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141-43-5

Basic Information
CAS No.: 141-43-5
Name: Ethanolamine
Molecular Structure:
Molecular Structure of 141-43-5 (Ethanolamine)
Formula: C2H7NO
Molecular Weight: 61.10
Synonyms: EPA Pesticide Chemical Code 011601;Ethanol, 2-amino;2-aminoethanol;Thiofaco M-50;Ethylolamine;colamine;beta-Aminoethyl alcohol;2-Ethanolamine;2-Aminoethyl alcohol;beta-Hydroxyethylamine;beta-Aminoethanol;1-Amino-2-hydroxyethane;Aminoethanol;Envision Conditioner PDD 9020;2-Hydroxyethylamine;Ethanol, 2-amino- (8CI,9CI);2-Hydroxyethanamine;Ethanol,2-amino-;Olamine;beta-Aminoethyl alcohol beta-Ethanolamine;2-Amino-1-ethanol;Chemical material series;MEA 141-43-5 Monoethanolamine;H-Gly-ol;
EINECS: 205-483-3
Density: 0.973 g/cm3
Melting Point: 10-11 °C(lit.)
Boiling Point: 170.9 °C at 760 mmHg
Flash Point: 93.3 °C
Solubility: miscible with water
Appearance: clear liquid
Hazard Symbols: CorrosiveC,ToxicT
Risk Codes: 20/21/22-34-39/23/24/25-23/24/25-10
Safety: 26-36/37/39-45
Transport Information: UN 2924 3/PG 3
PSA: 46.25000
LogP: -0.36230
Synthetic route

trityl-(3-trityloxy-propyl)-amine

141-43-5

ethanolamine

Conditions
ConditionsYield
With sodium hydrogen sulfate; silica gel In methanol; dichloromethane at 20℃; for 3.5h;95%
100-46-9

benzylamine

88891-55-8

5-(2-hydroxyethyl)hexahydro-1,3,5-dithiazine

A

2547-66-2

1,3,5-Tribenzyl-1,3,5-triazacyclohexane

B

141-43-5

ethanolamine

Conditions
ConditionsYield
at 20℃; for 24h;A 95%
B n/a
625-48-9

2-nitro-1-ethanol

A

141-43-5

ethanolamine

B

30635-68-8

2-hydroxyethylhydroxylamine

Conditions
ConditionsYield
With hydrogen In para-xylene; isopropyl alcohol at 25℃; under 760.051 Torr; for 3h;A 5%
B 95%
56-40-6

glycine

141-43-5

ethanolamine

Conditions
ConditionsYield
With sulfuric acid; hydrogen In water at 79.84℃; under 60006 Torr;92.3%
With zinc borohydride In tetrahydrofuran for 7h; Heating;70%
With sodium tetrahydroborate; iodine In tetrahydrofuran
693-06-1

(2-hydroxyethyl)-formamide

141-43-5

ethanolamine

Conditions
ConditionsYield
With caesium carbonate In methanol at 60℃; for 8h;92%
24070-16-4

N-tritylethanolamine

141-43-5

ethanolamine

Conditions
ConditionsYield
With sodium hydrogen sulfate; silica gel In methanol; dichloromethane at 20℃; for 3.5h;90%
104-63-2

N-Benzylethanolamine

141-43-5

ethanolamine

Conditions
ConditionsYield
With ammonium formate; palladium on activated charcoal In methanol for 0.166667h; Heating;86%
With 9,10-Dicyanoanthracene In water; acetonitrile Irradiation;80%
With di-isopropyl azodicarboxylate In tetrahydrofuran at 20℃; for 336h;
141-43-5

ethanolamine

Conditions
ConditionsYield
With ammonium hydroxide; Ni6AlO(z); hydrogen at 80℃; under 3750.38 Torr; for 3h; Autoclave;85%
With ammonia; hydrogen; cobalt/manganese/sodium/phosphorous reduced catalyst In water at 100℃; under 75007.5 Torr; for 8h; Product distribution / selectivity; Autoclave;
26646-35-5

2-(3-nitrophenoxy)ethanamine

A

C8H9N2O3(1-)

B

554-84-7

meta-nitrophenol

C

55131-09-4

N-(2-hydroxyethyl)-3-nitroaniline

D

141-43-5

ethanolamine

Conditions
ConditionsYield
With deuteriated sodium hydroxide In water-d2 at 20℃; for 0.833333h; Smiles rearrangement; UV-irradiation;A 15%
B n/a
C 73%
D n/a
616-34-2

methoxycarbonylmethylamine

141-43-5

ethanolamine

Conditions
ConditionsYield
With sodium tetrahydroborate In diethylene glycol dimethyl ether at 76 - 78℃; for 3h;70%
With lithium aluminium tetrahydride In tetrahydrofuran for 5h;
598-42-5

glycolamide

141-43-5

ethanolamine

Conditions
ConditionsYield
With hydrogen; iridium In cyclohexane; glycerol at 180℃; under 15001.5 Torr; for 3.08h; Reagent/catalyst; Temperature; Solvent; Pressure; Autoclave;61%
4746-64-9

2-aminoacetyl chloride

141-43-5

ethanolamine

Conditions
ConditionsYield
With lithium aluminium tetrahydride In tetrahydrofuran for 2h; Heating;55%
75-21-8

oxirane

7664-41-7

ammonia

A

102-71-6

triethanolamine

B

141-43-5

ethanolamine

C

111-42-2

2,2'-iminobis[ethanol]

Conditions
ConditionsYield
water at 48.84 - 76.84℃; under 12751.3 Torr; for 0.25h;A 7.7%
B 52.1%
C 40.2%
107-21-1

ethylene glycol

A

110-85-0

piperazine

B

141-43-5

ethanolamine

C

111-41-1

2-(2-Aminoethylamino)ethanol

D

107-15-3

ethylenediamine

E

111-40-0

1,5-diamino-3-azapentane

F

111-42-2

2,2'-iminobis[ethanol]

Conditions
ConditionsYield
Stage #1: ethylene glycol With ammonia; hydrogen at 150℃; under 150015 Torr;
Stage #2: copper oxide; graphite; molybdenum oxide; nickel oxide; zirconium dioxide; mixture of at 170℃; under 150015 Torr;
A 6.8%
B 29%
C 5.7%
D 49.5%
E 3.9%
F 1.7%
With ammonia; hydrogen at 170 - 180℃; under 150015 Torr; Conversion of starting material;
With ammonia; water; hydrogen at 180℃; under 150015 Torr; Conversion of starting material;
With ammonia; hydrogen at 150 - 170℃; under 150015 Torr; Conversion of starting material;
With ammonia; hydrogen at 200℃; under 150015 Torr; Conversion of starting material;
110-73-6

2-(Ethylamino)ethanol

A

50-00-0

formaldehyd

B

75-04-7

ethylamine

C

141-43-5

ethanolamine

D

75-07-0

acetaldehyde

Conditions
ConditionsYield
With water at 25℃; anodic oxidation, pH 10, carbonate buffer; Further byproducts given;A 14%
B 43%
C 45%
D 44%
110-73-6

2-(Ethylamino)ethanol

A

50-00-0

formaldehyd

B

75-04-7

ethylamine

C

141-43-5

ethanolamine

D

75-07-0

acetaldehyde

E

141-46-8

Glycolaldehyde

Conditions
ConditionsYield
With water at 25℃; Product distribution; Mechanism; anodic oxidation, carbonate buffer, pH 10; effect of substituents investigated with different types of β-alkanolamines;A 14%
B 43%
C 45%
D 44%
E n/a
5680-79-5

glycine ethyl ester hydrochloride

141-43-5

ethanolamine

Conditions
ConditionsYield
With lithium aluminium tetrahydride In tetrahydrofuran for 2h; Heating;44%
7336-29-0

2-aminoethyl vinyl ether

A

16250-70-7

2-methyl-2,3,4,5-tetrahydroisoxazole

B

93555-19-2

N-Ethylideneethanolamine Vinyl Ether

C

141-43-5

ethanolamine

Conditions
ConditionsYield
With palladium dichloride In benzene Heating;A 21%
B 33%
C n/a
mercury(II) diacetate In hexane at 60℃; for 4h;A 20%
B 28.3 g
C 26.1 g
591-51-5

phenyllithium

113556-34-6

N-(1,2,5-trimethylpiperidinylidene-4-)-β-hydroxyethylamine

A

7516-33-8

1,2,5-trimethyl-4-piperidone

B

141-43-5

ethanolamine

C

113556-41-5

1,2,5-trimethyl-4-phenyl-4-N-(β-hydroxyethyl)aminopiperidine

Conditions
ConditionsYield
In diethyl etherA n/a
B n/a
C 11%
100-52-7

benzaldehyde

141-43-5

ethanolamine

104-63-2

N-Benzylethanolamine

Conditions
ConditionsYield
Stage #1: benzaldehyde; ethanolamine In methanol at 20℃; for 0.25h;
Stage #2: With methanol; sodium tetrahydroborate at 0 - 20℃;
100%
With copper chromium spinel oxide; hydrogen; barium(II) oxide at 130℃; under 37503 Torr; for 1h;97.8%
Stage #1: benzaldehyde; ethanolamine With magnesium sulfate In methanol at 20℃; for 18h;
Stage #2: With sodium tetrahydroborate In methanol at 0 - 20℃; for 1h;
95%
50-00-0

formaldehyd

141-43-5

ethanolamine

4719-04-4

1,3,5-tris(2-hydroxyethyl)-1,3,5-triazacyclohexane

Conditions
ConditionsYield
In methanol at 20℃; for 16h;100%
In methanol for 48h;86%
With water
In ethanol Cyclization;
at 50 - 80℃; for 1h;92 g
50-00-0

formaldehyd

141-43-5

ethanolamine

88788-08-3

N-(hydroxyethyl)aminomethanesulfonic acid

Conditions
ConditionsYield
Stage #1: formaldehyd; ethanolamine In water at 10℃; for 24h;
Stage #2: With sulfur dioxide In water at 20℃; pH=<= 1.0;
100%
With water und anschliessende Saettigung mit SO2;
14352-61-5

methyl cyclohexylacetate

141-43-5

ethanolamine

2-cyclohexyl-N-(2-hydroxyethyl)acetamide

Conditions
ConditionsYield
With 2-tert-butylimino-2-diethylamino-1,3-dimethyl-perhydro-1,3,2-diazaphosphorine In acetonitrile at 20℃; for 15h; Schlenk technique; Inert atmosphere;100%
at 100 - 120℃;
141-43-5

ethanolamine

501-53-1

benzyl chloroformate

77987-49-6

benzyl 2-hydroxyethylcarbamate

Conditions
ConditionsYield
With triethylamine In dichloromethane at 0 - 20℃; for 1h;100%
In benzene for 0.5h; Ambient temperature;95%
With triethylamine In dichloromethane at 20℃; for 6h; Large scale;95.3%
141-43-5

ethanolamine

108-10-1

4-methyl-2-pentanone

32781-30-9

(2-aminoethanol)methyl isobutyl ketimine

Conditions
ConditionsYield
at 76 - 99℃; under 252.025 Torr; for 2h; Dean-Stark;100%
In cyclohexane at 90.7 - 105.9℃; for 2h; Dean-Stark; Reflux;99%
In cyclohexane at 90.7 - 105.9℃; for 2h; Dean-Stark;99%
141-43-5

ethanolamine

98-59-9

p-toluenesulfonyl chloride

14316-14-4

N-(2-hydroxy-ethyl)-4-methyl-benzenesulfonamide

Conditions
ConditionsYield
With triethylamine In dichloromethane at 0 - 20℃; for 18h; Inert atmosphere;100%
With triethylamine In dichloromethane at 0 - 20℃; for 24h;99%
With pyridine at 5 - 20℃;96%
141-43-5

ethanolamine

109-94-4

formic acid ethyl ester

693-06-1

(2-hydroxyethyl)-formamide

Conditions
ConditionsYield
Stage #1: ethanolamine With sodium ethanolate at 20℃; for 0.5h;
Stage #2: formic acid ethyl ester In ethanol for 1h; Heating; Further stages.;
100%
at 10 - 20℃; for 12h;100%
99%
383-63-1

ethyl trifluoroacetate,

141-43-5

ethanolamine

6974-29-4

N-(2-hydroxyethyl)-2,2,2-trifluoroacetamide

Conditions
ConditionsYield
In acetonitrile100%
at 20℃; for 2h;100%
With triethylamine In methanol; water95%
141-43-5

ethanolamine

762-04-9

phosphonic acid diethyl ester

14662-78-3

(2-hydroxy-ethyl)-phosphoramidic acid diethyl ester

Conditions
ConditionsYield
With potassium carbonate; potassium hydrogencarbonate; tetrabutylammomium bromide In tetrachloromethane; dichloromethane at 15 - 20℃; for 2h;100%
With tetrachloromethane; triethylamine In tetrahydrofuran at 0 - 20℃; Atherton-Tood reaction; Inert atmosphere;100%
With triethylamine In tetrachloromethane; benzene
141-43-5

ethanolamine

93-91-4

1-phenylbutan-1,3-dione

65271-13-8

(Z)-3-(2-hydroxyethylamino)-1-phenylbut-2-en-1-one

Conditions
ConditionsYield
at 130℃; for 0.0833333h; microwave irradiation;100%
With potassium dihydrogenphosphate at 50℃; for 0.5h; neat (no solvent);96%
With β‐cyclodextrin In water at 20℃; for 0.5h; chemospecific reaction;88%
16801-19-7

2-[2-(vinyloxy)ethoxymethyl]oxirane

141-43-5

ethanolamine

1-{(2-Hydroxy-ethyl)-[2-hydroxy-3-(2-vinyloxy-ethoxy)-propyl]-amino}-3-(2-vinyloxy-ethoxy)-propan-2-ol

Conditions
ConditionsYield
at 60℃; for 4h;100%
1118-02-1

trimethylsilyl isocyanate

141-43-5

ethanolamine

75226-85-6

<2-(trimethylsilyloxy)ethyl>urea

Conditions
ConditionsYield
at 20 - 80℃; for 2h;100%
87459-26-5

2,2,4-trichlorobutanal

141-43-5

ethanolamine

128538-93-2

7,7-Dichloro-hexahydro-pyrrolo[2,1-b]oxazole

Conditions
ConditionsYield
100%
24424-99-5

di-tert-butyl dicarbonate

141-43-5

ethanolamine

26690-80-2

2-(N-tert-butoxycarbonylamino)ethanol

Conditions
ConditionsYield
In dichloromethane at 20℃; for 5h;100%
aminosulfonic acid at 25 - 28℃; for 0.0833333h;100%
With sodium hydroxide In 1,4-dioxane; water at 0℃; for 2h;100%
605-65-2

5-(dimethylamino)naphth-1-ylsulfonyl chloride

141-43-5

ethanolamine

5282-89-3

5-dimethylamino-N-(2-hydroxyethyl)naphthalene-1-sulfonamide

Conditions
ConditionsYield
With pyridine for 17h; sulfonylation;100%
With triethylamine In dichloromethane98%
In water at 80℃;96%
100238-69-5

dimethylisocyanatosilane

141-43-5

ethanolamine

(2-Dimethylsilanyloxy-ethyl)-urea

Conditions
ConditionsYield
In tetrahydrofuran at -5 - 19℃; for 2h;100%
7468-67-9

o-formylbenzonitrile

141-43-5

ethanolamine

93679-81-3

3-(2-Hydroxy-ethylamino)-2,3-dihydro-isoindol-1-one

Conditions
ConditionsYield
at 40℃; for 1h;100%
59565-09-2

2-(vinyloxy)ethyl isothiocyanate

141-43-5

ethanolamine

111290-30-3

1-(2-Hydroxy-ethyl)-3-(2-vinyloxy-ethyl)-thiourea

Conditions
ConditionsYield
100%

C106H123N37O59P9(9-)

141-43-5

ethanolamine

C99H118N38O59P9(9-)

Conditions
ConditionsYield
In water at 65℃; for 14h;100%
141-43-5

ethanolamine

61489-23-4

2,3:5,6-di-O-cyclohexylidene-D-manno-furanose

N-(2,3;5,6-di-O-cyclohexylidene-D-mannofuranosyl)ethanolamine

Conditions
ConditionsYield
With acetic acid In benzene for 1h; Heating;100%
141-43-5

ethanolamine

3-carboethoxy-5-bis(trifluoromethyl)-2-pyrazoline

3-monoethanolamido-5-bis(trifluoromethyl)-2-pyrazoline

Conditions
ConditionsYield
In diethyl ether; water at 20℃; for 12h;100%
141-43-5

ethanolamine

125215-31-8

4-(ethoxycarbonylamino)-thiophene-3-carboxaldehyde

125215-44-3

(4-{[(E)-2-Hydroxy-ethylimino]-methyl}-thiophen-3-yl)-carbamic acid ethyl ester

Conditions
ConditionsYield
In ethanol for 0.333333h; Heating;100%
141-43-5

ethanolamine

125215-33-0

(2-Ethyl-4-formyl-thiophen-3-yl)-carbamic acid ethyl ester

125215-46-5

(2-Ethyl-4-{[(E)-2-hydroxy-ethylimino]-methyl}-thiophen-3-yl)-carbamic acid ethyl ester

Conditions
ConditionsYield
In ethanol for 0.333333h; Heating;100%
141-43-5

ethanolamine

125215-34-1

(4-Formyl-2,5-dimethyl-thiophen-3-yl)-carbamic acid ethyl ester

125215-47-6

(4-{[(E)-2-Hydroxy-ethylimino]-methyl}-2,5-dimethyl-thiophen-3-yl)-carbamic acid ethyl ester

Conditions
ConditionsYield
In ethanol for 0.333333h; Heating;100%
141-43-5

ethanolamine

100890-40-2

1-Methyl-6-methylsulfanyl-2,4-dioxo-3-phenyl-1,2,3,4-tetrahydro-pyrimidine-5-carbonitrile

115351-90-1

6-(2-Hydroxy-ethylamino)-1-methyl-2,4-dioxo-3-phenyl-1,2,3,4-tetrahydro-pyrimidine-5-carbonitrile

Conditions
ConditionsYield
In acetonitrile for 0.0833333h; Ambient temperature;100%
141-43-5

ethanolamine

96286-28-1

5-Methoxy-4-phenyl-5,6-dihydro-4H-[1,3,4]thiadiazine

2-(4-Phenyl-5,6-dihydro-4H-[1,3,4]thiadiazin-5-ylamino)-ethanol

Conditions
ConditionsYield
Ambient temperature;100%
141-43-5

ethanolamine

75386-17-3

tetramethyl-2,2,3,3-dimethylamino-5-ethoxy-7 carboethoxy-9 trioxa-1,4,6 diaza-8,9 phospha(V)-5 spiro(4,4)noneme-7,8

tetramethyl-2,2,3,3 dimethylamino-5 aza-6 trioxa-1,4,9 phospha(V)-5 spiro(4,4) nonane

Conditions
ConditionsYield
In diethyl ether for 1h; Ambient temperature;100%
141-43-5

ethanolamine

393-52-2

2-Fluorobenzoyl chloride

111904-31-5

2-fluoro-N-(2-hydroxyethyl)benzamide

Conditions
ConditionsYield
With sodium hydroxide In dichloromethane; water for 1h; Ambient temperature;100%
With triethylamine In dichloromethane at 25℃; for 2h;95%
With potassium carbonate In methanol at 0 - 20℃; for 15h; Inert atmosphere;
141-43-5

ethanolamine

139649-70-0

2-fluoro-2,2-dinitroethylchloroformate, pentafluorosulfanylimine

139649-73-3

N-(2-hydroxyethyl)-2-fluoro-2,2-dinitroethyl carbamate, pentafluorosulfanylimine

Conditions
ConditionsYield
In dichloromethane at 0℃; for 1.5h;100%
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    Monoethanolamine

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    Monoethanolamine Chemical Formula:H2NCH2CH2OH Synonyms:2-aminoethanol (MEA) Items Specification  Appearance  Colorless, clear liquid  Purity (min)&

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    Ethanolamine

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    Product Description Product name Ethanolamine CAS 141-43-5 Assay 99% Appearance Colorless liquid

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Chemistry

The molecular structure of Ethanolamine (CAS No. 141-43-5):

IUPAC Name: 2-Aminoethanol
Molecular Formula: C2H7NO
Molecular Weight: 61.10g/mol
EINECS: 205-483-3
Melting Point: 10.3 ºC
Freely Rotating Bonds: 3
Polar Surface Area: 46.25 Å2
Index of Refraction: 1.435
Molar Refractivity: 16.38 cm3
Molar Volume: 62.7 cm3
Polarizability: 6.49 ×10-24cm3
Surface Tension: 39.7 dyne/cm
Density: 0.973 g/cm3
Flash Point: 93.3 °C 
Melting point: 10-11 °C(lit.)
Enthalpy of Vaporization: 47.43 kJ/mol
Boiling Point: 170.9 °C at 760 mmHg
Vapour Pressure: 0.458 mmHg at 25°C
EINECS: 205-483-3
Product Categories: Pharmaceutical Intermediates; Thanolamine Series; omega-Aminoalkanols; omega-Functional Alkanols, Carboxylic Acids, Amines & Halides

Production

  Ethanolamine (CAS NO.141-43-5) is produced by reacting ethylene oxide with aqueous ammonia; the reaction also produces diethanolamine and triethanolamine.

Toxicity Data With Reference

1.    

ratLD50:1500mg/kg

    Gigiena Truda i Professional'nye Zabolevaniya. Labor Hygiene and Occupational Diseases. Vol. 23(9), Pg. 55, 1979.
2.    

ratLD50:1720mg/kg

    Toxicology and Applied Pharmacology. Vol. 42, Pg. 417, 1977.
3.    

rabbitLD50:1mL/kg

    Union Carbide Data Sheet. Vol. 1/13/1972,
4.    

mouseLD50:700mg/kg

    Toksikologiya Novykh Promyshlennykh Khimicheskikh Veshchestv. Toxicology of New Industrial Chemical Substances. For English translation, see TNICS*. Vol. 4, Pg. 81, 1962.

Safety Profile

Hazard Codes: ToxicCorrosiveC  
Risk Statements: 20/21/22-34-39/23/24/25-23/24/25-10
R20/21/22: Harmful by inhalation, in contact with skin and if swallowed. 
R34: Causes burns. 
R23/24/25: Toxic by inhalation, in contact with skin and if swallowed. 
R10: Flammable.
Safety Statements: 26-36/37/39-45
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. 
S36/37/39: Wear suitable protective clothing, gloves and eye/face protection. 
S45: In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.)
RIDADR: UN 2924 3/PG 3
WGK Germany: 1
RTECS: KJ5775000
F: 8-10-23
HazardClass: 8
PackingGroup: III

Specification

  Ethanolamine , with CAS number of 141-43-5, can be called 1-Amino-2-hydroxyethane ; 2-Amino-1-ethanol ; 2-Aminoaethanol ; EPA Pesticide Chemical Code 011601 ; Glycinol (monoethanolamine) ; Monoaethanolamin ; Monoethanolamine . It can be used in organic synthesis.The extinguishing agent of Ethanolamine (CAS NO.141-43-5) are dry powder, foam, sand, carbon dioxide, water mist.