Substance profile
N-Nitrosodimethylamine
N-Nitrosodimethylamine is a yellow, oily liquid with a faint, characteristic odor.
01 · Identification
What N-Nitrosodimethylamine is
N-Nitrosodimethylamine is a yellow, oily liquid with a faint, characteristic odor. Its molecular formula is C2H6N2O and its molecular weight is 74.08 g/mol. It boils at 152 °C, melts at 25 °C.
Under the GHS it carries the signal word Danger. It is classed as hazardous Air Pollutants (HAPs).
Other names for N-Nitrosodimethylamine
- dimethylnitrosoamine
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 |
|---|---|
| H350 | May cause cancer <state route of exposure if it is conclusively proven that no other routes of exposure cause the hazard>. |
| H330 | Fatal if inhaled. |
| H301 | Toxic if swallowed. |
| H372 | Causes 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>. |
| H411 | Toxic to aquatic life with long lasting effects. |
Precautionary statements: P201, P260, P270, P271, P273, P280, P301, P304, P308, P310, P313, P314, P330, P391, P501
03 · Physical and chemical properties
N-Nitrosodimethylamine 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 | 152 °C (305.6 °F) | HSDB | |
| 152.22 °C (306 °F) | NIOSH | ||
| 151 °C (303.8 °F) | ICSC | ||
| Melting point | 25 °C (77 °F) | below this value | HMDB |
| Density | 1.005 g/cm³ | NIOSH | |
| 1.0048 g/cm³ | at 20 °C | HSDB | |
| Solubility | Infinitely soluble in water at 23-25 °C | HSDB | |
| Soluble in all common organic solvents and in lipids | HSDB | ||
| Very soluble in water, alcohol, ether | HSDB | ||
| Vapor pressure | 3 mmHg | NIOSH | |
| 2.7 mmHg | at 20 °C | HSDB | |
| 2.7002 mmHg | at 20 °C | ICSC | |
| Flash point | 61.11 °C (142 °F) | CAMEO | |
| 61 °C (141.8 °F) | ICSC | ||
| Lower explosive limit (LEL) | Combustible Liquid | NIOSH | |
| Vapor density | 2.56 (air = 1) | HSDB | |
| Odor threshold | Odor Threshold Low: 0.0079 [ppm] | Haz-Map | |
| Odor Threshold High: 0.01 [ppm] | Haz-Map | ||
| Odor threshold from AIHA | Haz-Map |
Values compiled from PubChem Laboratory Chemical Safety Summary. Temperatures converted to Fahrenheit for reference.
04 · Handling and storage
Storing and handling N-Nitrosodimethylamine
Storage conditions
ALL BOTTLES OF N-NITROSODIETHYLAMINE SHOULD BE STORED & TRANSPORTED WITHIN UNBREAKABLE OUTER CONTAINER; STORAGE SHOULD BE IN VENTILATED STORAGE CABINET (OR IN HOOD). /N-NITROSODIETHYLAMINE, ALSO APPLICABLE TO OTHER DIALKYLNITROSAMINES/
Source: Hazardous Substances Data Bank (HSDB)
Incompatible materials
Oxidants, especially peracids. Sensitive to UV light.
Source: Hazardous Substances Data Bank (HSDB)
Reactivity
N-NITROSODIMETHYLAMINE is sensitive to exposure to light, especially ultraviolet light. Is stable at room temperature for more than 14 days in aqueous solution at neutral and alkaline pH in the absence of light. Slightly less stable at strongly acid pH at room temperature. Incompatible with strong oxidizing agents. Also incompatible with strong bases. Can be reduced by reducing agents. Incompatible with hydrogen bromide in acetic acid. Also photochemically reactive. (NTP, 1992)
Source: CAMEO Chemicals
Planning storage for a mix of chemicals? Check N-Nitrosodimethylamine in the storage compatibility matrix →