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2-Methylaminoethanol

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Name

2-Methylaminoethanol

EINECS 203-710-0
CAS No. 109-83-1 Density 0.89 g/cm3
PSA 32.26000 LogP -0.41100
Solubility miscible with water Melting Point -3 °C
Formula C3H9NO Boiling Point 155.5 °C at 760 mmHg
Molecular Weight 75.1106 Flash Point 72.8 °C
Transport Information UN 2735 8/PG 2 Appearance viscous colourless or light yellow liquid
Safety 26-36/37/39-45 Risk Codes 21/22-34
Molecular Structure Molecular Structure of 109-83-1 (2-Methylaminoethanol) Hazard Symbols CorrosiveC
Synonyms

(2-Hydroxyethyl)methylamine;(Hydroxyethyl)methylamine;2-Hydroxy-N-methylethylamine;2-Hydroxyethyl-N-methylamine;2-Methylamino-1-ethanol;2-N-Monomethylaminoethanol;Amietol M 11;AminoAlcohol MMA;Methyl(2-hydroxyethyl)amine;Methyl(hydroxyethyl)amine;Methyl(b-hydroxyethyl)amine;Methylaminoethanol;Methylethanolamine;Methylethylolamine;Monomethylaminoethanol;Monomethylethanolamine;N-Methyl-N-(2-hydroxyethyl)amine;N-Methylaminoethanol;N-Methylmonoethanolamine;N-Monomethylaminoethanol;N-Monomethylethanolamine;NMEA;NSC 62776;Yubao;b-(Methylamino)ethanol;

Article Data 75

2-Methylaminoethanol Synthetic route

75-21-8

oxirane

74-89-5

methylamine

A

109-83-1

(2-hydroxyethyl)(methyl)amine

B

105-59-9

N-Methyldiethanolamine

C

68998-54-9

2,2'-((1-hydroxypropan-2-yl)azanediyl)bis(ethan-1-ol)

Conditions
ConditionsYield
water at 62.84 - 71.84℃; under 7500.75 Torr; for 0.2h; Heating / reflux;A 16.7%
B 83.3%
C n/a
at 66.84 - 76.84℃; under 9000.9 Torr; for 0.116667h; Heating / reflux;A 63.5%
B 36.4%
C 0.02%
water at 61.54 - 63.34℃; under 7500.75 Torr; for 0.2h; Heating / reflux;
at 66.34℃; under 9000.9 Torr; for 0.116667h; Heating / reflux;
101-98-4

2-(N-benzyl-N-methyl)amino-1-ethanol

109-83-1

(2-hydroxyethyl)(methyl)amine

Conditions
ConditionsYield
With ammonium formate; palladium on activated charcoal In methanol for 0.166667h; Heating;83%
With hydrogen; Pd/C (5percent) In ethanol at 20℃; for 2h;67%
With hydrazine hydrate; palladium on activated charcoal In ethanol for 2h; Heating;42%
39931-24-3

4-methyl-1-oxa-4-azaspiro<4.5>decane

A

109-83-1

(2-hydroxyethyl)(methyl)amine

B

51265-33-9

1-methyl-4,5,6,7-tetrahydro-1H-indole

C

108-93-0

cyclohexanol

Conditions
ConditionsYield
With potassium hydroxide Heating; CH3ONa sa reagent;A n/a
B 72%
C n/a
50-00-0

formaldehyd

141-43-5

ethanolamine

109-83-1

(2-hydroxyethyl)(methyl)amine

Conditions
ConditionsYield
Stage #1: formaldehyd; ethanolamine With zinc(II) chloride In dichloromethane at 20℃; for 1h;
Stage #2: With sodium tetrahydroborate In dichloromethane for 18h;
72%
Stage #1: formaldehyd; ethanolamine
Stage #2: With sodium tetrahydroborate
141-43-5

ethanolamine

77-78-1

dimethyl sulfate

109-83-1

(2-hydroxyethyl)(methyl)amine

Conditions
ConditionsYield
With methyllithium In tetrahydrofuran for 1h; Product distribution; Ambient temperature; further reagents investigated;66%
107-21-1

ethylene glycol

74-89-5

methylamine

A

106-58-1

N,N'-dimethylpiperazine

B

109-83-1

(2-hydroxyethyl)(methyl)amine

C

110-70-3

N,N`-dimethylethylenediamine

Conditions
ConditionsYield
With 1-methyl-pyrrolidin-2-one; tris(triphenylphosphine)ruthenium(II) chloride at 130℃; Product distribution; Mechanism; other primary amines, other temperatures, other catalyst;A 33%
B 4%
C 44%
75-21-8

oxirane

74-89-5

methylamine

109-83-1

(2-hydroxyethyl)(methyl)amine

Conditions
ConditionsYield
In ethanol; water at 30 - 40℃;30%
288-42-6

oxazol

109-83-1

(2-hydroxyethyl)(methyl)amine

Conditions
ConditionsYield
With potassium hydroxide; aluminum nickel for 26.1h;28%
67-56-1

methanol

141-43-5

ethanolamine

A

151-56-4

ethyleneimine

B

110-85-0

piperazine

C

280-57-9

1,4-diaza-bicyclo[2.2.2]octane

D

109-83-1

(2-hydroxyethyl)(methyl)amine

Conditions
ConditionsYield
With Cs-P-Si mixed-oxide at 300℃; under 750.06 Torr; Title compound not separated from byproducts;A 37 % Chromat.
B n/a
C n/a
D 6%
67-56-1

methanol

141-43-5

ethanolamine

A

110-85-0

piperazine

B

280-57-9

1,4-diaza-bicyclo[2.2.2]octane

C

109-83-1

(2-hydroxyethyl)(methyl)amine

Conditions
ConditionsYield
With H-β-zeolite at 250℃; under 750.06 Torr; Title compound not separated from byproducts;A n/a
B n/a
C 2%

2-Methylaminoethanol Chemical Properties

Chemical Name: 2-Methylaminoethanol          
IUPAC NAME: 2-(methylamino)ethanol            
CAS No.: 109-83-1
Molecular Formula: C3H9NO
Formula Weight: 75.11 g/mol
Structure:
               
The synonyms of 2-Methylaminoethanol (CAS NO.109-83-1): Methylethanolamine ; N-Methylethanolamine ; N-Methyl(b-hydroxyethyl)mine ; Methylethylolamine ; 2-(Methylamino)ethanol ; (2-Hydroxyethyl)methylamine ; (Hydroxyethyl)methylamine 
Polar Surface Area: 32.26 Å2
Index of Refraction: 1.413
Molar Refractivity: 21.07 cm3
Molar Volume: 84.3 cm3
Surface Tension: 29.2 dyne/cm 
Enthalpy of Vaporization: 45.68 kJ/mol 
Vapour Pressure: 1.1 mmHg at 25°C
Density of 2-Methylaminoethanol (CAS NO.109-83-1): 0.935 g/mL at 25 °C
Boiling Point: 159 °C
Flash Point: 76 °C
Appearance: viscous colourless or light yellow liquid, fishy odor.
Stability: Stable under normal temperatures and pressures. but incompatible with strong oxidizing agents.Combustible.

2-Methylaminoethanol Uses

  2-Methylaminoethanol (CAS NO.109-83-1) is used as a chemical intermediate for pharmaceuticals and in textile industry.

2-Methylaminoethanol Toxicity Data With Reference

Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
mouse LD50 intraperitoneal 125mg/kg (125mg/kg)   National Technical Information Service. Vol. AD277-689,
mouse LD50 subcutaneous 1802mg/kg (1802mg/kg) BEHAVIORAL: CONVULSIONS OR EFFECT ON SEIZURE THRESHOLD

LUNGS, THORAX, OR RESPIRATION: OTHER CHANGES

BEHAVIORAL: COMA
Naunyn-Schmiedeberg's Archiv fuer Experimentelle Pathologie und Pharmakologie. Vol. 225, Pg. 428, 1955.
rabbit LD50 skin 1070uL/kg (1.07mL/kg) BEHAVIORAL: SOMNOLENCE (GENERAL DEPRESSED ACTIVITY)

LUNGS, THORAX, OR RESPIRATION: OTHER CHANGES

SKIN AND APPENDAGES (SKIN): "DERMATITIS, OTHER: AFTER SYSTEMIC EXPOSURE"
National Technical Information Service. Vol. OTS0536158,
rat LD50 intraperitoneal 1330mg/kg (1330mg/kg)   Toxicology and Applied Pharmacology. Vol. 12, Pg. 486, 1968.
rat LD50 oral 1391mg/kg (1391mg/kg) SENSE ORGANS AND SPECIAL SENSES: CHROMODACYRORREA: EYE

BEHAVIORAL: ATAXIA

GASTROINTESTINAL: "HYPERMOTILITY, DIARRHEA"
Veterinary and Human Toxicology. Vol. 38, Pg. 422, 1996.

2-Methylaminoethanol Consensus Reports

Reported in EPA TSCA Inventory.

2-Methylaminoethanol Safety Profile

Hazard Codes: CorrosiveC
Risk Statements: 21/22-34 
R21/22: Harmful in contact with skin and if swallowed. 
R34: Causes burns.
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 2735 8/PG 2
WGK Germany: 1
RTECS: KL6650000
HazardClass: 8
PackingGroup: III
HS Code: 29221980
Poison by intraperitoneal route. Moderately toxic by ingestion and subcutaneous routes. A corrosive irritant to skin, eyes, and mucous membranes. Flammable when exposed to heat, flame, or oxidizers. To fight fire, use alcohol foam. When heated to decomposition it emits toxic fumes such as NOx. See also AMINES and ALCOHOL, DENATURED; ALCOHOLS, C6-12; ALCOHOLS, C9-11; ALCOHOLS, C12-13, ETHOXYLATED; ALCOHOLS, C12-15, ETHOXYLATED; ALCOHOLS, C12-16, ETHOXYLATED; ALCOHOLS, C14-15, ETHOXYLATED; ALCOHOLS, C16-18, ETHOXYLATED; ALCOHOLS, C8-10, ETHOXYLATED PROPOXYLATED; ALCOHOLS, C12-15, ETHOXYLATED PROPOXYLATED; ALCOHOLS, N.O.S..

2-Methylaminoethanol Specification

Storage: Store in a cool, dry place. Keep away from direct sunlight. Keep container closed when not in use.
Handling: Do not ingest or inhale. Do not breathe dust, vapor, mist, or gas. Do not get in eyes, on skin, or on clothing. Use only in a chemical fume hood. 
 

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