde.

Regulatory status

Inventories, regulations and trade controls that list this substance

Europe

  • EU harmonised classification (CLP Annex VI)
    Index no: 603-030-00-8

Health and food

  • EU cosmetic ingredient inventory
  • Active ingredient in FDA approved drug labels

United States

  • Safer Choice ingredient list (USA)
  • TSCA inventory (USA)
    Status: Active in US commerce

HS code and trade data

Customs classification and reported world trade statistics

Global trade

World import and export statistics for the HS code Ethanolamine is traded under.

HS 2922.11Exact HS code

Monoethanolamine and its salts

World exports in 2024
$393M
−2.8% vs 2023, imports $471M
2019 to 2024
Top exporters
  1. Saudi Arabia26.0%
  2. United States24.4%
  3. China19.4%
Top importers
  1. Canada19.3%
  2. United States15.3%
  3. Belgium5.8%
Reported customs values in USD, not prices.Full trade data

The HS code shown for Ethanolamine is indicative (it was matched by name in the HS nomenclature). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about Ethanolamine, based on the data on this page

What is Ethanolamine?

Ethanolamine is a member of the class of ethanolamines that is ethane with an amino substituent at C-1 and a hydroxy substituent at C-2, making it both a primary amine and a primary alcohol. It has a role as a mouse metabolite, an Escherichia coli metabolite and a human metabolite.

What is the CAS number of Ethanolamine?

The CAS registry number of Ethanolamine is 141-43-5. Other or deprecated CAS numbers: 12220-07-4, 12220-09-6, 32708-95-5.

What is the molecular formula and weight of Ethanolamine?

The molecular formula of Ethanolamine is C2H7NO and its molar mass is 61.08 g/mol.

What is Ethanolamine used for?

The active ingredient is no longer contained in any registered (pesticide) products. ... "cancelled.".

Is Ethanolamine hazardous?

Ethanolamine carries the GHS signal word "Danger". Main hazards: harmful if swallowed, harmful in contact with skin, causes severe skin burns and eye damage. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Ethanolamine?

Ethanolamine is usually classified under HS code 292211 (Monoethanolamine and its salts). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Ethanolamine?

CompoundList lists 427 suppliers of Ethanolamine in United States, India, China, Turkey and 56 more. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

Where can I buy Ethanolamine in India?

69 suppliers in India list Ethanolamine on CompoundList. Filter the suppliers list by country and send a request to compare prices, grades and delivery times.

What is the price of Ethanolamine?

Suppliers quote Ethanolamine on request because prices depend on grade, purity, quantity and destination. A free request on CompoundList gets you several quotes to compare.

Guides for buyers

Practical guides that help when you source, ship or handle Ethanolamine

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Data last updated 7 Oct 2026. Details may have changed, please confirm them with the supplier. Report an error on this page
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