105-59-9
Product Name:
N-Methyldiethanolamine
Formula:
C5H13NO2
Synonyms:
N,N-Bis(2-hydroxyethyl)methylamine;2,2′-Methyliminodiethanol;MDEA;N-Methyl-2,2′-iminodiethanol;N-Methyldiethanolamine, N-Methyl-2,2-iminobis(ethanol)
Inquiry
CHEMICAL AND PHYSICAL PROPERTIES
| Physical Description | Methyldiethanolamine is a colorless liquid. (USCG, 1999) |
|---|---|
| Color/Form | Colorless liquid |
| Odor | Amine-like odor |
| Boiling Point | 477 °F at 760 mmHg (NTP, 1992) |
| Melting Point | -6 °F (NTP, 1992) |
| Flash Point | 260 °F (NTP, 1992) |
| Solubility | Very soluble (NTP, 1992) |
| Density | 1.0377 at 68 °F (USCG, 1999) - Denser than water; will sink |
| Vapor Density | Relative vapor density (air = 1): 4.12 |
| Vapor Pressure | less than 0.01 mmHg at 68 °F (NTP, 1992) |
| LogP | -1.08 |
| Stability/Shelf Life | Stable under recommended storage conditions. |
| Autoignition Temperature | 265 °C |
| Decomposition | When heated to decomposition it emits toxic fumes of /nitrogen oxides/. |
| Viscosity | 101 mPa-sec at 20 °C |
| Heat of Vaporization | 418.7 kJ/kg |
| Surface Tension | 40.9 mN/m at 20.3 °C |
| Refractive Index | Index of refraction = 1.4685 at 20 °C |
| Dissociation Constants | pKa = 8.52 (conjugate acid) |
| Chemical Classes | Nitrogen Compounds -> Ethanolamines |
SAFETY INFORMATION
| Signal word | Warning |
|---|---|
| Pictogram(s) |
 Exclamation Mark Irritant GHS07 |
| GHS Hazard Statements |
H319:Serious eye damage/eye irritation |
| Precautionary Statement Codes |
P264:Wash hands thoroughly after handling. P264:Wash skin thouroughly after handling. P280:Wear protective gloves/protective clothing/eye protection/face protection. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. P337+P313:IF eye irritation persists: Get medical advice/attention. |
COMPUTED DESCRIPTORS
| Molecular Weight | 119.16 g/mol |
|---|---|
| XLogP3 | -1.1 |
| Hydrogen Bond Donor Count | 2 |
| Hydrogen Bond Acceptor Count | 3 |
| Rotatable Bond Count | 4 |
| Exact Mass | 119.094628657 g/mol |
| Monoisotopic Mass | 119.094628657 g/mol |
| Topological Polar Surface Area | 43.7 Ų |
| Heavy Atom Count | 8 |
| Formal Charge | 0 |
| Complexity | 43.7 |
| Isotope Atom Count | 0 |
| Defined Atom Stereocenter Count | 0 |
| Undefined Atom Stereocenter Count | 0 |
| Defined Bond Stereocenter Count | 0 |
| Undefined Bond Stereocenter Count | 0 |
| Covalently-Bonded Unit Count | 1 |
| Compound Is Canonicalized | Yes |
PRODUCT INTRODUCTION
description
Methyldiethanolamine is a colorless liquid. (USCG, 1999)