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p-Dichlorobenzene is a chlorinated aromatic hydrocarbon widely used as a deodorizer, fumigant, and intermediate in the production of dyes, resins, and other chemicals.
p-Dichlorobenzene belongs to the dichlorobenzene isomer family, with chlorine atoms positioned at the para (1,4) positions on the benzene ring.
p-Dichlorobenzene is valued for its volatility, strong odor, and pesticidal properties, particularly against moths and insects.
CAS Number: 106-46-7
EC Number: 203-400-5
Molecular Formula: C6H4Cl2
Molecular Weight: 147.00 g/mol
Synonyms: p-Dichlorobenzene, 1,4-Dichlorobenzene, para-Dichlorobenzene, PDCB, p-DCB, Benzene, 1,4-dichloro-, 1,4-DCB, Paradichlorobenzene, Deodorant block chemical, Moth control agent p-dichlorobenzene, Urinal deodorizer chemical, p-Dichlorobenzol, Pesticidal para-dichlorobenzene, Industrial intermediate 1,4-dichlorobenzene, Insecticidal chemical p-dichlorobenzene
APPLICATIONS
p-Dichlorobenzene is widely used as a deodorizer in urinal blocks and toilet fresheners.
p-Dichlorobenzene is applied in air freshening blocks for odor control in public sanitation areas.
p-Dichlorobenzene is used in solid deodorizer formulations for homes and industry.
p-Dichlorobenzene is employed as a moth repellent.
p-Dichlorobenzene is used in mothballs to protect clothing and textiles from moth larvae.
p-Dichlorobenzene is applied in storage fumigants for fabrics and carpets.
p-Dichlorobenzene is incorporated into pesticide formulations.
p-Dichlorobenzene is used as an insecticidal fumigant in controlled environments.
p-Dichlorobenzene is applied in termite and beetle control products.
p-Dichlorobenzene is utilized as a chemical intermediate in dye manufacturing.
p-Dichlorobenzene is used to produce pigments and specialty dyes.
p-Dichlorobenzene is applied in intermediates for agricultural chemicals.
p-Dichlorobenzene is employed in polymer and resin synthesis.
p-Dichlorobenzene is used as a precursor for polyphenylene sulfide (PPS).
p-Dichlorobenzene is applied in specialty engineering plastics.
p-Dichlorobenzene is utilized in laboratory research as a solvent and recrystallization agent.
p-Dichlorobenzene is used in studies of chlorinated aromatic hydrocarbons.
p-Dichlorobenzene is applied as a calibration standard in melting point analysis.
p-Dichlorobenzene is incorporated into fumigant blocks for sanitation and pest control.
p-Dichlorobenzene is used in industrial deodorizing products.
p-Dichlorobenzene is applied in anti-mold and anti-mildew products.
P-Dichlorobenzene is used as a deodorant and air freshener in urinal blocks and mothballs.
P-Dichlorobenzene is incorporated into household products for odor control.
P-Dichlorobenzene is applied in sanitary blocks for toilets and washrooms.
P-Dichlorobenzene is used as a fumigant to control moths and insects.
P-Dichlorobenzene is incorporated into pest control formulations for stored textiles.
P-Dichlorobenzene is applied in warehouses to prevent moth infestation in wool.
P-Dichlorobenzene is used as a solvent in chemical synthesis.
P-Dichlorobenzene is incorporated into reactions involving specialty chemicals.
P-Dichlorobenzene is applied in the formulation of degreasing agents.
P-Dichlorobenzene is used as an intermediate in dye manufacturing.
P-Dichlorobenzene is incorporated into the synthesis of azo and anthraquinone dyes.
P-Dichlorobenzene is applied in the preparation of pigments for inks and coatings.
P-Dichlorobenzene is used in agrochemical production.
P-Dichlorobenzene is incorporated into intermediates for herbicides.
P-Dichlorobenzene is applied in pesticide synthesis pathways.
P-Dichlorobenzene is used in the pharmaceutical industry.
P-Dichlorobenzene is incorporated into the synthesis of active ingredients.
P-Dichlorobenzene is applied as an intermediate in medicinal chemistry.
P-Dichlorobenzene is used in the plastics industry as a polymer intermediate.
P-Dichlorobenzene is incorporated into polyester resin production.
P-Dichlorobenzene is applied in specialty polymer formulations.
P-Dichlorobenzene is used as a heat transfer medium.
P-Dichlorobenzene is incorporated into eutectic mixtures for thermal storage.
P-Dichlorobenzene is applied in laboratories as a stable organic phase-change material.
P-Dichlorobenzene is used in the manufacture of rubber chemicals.
P-Dichlorobenzene is incorporated into antioxidants for rubber processing.
P-Dichlorobenzene is applied in vulcanization accelerators.
P-Dichlorobenzene is used in coatings and paints.
P-Dichlorobenzene is incorporated into protective surface finishes.
P-Dichlorobenzene is applied in lacquer formulations.
P-Dichlorobenzene is used in adhesives and sealants.
P-Dichlorobenzene is incorporated into specialty bonding agents.
P-Dichlorobenzene is applied in formulations requiring aromatic stability.
P-Dichlorobenzene is used in the synthesis of polyphenylene sulfide (PPS).
P-Dichlorobenzene is incorporated as a monomer in high-performance polymers.
P-Dichlorobenzene is applied in engineering plastics for automotive and electronics.
P-Dichlorobenzene is used in the fragrance industry as a chemical precursor.
P-Dichlorobenzene is incorporated into synthetic fragrance intermediates.
P-Dichlorobenzene is applied in controlled manufacturing under regulations.
DESCRIPTION
P-Dichlorobenzene is an aromatic compound with two chlorine atoms substituted in the para positions on a benzene ring.
P-Dichlorobenzene appears as colorless to white crystals with a characteristic penetrating odor.
P-Dichlorobenzene has a melting point of 53 °C and a boiling point of about 174 °C.
P-Dichlorobenzene is insoluble in water but soluble in organic solvents such as alcohol and ether.
P-Dichlorobenzene is volatile and readily sublimes at room temperature.
P-Dichlorobenzene is widely used in moth repellents, deodorizers, and as an intermediate in chemical manufacturing.
P-Dichlorobenzene is toxic by inhalation and prolonged exposure requires strict safety precautions.
P-Dichlorobenzene undergoes electrophilic substitution reactions typical of halogenated aromatics.
P-Dichlorobenzene is produced industrially by direct chlorination of benzene with controlled substitution.
P-Dichlorobenzene is a regulated substance with restrictions in consumer products due to health and environmental risks.
p-Dichlorobenzene is a white crystalline solid with a strong, pungent odor.
p-Dichlorobenzene is volatile and readily sublimes at room temperature.
p-Dichlorobenzene is insoluble in water but soluble in alcohol, ether, and organic solvents.
p-Dichlorobenzene is chemically stable under normal conditions.
p-Dichlorobenzene is combustible and may release toxic fumes when burned.
p-Dichlorobenzene is toxic to aquatic life and requires careful environmental handling.
p-Dichlorobenzene is stable in storage but may discolor upon prolonged exposure to air and light.
p-Dichlorobenzene is classified as harmful and potentially carcinogenic.
p-Dichlorobenzene must be handled under strict industrial hygiene standards.
p-Dichlorobenzene is regulated as a restricted-use chemical in some regions.
PROPERTIES
Chemical Formula: C6H4Cl2
Molecular Weight: 147.00 g/mol
Common Name: p-Dichlorobenzene
Appearance: White crystalline solid
Odor: Strong, pungent odor (mothball-like)
Density: 1.25 g/cm³
Melting Point: 53–54°C
Boiling Point: 174°C
Flash Point: 66°C (closed cup)
Solubility: Insoluble in water; soluble in alcohol, ether, chloroform, and benzene
Reactivity: Stable under normal conditions; reacts with strong oxidizers
Chemical Stability: Stable in sealed containers under dry conditions
Storage Temperature: Store at 5–25°C in tightly sealed containers
FIRST AID
Inhalation:
If p-Dichlorobenzene vapors are inhaled, move the person to fresh air.
Seek immediate medical attention if dizziness, headache, or respiratory irritation occurs.
Provide oxygen if breathing difficulties arise.
Skin Contact:
Wash thoroughly with soap and water after skin contact with p-Dichlorobenzene.
Seek medical advice if redness, irritation, or burns occur.
Remove contaminated clothing and wash before reuse.
Eye Contact:
Rinse eyes with water for at least 15 minutes.
Seek immediate medical attention if irritation, redness, or blurred vision persists.
Remove contact lenses if present and continue rinsing.
Ingestion:
If p-Dichlorobenzene is swallowed, rinse mouth thoroughly with water.
Do not induce vomiting unless directed by medical personnel.
Seek immediate medical attention.
Note to Physicians:
Treat symptomatically.
Monitor for liver and kidney effects.
Provide supportive care as required.
HANDLING AND STORAGE
Handling:
Personal Protection:
Wear chemical-resistant gloves, protective clothing, and goggles when handling p-Dichlorobenzene.
Use respiratory protection if ventilation is inadequate.
Ventilation:
Ensure adequate local exhaust ventilation in handling areas.
Prevent accumulation of vapors in closed spaces.
Avoidance:
Avoid inhalation of vapors and direct contact with skin and eyes.
Do not eat, drink, or smoke while handling.
Wash hands thoroughly after use.
Spill and Leak Procedures:
Sweep up spilled solid material carefully.
Collect in properly labeled containers for disposal.
Dispose of according to local regulations.
Storage:
Store p-Dichlorobenzene in a cool, dry, and well-ventilated place.
Keep containers tightly sealed and protected from light and moisture.
Avoid contact with strong oxidizing agents.
Handling Cautions:
Prevent sublimation vapors from accumulating in enclosed spaces.
Follow strict hygiene measures due to toxicity risks.
Ensure compliance with regulatory restrictions in specific regions.
