ChemicalBook >> CAS DataBase List >>N-Methyldiethanolamine


Chemical Name:
MDEA;METHYL DIETHANOLAMINE;Methyldiethanolamin;Methyliminodiethanol;FC MDEA;usafdo-52;USAF DO-52;Mdea (diol);Diethanolmethylamine;N-Methyldiethanolami
Molecular Formula:
Molecular Weight:
MDL Number:
MOL File:
Modify Date:2022-12-21 16:56:50

N-Methyldiethanolamine Properties

Melting point -21 °C
Boiling point 246-248 °C(lit.)
Density 1.038 g/mL at 25 °C(lit.)
vapor density 4 (vs air)
vapor pressure 0.01 mm Hg ( 20 °C)
refractive index n20/D 1.469(lit.)
Flash point 260 °F
storage temp. Store below +30°C.
form Liquid
pka 14.41±0.10(Predicted)
color Clear colorless to light yellow
PH 11.5 (100g/l, H2O, 20℃)
Odor Ammonical
PH Range 11.5 at 100 g/l at 20 °C
explosive limit 0.9-8.4%(V)
Viscosity 99.05mm2/s
Water Solubility MISCIBLE
BRN 1734441
Stability Stable. Combustible. Incompatible with strong oxidizing agents.
LogP -1.16 at 23℃
Indirect Additives used in Food Contact Substances N-METHYLDIETHANOLAMINE
CAS DataBase Reference 105-59-9(CAS DataBase Reference)
NIST Chemistry Reference Methyldiethanolamine(105-59-9)
EPA Substance Registry System N-Methyldiethanolamine (105-59-9)


Risk and Safety Statements

Symbol(GHS)  GHS hazard pictograms
Signal word  Warning
Hazard statements  H319
Precautionary statements  P264-P280-P305+P351+P338-P337+P313
Hazard Codes  Xi
Risk Statements  36
Safety Statements  24
RIDADR  2735
WGK Germany  1
RTECS  KL7525000
Autoignition Temperature 770 °F
HS Code  2922 17 00
HazardClass  8
PackingGroup  II
Toxicity LD50 orally in Rabbit: 4680 mg/kg
NFPA 704
1 0

N-Methyldiethanolamine price More Price(11)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 471828 N-Methyldiethanolamine ≥99% 105-59-9 2l $89.2 2023-01-07 Buy
Sigma-Aldrich 471828 N-Methyldiethanolamine ≥99% 105-59-9 18l $510 2023-01-07 Buy
Alfa Aesar L15712 N-Methyldiethanolamine, 98+% 105-59-9 100g $24.78 2023-01-06 Buy
Alfa Aesar L15712 N-Methyldiethanolamine, 98+% 105-59-9 500g $48.83 2023-01-06 Buy
Sigma-Aldrich 471828 N-Methyldiethanolamine ≥99% 105-59-9 25ml $27.7 2023-01-07 Buy
Product number Packaging Price Buy
471828 2l $89.2 Buy
471828 18l $510 Buy
L15712 100g $24.78 Buy
L15712 500g $48.83 Buy
471828 25ml $27.7 Buy

N-Methyldiethanolamine Chemical Properties,Uses,Production

Chemical Properties

N-Methyldiethanolamine (MDEA) is a colorless to yellow viscous liquid with an ammonia-like odor. It is completely soluble in water. N-Methyldiethanolamine is an alkyl alkanolamine.It combines the chemical characteristics of both amines and alcohols so that it is capable of undergoing reactions typical of both alcohols and amines: forming quaternary amine salts, soaps, and esters.


N-Methyldiethanolamine is a reagent used for protection of boronic acids as N-methyl-O,O-diethanolamine esters.


N-methyldiethanolamine is used as an intermediate in the synthesis of numerous products. Its unique chemistry has resulted in its use in diverse areas, including coatings, textile lubricants, polishes, detergents, pesticides, personal-care products, pharmaceuticals, urethane catalysts, and water-treatment chemicals. It is also used in absorption of acidic gases, catalyst for polyurethane foams, pH control agent.


N-methyldiethanolamine is produced by the reaction between ethylene oxide and methylamine.
Preparation of N-methyldiethanolamine

Synthesis Reference(s)

Journal of the American Chemical Society, 107, p. 6659, 1985 DOI: 10.1021/ja00309a039

General Description

Colorless liquid.

Air & Water Reactions

Very water soluble .

Reactivity Profile

N-Methyldiethanolamine is an aminoalcohol. Amines are chemical bases. They neutralize acids to form salts plus water. These acid-base reactions are exothermic. The amount of heat that is evolved per mole of amine in a neutralization is largely independent of the strength of the amine as a base. Amines may be incompatible with isocyanates, halogenated organics, peroxides, phenols (acidic), epoxides, anhydrides, and acid halides. Flammable gaseous hydrogen is generated by amines in combination with strong reducing agents, such as hydrides. N-Methyldiethanolamine may react with oxidizing materials.

Health Hazard

Exposure can cause irritation of eyes, nose and throat.

Fire Hazard

Special Hazards of Combustion Products: Irritating vapors and toxic gases, such as nitrogen oxides and carbon monoxide, may be formed when involved in fire.

Flammability and Explosibility


Environmental Fate

N-methyldiethanolamine is readily biodegradable, and its bioconcentration potential is low. Releases to the environment would not persist and would degrade rapidly. The potential for mobility in soil is very high. It is slightly toxic to aquatic organisms on an acute basis.


N-methyldiethanolamine is stable under normal storage and use conditions, but elevated temperatures can cause it to decompose. Decomposition products depend upon temperature, air supply, and the presence of other materials. Avoid contact with nitrites, strong acids, and strong oxidizers. Avoid unintended contact with halogenated hydrocarbons. N-methyldiethanolamine can react with halogenated organics, resulting in temperature and/or pressure increases. It is corrosive when wet. Heating above 60°C (140°F) in the presence of aluminum can result in corrosion and generation of flammable hydrogen gas.

N-Methyldiethanolamine Preparation Products And Raw materials

Global( 345)Suppliers
Supplier Tel Email Country ProdList Advantage
Henan Tianfu Chemical Co.,Ltd.
+86-0371-55170693 +86-19937530512 China 21975 55
Hefei TNJ Chemical Industry Co.,Ltd.
0551-65418679 China 2990 55
Hubei Jusheng Technology Co.,Ltd.
86-18871470254 CHINA 28185 58
Hubei xin bonus chemical co. LTD
86-13657291602 CHINA 22973 58
Shanghai Longyu Biotechnology Co., Ltd.
+8615821988213 China 2511 58
0371-55170695 CHINA 26700 58
+8618523575427 China 47427 58
career henan chemical co
+86-0371-86658258 China 29827 58
Shaanxi Dideu Medichem Co. Ltd
+86-029-87569262 +8615319740599 China 3981 58
Zhuozhou Wenxi import and Export Co., Ltd
+8613111626072 CHINA 13170 58

View Lastest Price from N-Methyldiethanolamine manufacturers

Image Update time Product Price Min. Order Purity Supply Ability Manufacturer
N-Methyldiethanolamine pictures 2023-01-30 N-Methyldiethanolamine
US $1.00 / KG/CTN 10g 99 % 10000kg Hebei Crovell Biotech Co Ltd
N-Methyldiethanolamine pictures 2023-01-29 N-Methyldiethanolamine
US $66.00 / kg 1kg 99% 20MT Hebei baicao biology science and technology co., ltd
N-Methyldiethanolamine pictures 2022-12-23 N-Methyldiethanolamine
US $1050.00 / KG 200KG 98% 1-100mt Baoji Guokang Bio-Technology Co., Ltd.
N,N-BIS(2-HYDROXYETHYL)METHYLAMINE N-METHYL-2,2'-IMINODIETHANOL N-METHYL-2,2-IMINOBIS(ETHANOL) N-METHYLDIETHANOLAMINE N-METHYL-N-(2-HYDROXYETHYL)-2-AMINOETHANOL BIS(2-HYDROXYETHYL)METHYLAMINE 2-(N-2-Hydroxyethyl-N-methylamino)ethanol 2,2’-(methylimino)bis-ethano 2,2’-(methylimino)bis-Ethanol 2,2’-(methylimino)di-ethano Diethanolmethylamine Ethanol, 2,2'-(methylimino)bis- Ethanol, 2,2'-(methylimino)di- Ethanol,2,2’-(methylimino)bis- Mdea (diol) Methylbis(2-hydroxyethyl)amine 2,2'-METHYLIMINODIETHANOL USAF DO-52 usafdo-52 N-Methyldiethanolami FC MDEA METHYL DIETHANLAMINE N-Methylediethanolamine ACTIVATED METHYL DI ETHANOL AMINE (MDEA) MethylDiethanolamine(Mdea) N-METHYLDIETHANOLAMINE (controlled chemical) N-Methyldiethanolamin N-Methyldiethanolamine, 98+% 2,2'-(methylimino)diethanol N-methyldiethanolamine 2,2μ-Methyliminodiethanol, N,N-Bis(2-hydroxyethyl)methylamine, MDEA N-Methyl-N,N-diethanolamine N-METHYLDIETHANOLAMINE, 99+% N-(2-Hydroxyethyl)-N-methylethanolam n,n-di(2-hydroxyethyl)-n-methylamine N-Methylaminodiglycol N-Methyl-di(-hydroxyethyl)amine N-Methyldiethanolimine N-Methylimino-2,2'-diethanol N-Methyliminodiethanol N-METHYLDIETHANOLAMINE (MDEA) N-Methyldiethanolamine N-Methyldiethanolamine (105-59-9) 2,2'-(Methylazanediyl)diethanol UCARSOL NM-608(MethyldiethanolaMine) N-METHYL-2,2'-IMINODIETHANOL FOR SYNTHES N-Methyl-2,2'-iminodiethanol for synthesis 2-[2-hydroxyethyl(methyl)amino]ethanol N-Methyl diethanolamine N-Methyldiethanolamine N-Methyldiethanolamine ISO 9001:2015 REACH N-METHYLDIETHANOLAMINE For Synthesis METHYL DIETHANOLAMINE MDEA Methyldiethanolamin Methyliminodiethanol N-Methyldiethandamine 105-59-9 CH3NCH2CH2OH2 Oxygen Compounds