What is dichlorobenzene used for?
p-Dichlorobenzene (PDCB) is a chlorinated volatile organic compound (VOC) that is widely used in essentially pure form (>99.8%) as a repellant against snakes, rats, mice, squirrels, bats and insects, as a deodorizer for toilets, urinals and diaper pails, as an insecticidal fumigant, and as an air freshener (National …
Is dichlorobenzene safe for humans?
The World Health Organization (WHO) considered paradichlorobenzene possibly carcinogenic to humans based on studies with mice. The way paradichlorobenzene caused cancer in mice could possibly occur in humans as well. The U.S. EPA has classified it as “not likely to be carcinogenic to humans”.
How do I get rid of dichlorobenzene?
You can directly remove it by column chromatrography using hexane as eluent and then adding a more polar solvent to get your ketonic product.
How will you prepare 1/4 dichlorobenzene from chlorobenzene?
When chlorobenzene reacts with chlorine and ferric chloride there is a formation of 1, 2- Dichlorobenzene or o- Dichlorobenzene and 1, 4- Dichlorobenzene or p- Dichlorobenzene. The reaction is given below: In this reaction 1, 4- Dichlorobenzene is the major product, and 1, 2- Dichlorobenzene is the minor product.
Why does paradichlorobenzene have an odor?
It may not be a household name, but 1,4-dichlorobenzene is a common household smell. When exposed to air, paradichlorobenzene (what mothballs are made of) gives off a volatile organic compound — a chemical emitted in gas form — called 1,4-dichlorobenzene (or, in chemical shorthand, 1,4-DCB).
What does Paradichlorobenzene smell like?
It may not be a household name, but 1,4-dichlorobenzene is a common household smell. It is the whiff of mothballs, the aroma masking a damp basement, the essence of an under-ventilated bathroom.
How will you prepare 1/4-dichlorobenzene from chlorobenzene?
Where should I put mothballs in my house?
Mothballs must be used in an airtight space, such as a garment bag or well-sealed container, never in an open closet or plastic garbage bag, according to the authors. “Once vapors enter the home, their odor can be detected at a few parts per billion in the air,” Stone said.
How is 1, 4 dichlorobenzene harmful to humans?
1,4-dichlorobenzene is a dichlorobenzene carrying chloro groups at positions 1 and 4. It has a role as an insecticide. The primary exposure to 1,4-dichlorobenzene is from breathing contaminated indoor air. Acute (short- term) exposure to 1,4-dichlorobenzene, via inhalation in humans, results in irritation of the skin, throat, and eyes.
What is the chemical formula for 1, 4 dichlorobenzene?
1,4-Dichlorobenzene (1,4-DCB, p-DCB, or para-dichlorobenzene, sometimes abbreviated as PDB or para) is an organic compound with the formula C6H4Cl2. This colorless solid has a strong odor. The molecule consists of a benzene ring with two chlorine atoms (replacing hydrogen atoms) on opposing sites of the ring.
How is dichlorobenzene purified at room temperature?
The compound can be purified by fractional crystallization, taking advantage of its relatively high melting point of 53.5 °C; the isomeric dichlorobenzenes and chlorobenzene melt well below room temperature.
Where was 1, 2-dichlorobenzene detected in the blood?
Dichlorobenzene was detected in whole blood (3.12 ng/g) and adipose tissue (2.28 ng/g) from the general population of Canada(1). 1,2-Dichlorobenzene was detected in the personal air of Los Angeles, CA residents at concns of 0.3-0.4 ug/cu m and residents of Contra Costa, CA at concns of 0.6 ug/cu m(2).