Substance profile
2,2'-iminodiethanol
2,2'-iminodiethanol is a faintly colored, viscous liquid or deliquescent prisms with a mild, ammonia-like odor.
01 · Identification
What 2,2'-iminodiethanol is
2,2'-iminodiethanol is a faintly colored, viscous liquid or deliquescent prisms with a mild, ammonia-like odor. It boils at 269 °C, melts at 27.9 °C, is miscible with water.
Under the GHS it carries the signal word Danger. It is classed as hazardous Air Pollutants (HAPs).
Other names for 2,2'-iminodiethanol
- diethanolamine
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 |
|---|---|
| H302 | Harmful if swallowed. |
| H373 | May cause damage to organs <or state all organs affected, if known> through prolonged or repeated exposure <state route of exposure if it is conclusively proven that no other routes of exposure cause the hazard>. |
| H315 | Causes skin irritation. |
| H318 | Causes serious eye damage. |
Precautionary statements: P260, P264, P270, P280, P301, P302, P305, P310, P312, P313, P314, P330, P332, P338, P352
This page lists only the codes assigned to 2,2'-iminodiethanol. The full reference lives on the hazard statements hub, the precautionary statements hub and the GHS pictograms hub.
03 · Physical and chemical properties
2,2'-iminodiethanol 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 | 268.8 °C (515.8 °F) | HSDB | |
| 269 °C (516.2 °F) | ICSC | ||
| 268.8 °C (515.8 °F) | at 760 mmHg | DOE PAC | |
| Melting point | 27.9 °C (82.2 °F) | HSDB | |
| 27.78 °C (82 °F) | NIOSH | ||
| Density | 1.1 g/cm³ | NIOSH | |
| 1.09 g/cm³ | liquid | ICSC | |
| 1.0966 g/cm³ | at 20 °C | HSDB | |
| Solubility | Very soluble in water, ethanol; slightly soluble in ethyl ether, benzene | HSDB | |
| Miscible (1X10+6 mg/L) with water at 20 °C | at 20 °C | HSDB | |
| Vapor pressure | 0.00028 mmHg | at 25 °C | HSDB |
| 0.01 mmHg | below this value | NIOSH | |
| Flash point | 134 °C (273.2 °F) | Open cup | HSDB |
| 172.22 °C (342 °F) | HSDB | ||
| 137.22 °C (279 °F) | NIOSH | ||
| Autoignition temperature | 662.22 °C (1224 °F) | HSDB | |
| 662 °C (1223.6 °F) | ICSC | ||
| Lower explosive limit (LEL) | 1.6 % by volume | calculated | HSDB |
| 1.6 % by volume | NIOSH | ||
| Upper explosive limit (UEL) | 9.8 % by volume | estimated | HSDB |
| 9.8 % by volume | NIOSH | ||
| Vapor density | 3.65 (air = 1) | HSDB |
Values compiled from PubChem Laboratory Chemical Safety Summary. Temperatures converted to Fahrenheit for reference.
04 · Source notes
Further notes on 2,2'-iminodiethanol
These are descriptions rather than measured values, so they are kept out of the table above and quoted here with the source that reported them.
Solubility
Miscible with methanol. acetone, alcohol, chloroform, glycerin. Solubility at 25 °C in benzene: 4.2%; in ether: 0.8%; in carbon tetrachloride: <0.1%; in heptane: <0.1%. Slightly soluble to insoluble in petroleum ether.
Source: HSDB
05 · Handling and storage
Storing and handling 2,2'-iminodiethanol
Storage conditions
Keep container tightly closed in a dry and well-ventilated place. Containers which are opened must be carefully resealed and kept upright to prevent leakage. Air sensitive.
Source: Hazardous Substances Data Bank (HSDB)
Incompatible materials
DEA (Diethanolamine) degrades in the presense of carbon dioxide to yield HEOD [3-(2-hydroxy-ethyl)oxazolidone], THEED [N,N,N,'-(2-hydroxyethyl)ethyleen-diamine] and BHEP [N,N'-bis(2-hydroxyethyl)piperazine.
Source: Hazardous Substances Data Bank (HSDB)
Reactivity
DIETHANOLAMINE 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 is hygroscopic. It may be sensitive to exposure to air and light. This compound can react with oxidizing materials, acids, CO2, copper alloys, aluminum, zinc, galvanized iron and copper. (NTP, 1992)
Source: CAMEO Chemicals
Planning storage for a mix of chemicals? Check 2,2'-iminodiethanol in the storage compatibility matrix →
Safety Data Sheet
Getting an SDS for 2,2'-iminodiethanol
A Safety Data Sheet is written for a product, not for a substance: the supplier of the grade you actually buy issues it, so two suppliers of 2,2'-iminodiethanol issue two different sheets. That is why there is no single authoritative SDS for a substance to download — what there is, is the job of collecting the sheets for the products you hold and keeping them current as suppliers revise them.
Nearby
Substances next to 2,2'-iminodiethanol
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