What is Para dichlorobenzene?
Para dichlorobenzene is a chlorine substituted organic compound with the chemical formula C6H4Cl2.
Para dichlorobenzene is an aromatic compound forms a number of azeotropic mixtures. Para dichlorobenzene is usually called 1,4-dichloro benzene and also called as para crystals and paracide. Most of the 1,4-dichlorobenzene is released to the general environment is present as a vapour. It does not occur naturally.
Other names – 1,4-Dichlorobenzene
| C6H4Cl2 | Para dichlorobenzene |
| Density | 1.25 g/cm3 |
| Molecular Weight/ Molar Mass | 147.01 |
| Boiling Point | 174 °C |
| Melting Point | 53.5 °C |
| Chemical Formula | C6H4(Cl)2 |
Para dichlorobenzene Structure – C6H4Cl2
Para dichlorobenzene Structure – C6H4Cl2
Physical Properties of Para dichlorobenzene – C6H4Cl2
| Odour | Mothball-like |
| Appearance | White colored liquid |
| Experimental vapour pressure | 1.3 mmHg |
| Experimental gravity | 1.248 g/mL |
| Solubility in water | 0.08 g/L (80 mg/L) at 25 °C |
Chemical Properties of Para dichlorobenzene – C6H4Cl2
- Chlorination of p-dichlorobenzene yields principally 1,2,4-trichlorobenzene. It may also be nitrated or sulfonated but the products are of little technical importance
- Anticipated products from the reaction of 1,4-dichlorobenzene with ozone or OH radicals in the atmosphere are chlorinated phenols, ring cleavage products and nitro compounds..
- Producers tend to emphasize dichlorobenzene production or more highly chlorinated derivatives but usually have the capability to produce whichever derivative is in demand.
Uses of Para dichlorobenzene – C6H4Cl2
- Used as a space deodorant for toilets and refuse containers and as a fumigant for control of moths, molds and mildews.
- Used in the control of certain tree-boring insects and ants in the control of blue mold tobacco seedbeds.
- Used as a disintegrating paste for molding concrete and stoneware as a lubricant and in the manufacture of plastics, dyes and pharmaceuticals.
Frequently Asked Questions
What is dichlorobenzene used for?
Paradichlorobenzene is a fumigant insecticide used to combat moths in clothing. It can also be used in deodorant blocks made for toilets and trash cans. Paradichlorobenzene was first licensed in the United States for use in 1942, and is often referred to as 1,4-dichlorobenzene.
What does Paradichlorobenzene smell like?
Paradichlorobenzene is a solid crystal which is colorless to white and has a heavy pungent scent. At room temperatures it can sublimate, transforming directly from a solid into a gas.
Is Para dichlorobenzene polar or non polar?
P-Dichlorobenzene is symmetrical, and is thus non-polar. But o-dichlorobenzene and m-dichlorobenzene would be polar molecules, due to the polar nature of the C-Cl bond.
Is P dichlorobenzene soluble in water?
P-dichlorobenzene with the smell of moth balls appears as a white colored liquid. Water denser than water, and water insoluble.
What does polar and non polar mean?
Polar molecules arise when the difference between the bound atoms is in electronegativity. Nonpolar molecules arise when electrons are exchanged equally between atoms of a diatomic molecule, or when polar bonds cancel each other out in a larger molecule.
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