|style="background: #F8EABA; text-align: center;" colspan="2" | Identifiers|
|SMILES||Script error: No such module "collapsible list".|
|style="background: #F8EABA; text-align: center;" colspan="2" | Properties|
|Molar mass||147.01 g/mol|
-17.03 °C, 256 K, 1 °F
180.5 °C, 454 K, 357 °F
|style="background: #F8EABA; text-align: center;" colspan="2" | Hazards|
|Flash point||66 °C|
| (what is this?) |
Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)
1,2-Dichlorobenzene, or ortho-dichlorobenzene (ODCB), is an organic compound with the formula C6H4Cl2. This colourless liquid is poorly soluble in water but miscible with most organic solvents. It is a derivative of benzene, consisting of two adjacent chlorine centers.
Production and uses
1,2-Dichlorobenzene is obtained as a side-product of the production of chlorobenzene:
- C6H5Cl + Cl2 → C6H4Cl2 + HCl
The reaction also affords the 1,4- and small amounts of the 1,3-isomer.
It is mainly used as a precursor to 1,2-dichloro-4-nitrobenzene, an intermediate in the synthesis of agrochemicals. In terms of niche applications, 1,2-dichlorobenzene is a versatile, high-boiling solvent. It is a preferred solvent for dissolving and working with fullerenes. It is an insecticide for termites and locust borers.
1,2-Dichlorobenzene is also used in softening and removing carbon-based contamination on metal surfaces.
- Merck Index, 11th Edition, 3044
- Gerald Booth (2007). "Nitro Compounds, Aromatic" in Ullmann's Encyclopedia of Industrial Chemistry Wiley-VCH, Weinheim, 2005.
- Technical Order 2J-1-13