Chlorinated Polyvinyl Chloride

Health Hazards:
· CPVC resin itself is chemically stable and has very low toxicity.
· The main hazard lies in processing: High-temperature pyrolysis releases irritating hydrogen chloride (HCl) gas and small amounts of toxic gases like chlorine and carbon monoxide.
· Inhalation of thermal decomposition products can severely irritate the respiratory tract, causing coughing, difficulty breathing, and even chemical pneumonitis.
· Powdered resin is sensitive to static electricity generated by mechanical friction.

Handling Protection:
· Processing must be conducted under good general ventilation or local exhaust, with strict control of processing temperature.
· When handling powder, wear a dust respirator (N95 type) to prevent dust inhalation.
· Wear safety glasses and gloves to avoid dust contact with eyes and skin.
· Do not eat or smoke in the work area.

Storage & Transportation:
· Store in a cool, dry, well-ventilated warehouse away from direct sunlight.
· Keep away from heat sources, ignition sources, and high-temperature equipment. Storage temperature should not be too high.
· Store separately from strong oxidizers and flammable or explosive materials.
· Keep packages tightly sealed to prevent moisture and contamination.
· During transportation, prevent package damage and avoid mixing with sharp objects.

Fire Fighting:
· CPVC is flame retardant, difficult to ignite, and self-extinguishing when removed from the fire source.
· The main fire hazard is the generation of large amounts of corrosive and toxic gases (e.g., hydrogen chloride) upon thermal decomposition.
· In case of fire, firefighters must wear self-contained positive pressure breathing apparatus (SCBA) and full protective gear.
· Extinguish fire using water, foam, dry chemical, or CO2. Use large quantities of water to cool containers and flush away spilled chemicals and decomposition products.
· Avoid direct water stream on molten CPVC to prevent splashing.