Substance profile
3,4-Dichloroaniline
3,4-Dichloroaniline is needles from petroleum ether.
01 · Identification
What 3,4-Dichloroaniline is
3,4-Dichloroaniline is needles from petroleum ether. Its molecular formula is C6H5Cl2N and its molecular weight is 162.01 g/mol. It boils at 272 °C, melts at 72.2 °C.
Under the GHS it carries the signal word Danger.
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 |
|---|---|
| H331 | Toxic if inhaled. |
| H311 | Toxic in contact with skin. |
| H301 | Toxic if swallowed. |
| H318 | Causes serious eye damage. |
| H317 | May cause an allergic skin reaction. |
| H400 | Very toxic to aquatic life. |
| H410 | Very toxic to aquatic life with long lasting effects. |
Precautionary statements: P260, P261, P270, P271, P272, P273, P280, P301, P302, P304, P305, P310, P313, P330, P333, P338, P352, P391, P501
03 · Physical and chemical properties
3,4-Dichloroaniline 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 | 272 °C (521.6 °F) | HSDB | |
| 272.22 °C (522 °F) | at 760 mmHg | CAMEO | |
| Melting point | 72.22 °C (162 °F) | CAMEO | |
| 72 °C (161.6 °F) | ICSC | ||
| 71.5 °C (160.7 °F) | range, midpoint shown | HSDB | |
| Density | 1.33 g/cm³ | HSDB | |
| 1.57 g/cm³ | ICSC | ||
| 1.33 g/cm³ | at 85 °C | CAMEO | |
| Solubility | Very sol in alcohol, ether; slightly sol in benzene. | HSDB | |
| Sol in most org solvents | HSDB | ||
| Water solubility of 92 mg/l at 20 °C | at 20 °C | HSDB | |
| Vapor pressure | 0.0098 mmHg | at 20 °C | ICSC |
| 0.0063 mmHg | at 25 °C | HSDB | |
| 1 mmHg | at 81.11 °C | CAMEO | |
| Flash point | 166.11 °C (331 °F) | HSDB | |
| 166 °C (330.8 °F) | ICSC | ||
| Autoignition temperature | 265 °C (509 °F) | CAMEO | |
| 269 °C (516.2 °F) | ICSC | ||
| Lower explosive limit (LEL) | 2.8 % by volume | ICSC | |
| 2.8 % by volume | at 152.78 °C | CAMEO | |
| Upper explosive limit (UEL) | 7.2 % by volume | ICSC | |
| 7.2 % by volume | at 178.89 °C | CAMEO | |
| Vapor density | 5.59 (air = 1) | CAMEO | |
| 5.6 (air = 1) | ICSC | ||
| Critical temperature and pressure | 526.85 °C (980.3 °F) | HSDB |
Values compiled from PubChem Laboratory Chemical Safety Summary. Temperatures converted to Fahrenheit for reference.
04 · Handling and storage
Storing and handling 3,4-Dichloroaniline
Storage conditions
STORE IN A COOL, DRY, WELL-VENTILATED LOCATION. SEPARATE FROM ACIDS, OXIDIZING MATERIALS, & COMBUSTIBLES. /DICHLOROANILINES/
Source: Hazardous Substances Data Bank (HSDB)
Reactivity
3,4-DICHLOROANILINE is incompatible with oxidizing agents, acids, acid chlorides and acid anhydrides. It can decompose at low pH. Hydrochloric acid accelerates decomposition. Reacts at temperatures above 356 °F in the presence of ferric chloride (NTP, 1992).
Source: CAMEO Chemicals
Planning storage for a mix of chemicals? Check 3,4-Dichloroaniline in the storage compatibility matrix →