Substance profile
Hexamethylenediamine
Hexamethylenediamine is colorless leaflets with an odor of piperidine.
01 · Identification
What Hexamethylenediamine is
Hexamethylenediamine is colorless leaflets with an odor of piperidine. Its molecular formula is C6H16N2 and its molecular weight is 116.2 g/mol. It boils at 205 °C, melts at 42 °C.
Under the GHS it carries the signal word Danger. It is classed as corrosives.
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 |
|---|---|
| H312 | Harmful in contact with skin. |
| H302 | Harmful if swallowed. |
| H335 | May cause respiratory irritation. |
| H314 | Causes severe skin burns and eye damage. |
Precautionary statements: P260, P270, P280, P301, P302, P310, P312, P330, P331, P352
03 · Physical and chemical properties
Hexamethylenediamine 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 | 205 °C (401 °F) | HSDB | |
| 205 °C (401 °F) | at 760 mmHg | CAMEO | |
| Melting point | 42 °C (107.6 °F) | HSDB | |
| 42.22 °C (108 °F) | CAMEO | ||
| Density | 0.93 g/cm³ | ICSC | |
| 0.799 g/cm³ | at 60 °C | OSHA | |
| (anhyd) 0.799 at 60 °C (liquid) | at 60 °C | HSDB | |
| Solubility | FREELY SOL IN WATER; SLIGHTLY SOL IN ALC, BENZENE | HSDB | |
| SOMEWHAT SOL IN ETHER | HSDB | ||
| greater than or equal to 100 mg/mL at 73 °F (NTP, 1992) | at 22.78 °C | CAMEO | |
| Vapor pressure | 1.1 mmHg | at 50 °C | CAMEO |
| 1.5001 mmHg | at 50 °C | ICSC | |
| Flash point | 71.11 °C (160 °F) | HSDB | |
| 81.11 °C (178 °F) | CAMEO | ||
| 85 °C (185 °F) | ICSC | ||
| Autoignition temperature | 305 °C (581 °F) | ICSC | |
| 405 °C (761 °F) | range, midpoint shown | CAMEO | |
| Lower explosive limit (LEL) | 0.7 % by volume | CAMEO | |
| 0.9 % by volume | ICSC | ||
| Upper explosive limit (UEL) | 6.3 % by volume | CAMEO | |
| 7.6 % by volume | ICSC | ||
| Vapor density | 4.01 (air = 1) | HSDB | |
| 3.8 (air = 1) | ICSC | ||
| Odor threshold | 0.0041 mg/cu m | HSDB | |
| 0.0032 mg/cu m | HSDB |
Values compiled from PubChem Laboratory Chemical Safety Summary. Temperatures converted to Fahrenheit for reference.
04 · Handling and storage
Storing and handling Hexamethylenediamine
Incompatible materials
...can react with oxidizing materials.
Source: Hazardous Substances Data Bank (HSDB)
Reactivity
HEXAMETHYLENEDIAMINE is hygroscopic. This compound can react with strong oxidizing materials. It is incompatible with acids, acid chlorides and acid anhydrides. It is also incompatible with ketones, aldehydes, nitrates, phenols, isocyanates, monomers and chlorinated compounds. (NTP, 1992).
Source: CAMEO Chemicals
Planning storage for a mix of chemicals? Check Hexamethylenediamine in the storage compatibility matrix →