Substance profile
Ethylenediamine
Ethylenediamine is a water-white liquid with an ammonia-like odor.
01 · Identification
What Ethylenediamine is
Ethylenediamine is a water-white liquid with an ammonia-like odor. Its molecular formula is C2H8N2 and its molecular weight is 60.1 g/mol. It boils at 116 °C, melts at 8.5 °C.
Under the GHS it carries the signal word Danger. It is classed as corrosives.
Other names for Ethylenediamine
- 1,2-diaminoethane
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 |
|---|---|
| H226 | Flammable liquid and vapour. |
| H312 | Harmful in contact with skin. |
| H302 | Harmful if swallowed. |
| H314 | Causes severe skin burns and eye damage. |
| H334 | May cause allergy or asthma symptoms or breathing difficulties if inhaled. |
| H317 | May cause an allergic skin reaction. |
Precautionary statements: P210, P233, P241, P242, P260, P261, P270, P272, P280, P301, P302, P310, P312, P313, P330, P331, P333, P352, P403
03 · Physical and chemical properties
Ethylenediamine 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 | 116.11 °C (241 °F) | NIOSH | |
| 116.11 °C (241 °F) | at 760 mmHg | CAMEO | |
| 117 °C (242.6 °F) | ICSC | ||
| Melting point | 8.5 °C (47.3 °F) | HSDB | |
| 8.33 °C (47 °F) | NIOSH | ||
| 7.78 °C (46 °F) | CAMEO | ||
| Density | 0.91 g/cm³ | NIOSH | |
| 0.898 g/cm³ | at 25 °C | HSDB | |
| Solubility | Sol in benzene unless insufficiently dried; slightly sol in ether | HSDB | |
| SOL IN ALL PROPORTIONS IN ETHYL ALCOHOL; VERY SOL IN WATER | HSDB | ||
| Crystals; sublimes without melting; freely sol in water; practically insol in alc | sublimes, Dihydrochloride | HSDB | |
| Vapor pressure | 11 mmHg | NIOSH | |
| 10.7 mmHg | at 20 °C | CAMEO | |
| 12.1 mmHg | at 25 °C | HSDB | |
| Flash point | 40 °C (104 °F) | ANHYDROUS 76% | HSDB |
| 43.33 °C (110 °F) | HSDB | ||
| 33.9 °C (93 °F) | open cup | HSDB | |
| Autoignition temperature | 385 °C (725 °F) | ANHYDROUS 76% | HSDB |
| 379.44 °C (715 °F) | CAMEO | ||
| 385 °C (725 °F) | ICSC | ||
| Lower explosive limit (LEL) | 4.2 % by volume | CAMEO | |
| 2.5 % by volume | ICSC | ||
| Upper explosive limit (UEL) | 14.4 % by volume | CAMEO | |
| 16.6 % by volume | ICSC | ||
| Vapor density | 2.07 (air = 1) | HSDB | |
| 2.1 (air = 1) | ICSC | ||
| Odor threshold | Odor recognition in air= 3.40 ppm (purity not specified) | HSDB | |
| Odor low= 2.50 mg/cu m; Odor high= 28.0 mg/cu m | HSDB | ||
| Critical temperature and pressure | 320 °C (608 °F) | HSDB |
Values compiled from PubChem Laboratory Chemical Safety Summary. Temperatures converted to Fahrenheit for reference.
04 · Source notes
Further notes on Ethylenediamine
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.
Odor
Water odor threshold: 16000 mg/l @ pKa of 10.0. Air odor threshold: 1.0 ppm. Odor Safety Class: C. C= Odor safety factor from 1-26. Less than 50% of distracted persons perceive warning of TLV.
Source: HSDB
05 · Handling and storage
Storing and handling Ethylenediamine
Storage conditions
Outside or detached storage is preferred. Avoid oxidizing materials, acids, and sources of halogens. Store in a cool, dry, well-ventilated location.
Source: Hazardous Substances Data Bank (HSDB)
Incompatible materials
Carbon disulfide reacts violently with ... ethylenediamine.
Source: Hazardous Substances Data Bank (HSDB)
Planning storage for a mix of chemicals? Check Ethylenediamine in the storage compatibility matrix →