MONOETHANOLAMINE

PRODUCT IDENTIFICATION

CAS NO. 141-43-5

MONOETHANOL AMINE

EINECS NO. 205-483-3
FORMULA (CH2)2OHNH2
MOL WT. 61.06
H.S. CODE 2922.12

TOXICITY

Oral rat LD50: 1720 mg/kg
SYNONYMS Aminoethyl Alcohol; Beta-Aminoethanol;
2-Amino-ethanol; Ethanolamine; 1-Amino-2-hydroxyethane; 2-Amino-1-Ethanol; 2-Aminoaethanol German); 2-Aminoetanolo (Italian); 2-Aminoethanol; Aethanolamin (German); Beta-Aminoethyl Alcohol; Beta-ethanolamine; Beta-hydroxyethylamine; Colamine; Etanolamina (Italian); Ethylolamine; Glycinol; MEA; Monoaethanolamin (German);

SMILES

 

CLASSIFICATION

 

PHYSICAL AND CHEMICAL PROPERTIES

PHYSICAL STATE clear liquid
MELTING POINT 10 - 11 C
BOILING POINT

170 - 171 C

SPECIFIC GRAVITY 1.015 - 1.020
SOLUBILITY IN WATER Miscible
pH 12.0 (0.1N aq sol.)
VAPOR DENSITY 2.1

AUTOIGNITION

365 C

NFPA RATINGS

Health: 2 ; Flammability: 2; Reactivity: 0

REFRACTIVE INDEX

1.4539
FLASH POINT

93 C

STABILITY Stable under ordinary conditions

GENERAL DESCRIPTION & APPLICATIONS

There are three ethanolamines called mono, di and tri-ethanolamine with formula (CH2CH2OH)NH2, (CH2CH2OH)2NH, and (CH2CH2OH)3N respectively. They are hygroscopic viscous liquid or semi-solid at room temperature. They are soluble in water, in alcohol and acetone, insoluble in ether and benzene;

 

Monoethanolamine
(CAS #: 141-43-5

Diethanolamine
(CAS #: 111-42-2)

Triethanolamine
(CAS #: 102-71-6)

Formula

(CH2CH2OH)NH2
(61.08)

(CH2CH2OH)2NH
(
105.14)

(CH2CH2OH)3N
(
149.19)

Specific Gravity

1.018

1.0919

1.126

Freezing Point C

10 - 11

28

21 - 22

Flash Point C

91.0

166

210

Viscosity cP

at 20 C

24

crystalline

crystalline

 

at 30 C

 

387

404

They are corrosive with a characteristic ammonia-like odor. their colors range from almost colorless to amber depending on purity. These substances decompose on heating and produce toxic and corrosive gases including nitrogen oxides. They are medium strongly basic and react with cellulose nitrate resulting in causing fire and explosion hazard. They react violently with strong acids and strong oxidants. Ethanolamines are produced from ethylene oxide reacted with ammonia. The principle product is monoethanolamine and secondary products of diethanolamine and triethanolamine are produced since ethylene oxide is reactive.  They are the simplest members of the alkanolamine compounds. They have the physical and chemical characteristics of both alcohols and amines in one molecule. Ethanolamines stuctures are widely found in antihistamine drugs. In industrial field, monoethanolamine is an important raw material in the production of ethylenediamine. Ethanolamines are used as gas-scrubber in refinery and natural gas operations. They are widely used in the field of:

  • Gas-scrubber
    • Natural and refinery gas operations
    • Hydrogen sulfide (H2S) and CO2 gas removal
  • Textile Operation
    • Softeners
    • Lubricants
    • Dye Leveling Agents
    • Dispersants
    • Durable Press
    • Optical Brighteners
  • Surfactants and  Metalworking fluids
    • Impart alkalinity
    • Detergents
    • Cosmetic formulations
    • Acid neutralization
    • Fatty acid soaps
    • Emulsifiers
    • Corrosion Inhibitors
  • Others
    • Concrete additives
    • Cement admixtrue
    • Urethane foams
    • Agricultural products
    • Photographic chemicals
    • Biocides
    • Oil well chemicals
    • Rubber vulcanization accelerators
    • Plasticizers
SALES SPECIFICATION

APPEARANCE

clear liquid
ASSAY

99.0% min

COLOR, APHA

20 max

MOISTURE

0.3% max

TRANSPORTATION
PACKING 210kgs in drum
HAZARD CLASS 8 (Packing group: III)
UN NO. 2491
OTHER INFORMATION
Hazard Symbols: XN C, Risk Phrases: 34-36/37/38-20Safety Phrases:
ETHANOLAMINE MOLECULES