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Monoethanolamine

CAS Number
141-43-5
EC Number
205-483-3
Chemical Formula
C2H7NO
Molecular Weight
61.08 g/mol

Description

Monoethanolamine ( CAS 141-43-5 ), commonly abbreviated as MEA and also known as Olamine in cosmetic and pharmaceutical contexts, is a bifunctional compound combining amine and alcohol groups. It serves as a pH regulator, surfactant intermediate, and gas treatment agent across multiple industries. Its ability to absorb acidic gases and neutralize formulations makes it a high-volume industrial chemical. Demand is high across refining, personal care, and water treatment sectors. In natural gas and refinery operations, MEA is the active absorbent in amine gas sweetening units, selectively removing H₂S and CO₂ from process streams. Personal care formulators use it to neutralize carbomer-based gels and adjust pH in creams, lotions, and hair products. In water treatment, MEA functions as a corrosion inhibitor and pH buffer in boiler and cooling water systems. Pharmaceutical manufacturers use it as an alkalizing agent in topical and oral formulations, where controlled pH stability is a critical quality parameter. MEA is supplied as a clear liquid, typically at 99% purity. This purity level is standard for industrial and technical-grade applications. Pharmaceutical and personal care buyers can source USP and BP grades with tighter purity and impurity specifications. Bulk supply is standard in drums, IBCs, and isotanks for high-volume industrial procurement. These logistics options ensure reliable delivery for large-scale manufacturing and chemical processing facilities worldwide. Contact us for supply of Monoethanolamine Request Quote

Other Names (Synonyms)

β-Aminoethyl alcohol | Olamine | H-Glycinol | glycinol | Envision Conditioner PDD 9020 | colamine | beta-hydroxyethylamine | beta-ethanolamine | MEA

Key Technical Features

  • High Purity Grade standard
  • Consistent Batch Quality
  • Full Regulatory & REACH Support
  • Global Logistics Network enabled

Physical Properties

Melting Point10.3 °C
Boiling Point170.8 °C @ Press: 760 Torr
Density1.0180 g/cm³ @ Temp: 20 °C
Flash Point200 °F
AppearanceEthanolamines can be detected by odor as low as 23 ppm. Monoethanolamine is a colorless, viscous liquid or solid (below 111C) with an unpleasant, ammonialike odor
ColorAPHA: ≤15
Odorammoniacal odor
FormLiquid
Water Solubilitymiscible
Vapor Pressure0.2 mm Hg ( 20 °C)
Refractive Indexn 20/D 1.454(lit.)
pH12.1 (100g/l, H2O, 20℃)
Log P-2.3--1.91 at 25℃

Safety & Handling

Danger
GHS05· CorrosiveGHS07· IrritantGHS02· FlammableGHS08· Health HazardGHS06· Toxic

Hazard Statements

H227Combustible liquid
H228Flammable solid
H302Harmful if swallowed
H303May be harmful if swallowed
H311Toxic in contact with skin
H312Harmful in contact with skin
H314Causes severe skin burns and eye damage
H317May cause an allergic skin reaction
H318Causes serious eye damage
H332Harmful if inhaled
H334May cause allergy or asthma symptoms or breathing difficulties if inhaled
H335May cause respiratory irritation
H336May cause drowsiness or dizziness
H361Suspected of damaging fertility or the unborn child
H370Causes damage to organs
H372Causes damage to organs through prolonged or repeated exposure
H373May causes damage to organs through prolonged or repeated exposure
H402Harmful to aquatic life
H412Harmful to aquatic life with long lasting effects

Precautionary Statements

P203Obtain, consult and follow expert instructions for use.
P210Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking.
P233Keep container tightly closed.
P240Ground and bond container and receiving equipment.
P241Use explosion-proof equipment.
P260Do not breathe dust/fume/gas/mist/vapours/spray.
P261Avoid breathing dust/fume/gas/mist/vapours/spray.
P262Do not get in eyes, on skin, or on clothing.
P264Wash … thoroughly after handling.
P270Do not eat, drink or smoke when using this product.
P271Use only outdoors or in a well-ventilated area.
P272Contaminated work clothing should not be allowed out of the workplace.
P273Avoid release to the environment.
P280Wear protective gloves/protective clothing/eye protection/face protection.
P284In case of inadequate ventilation wear respiratory protection.
P316Get emergency medical help immediately.
P317Get emergency medical help.
P318IF exposed or concerned, get medical advice.
P319Get medical advice/attention if you feel unwell.
P321Specific treatment (see … on this label).
P330Rinse mouth.
P363Wash contaminated clothing before reuse.
P403Store in a well-ventilated place.
P405Store locked up.
P501Dispose of contents/container in accordance with local regulations.
P265Wash … thoroughly after handling.
P317Get emergency medical help.
P352IF ON SKIN: Wash with plenty of water.
P340IF INHALED: Remove person to fresh air and keep comfortable for breathing.
P316Get emergency medical help immediately.
P317Get emergency medical help.
P316Get emergency medical help immediately.
P364Take off immediately all contaminated clothing and wash it before reuse.
P364Take off contaminated clothing and wash it before reuse.
P378Use … for extinction.
P233Store in a well-ventilated place. Keep container tightly closed.
P331Rinse mouth. Do NOT induce vomiting.
P354IF ON SKIN: Take off immediately all contaminated clothing. Rinse skin with water/shower.
P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.

Trade & Regulatory

HS Code29221100
UN Number2924
ADR Class3
Packing GroupIII
WGK (Germany)1