Substance profile
N,N-Dimethylaniline
N,N-Dimethylaniline is a pale-yellow, oily liquid with an amine-like odor.
01 · Identification
What N,N-Dimethylaniline is
N,N-Dimethylaniline is a pale-yellow, oily liquid with an amine-like odor. Its molecular formula is C8H11N and its molecular weight is 121.18 g/mol. It boils at 193 °C, melts at 2.1 °C.
Under the GHS it carries the signal word Danger. It is classed as hazardous Air Pollutants (HAPs).
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 |
|---|---|
| H351 | Suspected of causing cancer <state route of exposure if it is conclusively proven that no other routes of exposure cause the hazard>. |
| H331 | Toxic if inhaled. |
| H311 | Toxic in contact with skin. |
| H301 | Toxic if swallowed. |
| H411 | Toxic to aquatic life with long lasting effects. |
Precautionary statements: P201, P260, P270, P271, P273, P280, P301, P302, P304, P308, P310, P313, P330, P352, P391, P501
03 · Physical and chemical properties
N,N-Dimethylaniline 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 | 193 °C (379.4 °F) | HSDB | |
| 192.22 °C (378 °F) | NIOSH | ||
| 193.89 °C (381 °F) | at 760 mmHg | CAMEO | |
| Melting point | 2.1 °C (35.8 °F) | HSDB | |
| 2.22 °C (36 °F) | NIOSH | ||
| 2.44 °C (36.4 °F) | CAMEO | ||
| Density | 0.96 g/cm³ | NIOSH | |
| 0.9537 g/cm³ | at 20 °C | HSDB | |
| 0.9557 g/cm³ | at 20 °C | CAMEO | |
| Solubility | Freely soluble in alcohol, chloroform, ether | HSDB | |
| Soluble in acetone, benzene, organic solvents | HSDB | ||
| In water, 1,454 mg/L at 25 °C | at 25 °C | HSDB | |
| Vapor pressure | 1 mmHg | NIOSH | |
| 0.5025 mmHg | at 20 °C | ICSC | |
| 0.7 mmHg | at 25 °C | HSDB | |
| Flash point | 62.78 °C (145 °F) | HSDB | |
| 61.11 °C (142 °F) | NIOSH | ||
| Autoignition temperature | 371.11 °C (700 °F) | HSDB | |
| 371 °C (699.8 °F) | ICSC | ||
| Lower explosive limit (LEL) | 1 % by volume | ICSC | |
| Explodes on contact with benzoyl peroxide or diisopropyl peroxydicarbonate. | HSDB | ||
| Class IIIA Combustible Liquid: Fl.P. at or above 140 °F and below 200 °F. | NIOSH | ||
| Upper explosive limit (UEL) | 7 % by volume | ICSC | |
| Vapor density | 4.17 (air = 1) | HSDB | |
| 4.2 (air = 1) | ICSC | ||
| Odor threshold | Odor Threshold Low: 0.001 [ppm] | Haz-Map | |
| Odor Threshold High: 0.2 [ppm] | Haz-Map | ||
| Odor threshold from AIHA | Haz-Map | ||
| Critical temperature and pressure | 414.55 °C (778.2 °F) | HSDB |
Values compiled from PubChem Laboratory Chemical Safety Summary. Temperatures converted to Fahrenheit for reference.
04 · Handling and storage
Storing and handling N,N-Dimethylaniline
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.
Source: Hazardous Substances Data Bank (HSDB)
Incompatible materials
Explodes on contact with benzoyl peroxide or diisopropyl peroxydicarbonate.
Source: Hazardous Substances Data Bank (HSDB)
Reactivity
Explosive decomposition occurred when finely divided benzoyl peroxide was allowed to react with N,N-DIMETHYLANILINE by breaking an ampoule containing 0.5 grams of dimethylaniline in an autoclave, NFPA 491M, 1991. This result may be expected with other peroxides and various oxidants.
Source: CAMEO Chemicals
Planning storage for a mix of chemicals? Check N,N-Dimethylaniline in the storage compatibility matrix →