Monoethanolamine (MEA)

Category: Organic amine

Applications: Monoethanolamine is one of the fundamental chemical raw materials. In the pharmaceutical industry, it is used to synthesize L‑cysteine hydrochloride, taurine, and anti‑infective agents such as furazolidone, metronidazole, ketoconazole, the antiparasitic drug tetramisole, and cardiovascular drugs like panangin. In veterinary medicine, it serves as a precursor for the synthesis of olaquindox. It is also employed in the production of polyvinylpyrrolidone (PVP), ethylenimine, and polyethyleneimine; in the synthesis of the fine‑chemical intermediate ethylenediamine; as a fluorescent brightener in the textile industry; in the dye‑manufacturing sector for the synthesis of dyes; and as a neutralizing agent in the rubber and carbon black industries. Additionally, it finds applications in surfactants, rust inhibitors, detergents, preservatives, and paint manufacturing.

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Product Introduction

Name: Monoethanolamine

　　Molecular formula: HO-CH2-CH2-NH2

　　Molecular weight: 61

　　CAS Number: 141-43-5

Physical properties:

　　At room temperature, it is a colorless, transparent, viscous liquid with an ammonia odor.

　　Boiling point: 170°C at atmospheric pressure.

　　Freezing point: 10.5°C,

　　It exhibits strong hygroscopicity and is completely soluble in water and ethanol.

Chemical properties:

　　Due to the presence of hydroxyl and amino functional groups in its molecular structure, ethanolamine exhibits both amine and alcohol characteristics, enabling it to react with acidic substances to form esters, amide salts, and other derivatives.

Quality indicators:

Project	Indicator
Purity (wt%)	≥99.5
Moisture (wt%)	≤0.4
Platinum–Cobalt Color Number	≤15
Appearance	Clear and transparent

Purpose:

　　Monoethanolamine is one of the fundamental chemical raw materials; in the pharmaceutical industry, it is used to synthesize L‑cysteine hydrochloride, taurine, and anti‑infective agents such as furazolidone, metformin, ketoconazole, the antiparasitic drug tetramisole, and cardiovascular drugs like panaxoside, among others. In the veterinary‑pharmaceutical sector, it serves as a precursor for the synthesis of olaquindox. It is also employed in the production of polyvinylpyrrolidone (PVP), ethylenimine, and polyethylenimine; in the synthesis of the fine‑chemical intermediate ethylenediamine; as a fluorescent brightener in the textile industry; in the dye‑manufacturing process; and as a neutralizing agent in the rubber and carbon black industries. Additionally, it finds applications in the formulation of surfactants, rust inhibitors, detergents, preservatives, and paints.

Packaging:

　　Tank trucks, plastic drums, and cold-rolled steel drums (net weight 210 kg per drum)

Precautions:

　　During handling, avoid impacts to prevent leaks; store in a dry, well-ventilated area and protect from moisture.

Keywords: Monoethanolamine (MEA)

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Main applications: It is used as a curing agent and crosslinking agent for room‑temperature vulcanizing silicone rubber. Tetrabutylketoxysilane is often blended with methyltris(β‑ketoxymethyl)silane, which can significantly accelerate the surface drying of ketoxime‑cured RTV silicone rubbers, prevent surface cracking, and enhance properties such as tensile strength. Replacing vinyltris(β‑ketoxymethyl)silane with tetrabutylketoxysilane eliminates the tendency of the latter to yellow over time. Furthermore, when using tetrabutylketoxysilane, an organotin catalyst may be omitted, making it suitable for applications where organotin compounds are not permitted.

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