The freezing point of paradichlorobenzene is 127 degrees Fahrenheit at standard pressure. Paradichlorobenzene is used in agriculture to eradicate mold in soil, kill insects, and repel rodents and other pests. It is used in the home to repel clothes moths and in toilet cleaners.
Paradichlorobenzene is also known as 1,4-dichlorobenzene and abbreviated as PDB. Atoms of carbon, hydrogen and chlorine form the ring-shaped molecule. Its molecular weight is 147 atomic mass units and it vaporizes easily. It boils at 345 degrees Fahrenheit at standard pressure. PDB is poisonous when ingested and should be especially kept away children, who may mistake mothballs for candy.