Substance profile
1,4-Dichlorobenzene
1,4-Dichlorobenzene is white crystals with a distinctive aromatic odor becomes very strong at concentrations between 30 and.
01 · Identification
What 1,4-Dichlorobenzene is
1,4-Dichlorobenzene is white crystals with a distinctive aromatic odor becomes very strong at concentrations between 30 and. It boils at 174 °C, melts at 53.1 °C.
Under the GHS it carries the signal word Warning. It is classed as hazardous Air Pollutants (HAPs).
Other names for 1,4-Dichlorobenzene
- p-dichlorobenzene
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>. |
| H319 | Causes serious eye irritation. |
| H400 | Very toxic to aquatic life. |
| H410 | Very toxic to aquatic life with long lasting effects. |
Precautionary statements: P201, P264, P273, P280, P305, P308, P313, P337, P338, P391, P501
03 · Physical and chemical properties
1,4-Dichlorobenzene 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 | 173.9 °C (345 °F) | HSDB | |
| 173.89 °C (345 °F) | NIOSH | ||
| 173.89 °C (345 °F) | at 760 mmHg | CAMEO | |
| Melting point | 53.1 °C (127.6 °F) | HSDB | |
| 53.33 °C (128 °F) | NIOSH | ||
| 52.78 °C (127 °F) | CAMEO | ||
| Density | 1.25 g/cm³ | NIOSH | |
| 1.4581 g/cm³ | at 20.5 °C | HSDB | |
| 1.2475 g/cm³ | at 25 °C | HSDB | |
| Solubility | Practically insoluble in water | HSDB | |
| Soluble in chloroform, carbon disulfide, benzene, ether, alcohol | HSDB | ||
| In water, 81.3 mg/L at 25 °C | at 25 °C | HSDB | |
| Vapor pressure | 1.3 mmHg | NIOSH | |
| 0.6 mmHg | at 20 °C | CAMEO | |
| 1.74 mmHg | at 25 °C | HSDB | |
| Flash point | 66 °C (150.8 °F) | HSDB | |
| 65.56 °C (150 °F) | HSDB | ||
| Autoignition temperature | 500 °C (932 °F) | HSDB | |
| 640 °C (1184 °F) | ICSC | ||
| Lower explosive limit (LEL) | 2.5 % by volume | NIOSH | |
| 1.7 % by volume | ICSC | ||
| Upper explosive limit (UEL) | 5.9 % by volume | ICSC | |
| Vapor density | 5.08 (air = 1) | HSDB | |
| Odor threshold | Odor Threshold Low: 0.12 [ppm] | Haz-Map | |
| Odor Threshold High: 15.0 [ppm] | Haz-Map | ||
| Detection odor threshold from AIHA (mean = 0.12 ppm) | Haz-Map | ||
| Critical temperature and pressure | 395.85 °C (744.5 °F) | HSDB | |
| Corrosivity | Non-corrosive | HSDB |
Values compiled from PubChem Laboratory Chemical Safety Summary. Temperatures converted to Fahrenheit for reference.
04 · Handling and storage
Storing and handling 1,4-Dichlorobenzene
Storage conditions
Keep container tightly closed in a dry and well-ventilated place. Storage class (TRGS 510): 13: Non Combustible Solids.
Source: Hazardous Substances Data Bank (HSDB)
Incompatible materials
Incompatible materials: Oxidizing agents.
Source: Hazardous Substances Data Bank (HSDB)
Reactivity
P-DICHLOROBENZENE is incompatible with oxidizing agents. It is also incompatible with aluminum and its alloys. It liquefies when mixed with camphor, phenol and salol. It will attack some forms of plastics, rubber and coatings. (NTP, 1992).
Source: CAMEO Chemicals
Planning storage for a mix of chemicals? Check 1,4-Dichlorobenzene in the storage compatibility matrix →