Substance profile
2,2'-(methylimino)diethanol
2,2'-(methylimino)diethanol is a colorless liquid with an amine-like odor.
01 · Identification
What 2,2'-(methylimino)diethanol is
2,2'-(methylimino)diethanol is a colorless liquid with an amine-like odor. Its molecular formula is C5H13NO2 and its molecular weight is 119.16 g/mol. It boils at 245 °C, melts at -21 °C.
Under the GHS it carries the signal word Warning.
Other names for 2,2'-(methylimino)diethanol
- N-methyldiethanolamine
02 · GHS classification
Hazards and label elements
Harmonised classification under CLP Annex VI. This is the legally binding classification in the EU; other jurisdictions may differ.
| Code | Hazard statement |
|---|---|
| H319 | Causes serious eye irritation. |
Precautionary statements: P264, P280, P305, P313, P337, P338
03 · Physical and chemical properties
2,2'-(methylimino)diethanol properties
Every value is shown with the conditions it was measured under and the source it came from. Where sources disagree, all values are listed rather than one being picked — the difference is usually a different form of the substance, not an error.
| Property | Value | Conditions | Source |
|---|---|---|---|
| Boiling point | 245 °C (473 °F) | HSDB | |
| 247.22 °C (477 °F) | at 760 mmHg | CAMEO | |
| 247 °C (476.6 °F) | ICSC | ||
| Melting point | -21 °C (-5.8 °F) | HSDB | |
| -21.11 °C (-6 °F) | CAMEO | ||
| Density | 1.04 g/cm³ | ICSC | |
| 1.0377 g/cm³ | at 20 °C | CAMEO | |
| 1.043 g/cm³ | at 25 °C | HSDB | |
| Solubility | In water, 1.0X10+6 mg/L, temp not specified (miscible) | HSDB | |
| Miscible with water | HSDB | ||
| Very soluble in water | HSDB | ||
| Vapor pressure | 0.0002 mmHg | at 25 °C | HSDB |
| 0.000225 mmHg | at 25 °C | ICSC | |
| 0.01 mmHg | below this value, at 20 °C | CAMEO | |
| Flash point | 127 °C (260.6 °F) | HSDB | |
| 126.67 °C (260 °F) | HSDB | ||
| Autoignition temperature | 265 °C (509 °F) | ICSC | |
| Lower explosive limit (LEL) | 0.9 % by volume | ICSC | |
| Upper explosive limit (UEL) | 8.4 % by volume | ICSC | |
| Vapor density | 4.12 (air = 1) | ICSC |
Values compiled from PubChem Laboratory Chemical Safety Summary. Temperatures converted to Fahrenheit for reference.
04 · Handling and storage
Storing and handling 2,2'-(methylimino)diethanol
Storage conditions
Keep container tightly closed in a dry and well-ventilated place.
Source: Hazardous Substances Data Bank (HSDB)
Incompatible materials
Incompatible materials: Oxidizing agents. Do not store near acids.
Source: Hazardous Substances Data Bank (HSDB)
Reactivity
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. This compound may react with oxidizing materials. (NTP, 1992)
Source: CAMEO Chemicals
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