N-MethyldiethanolaMine

Name: N-MethyldiethanolaMine
SKU: 0

CAS No.: 105-59-9
Molecular Formula: C5H13NO2
Molecular Weight: 119.16

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product description

N‑Methyldiethanolamine, commonly abbreviated as MDEA, is a colorless or pale yellow viscous liquid with a mild amine odor. It is a tertiary alkanolamine widely used in gas treatment, chemical synthesis, and industrial processing.

Chemical Properties

Property	Value
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 condition	Store below +30°C.
Solubility	Soluble in chloroform (slightly), methanol (slightly)
Acid dissociation constant (pKa)	14.41±0.10 (Predicted)
Form	Liquid
Color	Clear colorless to pale yellow
Odor	Ammonia-like
pH value	11.5 (100g/l, H₂O, 20°C)
pH range (indicator)	11.5 at 100 g/l at 20 °C
Explosive limit	0.9-8.4%(V)
Water solubility	MISCIBLE
BRN	1734441
Stability	Stable. Combustible. Incompatible with strong oxidizing agents.
Cosmetic ingredient function	FILM FORMING
InChI	1S/C5H13NO2/c1-6(2-4-7)3-5-8/h7-8H,2-5H2,1H3
InChIKey	CRVGTSFCCXCTH-UHFFFAOYSA-N
SMILES	N(CO)(CO)C(C)O
LogP	-1.16 at 23°C
Surface tension	33.5 mN/m at 303.15K
CAS database	105-59-9 (CAS DataBase Reference)
NIST chemical substance information	Methyldiethanolamine (105-59-9)
EPA chemical substance information	N-Methyldiethanolamine (105-59-9)

Safety Information

Property	Value
Hazard symbol	Xi
Hazard class code	36
Safety description	24
UN dangerous goods number	2735
WGK Germany	1
RTECS number	KL7525000
Autoignition temperature	770 °F
TSCA	TSCA listed
HS code	2922 17 00
Hazard class	8
Packing group	II
Storage class	10 - Combustible liquids
Hazard class (category)	Eye irritation, Category 2
Hazardous substances data	105-59-9 (Hazardous Substances Data)
Toxicity	LD50 orally in Rabbit: 4680 mg/kg

Product Usage

N-MethyldiethanolaMine is an important organic amine compound with wide industrial applications. In natural gas and refinery gas purification, it serves as a selective acid gas removal agent, efficiently absorbing hydrogen sulfide while minimizing co-absorption of carbon dioxide, thereby reducing energy consumption. In the coatings and polyurethane industries, it acts as a neutralizing agent and catalyst, used for pH adjustment in water-based coatings and for rigid foam production. Additionally, it is used as an intermediate in textile and pharmaceutical synthesis, as well as in flue gas desulfurization and as a rust inhibitor additive in metalworking fluids.

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Shipping And Transportation

Delivery Time

Inventory 2-3 working days New manufacturing 7-10 working days

Mode of Transportation
1. By Air, fast but expensive.
2. By Sea, usual and economy.
3. By Train, suit for middle Asia countries.
4. By Express, suit for small package.
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