Substance profile
2-Naphthylamine
2-Naphthylamine is colorless crystals which darken in air to a reddish-purple color with a faint aromatic odor.
01 · Identification
What 2-Naphthylamine is
2-Naphthylamine is colorless crystals which darken in air to a reddish-purple color with a faint aromatic odor. Its molecular formula is C10H9N and its molecular weight is 143.18 g/mol. It boils at 306 °C, melts at 110 °C, is soluble in water.
Under the GHS it carries the signal word Danger. It is classed as carcinogens.
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>. |
| H302 | Harmful if swallowed. |
| H411 | Toxic to aquatic life with long lasting effects. |
Precautionary statements: P201, P270, P273, P280, P301, P308, P312, P313, P330, P391, P501
03 · Physical and chemical properties
2-Naphthylamine 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 | 306 °C (582.8 °F) | HSDB | |
| 306.11 °C (583 °F) | NIOSH | ||
| 306.11 °C (583 °F) | at 760 mmHg | CAMEO | |
| Melting point | 109.5 °C (229.1 °F) | Technical | HSDB |
| 111.11 °C (232 °F) | NIOSH | ||
| Density | 1.061 g/cm³ | ICSC | |
| 1.061 g/cm³ | at 98 °C | HSDB | |
| 1.061 g/cm³ | at 97.78 °C | CAMEO | |
| Solubility | Soluble in alcohol, ether | HSDB | |
| SOL IN MANY ORG SOLVENTS | HSDB | ||
| In water, 6.40 mg/L @ 18 °C | at 18 °C | HSDB | |
| Vapor pressure | 0.000256 mmHg | at 25 °C | HSDB |
| 1 mmHg | at 107.78 °C | NIOSH | |
| 1 mmHg | at 108 °C | CAMEO | |
| Flash point | 157 °C (314.6 °F) | HSDB | |
| 157.22 °C (315 °F) | NIOSH | ||
| Lower explosive limit (LEL) | Nonexplosive | HSDB | |
| Combustible Solid | NIOSH | ||
| Vapor density | 4.95 (air = 1) | HSDB | |
| Odor threshold | Recognition: 1.4-1.9 mg/cu m | HSDB | |
| Odor Threshold Low: 1.4 [ppm] | Haz-Map | ||
| Odor Threshold High: 1.9 [ppm] | Haz-Map | ||
| Corrosivity | NOT CORROSIVE | HSDB |
Values compiled from PubChem Laboratory Chemical Safety Summary. Temperatures converted to Fahrenheit for reference.
04 · Handling and storage
Storing and handling 2-Naphthylamine
Storage conditions
Separated from food and feedstuffs. Well closed.
Source: Hazardous Substances Data Bank (HSDB)
Incompatible materials
None reported
Source: The National Institute for Occupational Safety and Health (NIOSH)
Reactivity
BETA-NAPHTHYLAMINE is a weak base. It is incompatible with strong oxidizing agents and strong acids. It is also incompatible with nitrous acid. It reduces warm ammoniacal silver nitrate. (NTP, 1992)
Source: CAMEO Chemicals
Planning storage for a mix of chemicals? Check 2-Naphthylamine in the storage compatibility matrix →