Guide 145: Organic Peroxides (Heat and Contamination Sensitive)

ERG 2024 Guide 145, page 1GUIDE 145 Organic Peroxides (Heat and Contamination Sensitive) POTENTIAL HAZARDS FIRE OR EXPLOSION • May explode from heat or contamination. • May ignite combustibles (wood, paper, oil, clothing, etc.). • May be ignited by heat, sparks or flames. • May burn rapidly with flare-burning effect. • Containers may explode when heated. • Runoff may create fire or explosion hazard. • • • HEALTH Fire may produce irritating, corrosive and/or toxic gases. Ingestion or contact (skin, eyes) with substance may cause severe injury or burns. Runoff from fire control or dilution water may cause environmental contamination. PUBLIC SAFETY CALL 911. Then call emergency response telephone number on shipping paper. If shipping paper not available or no answer, refer to appropriate telephone number listed on the inside back cover. Keep unauthorized personnel away. Stay upwind, uphill and/or upstream. • • • PROTECTIVE CLOTHING • Wear positive pressure self-contained breathing apparatus (SCBA). • Wear chemical protective clothing that is specifically recommended by the manufacturer when there is NO RISK OF FIRE. • Structural firefighters' protective clothing provides thermal protection but only limited chemical protection. EVACUATION Immediate precautionary measure • Isolate spill or leak area in all directions for at least 50 meters (150 feet) for liquids and at least 25 meters (75 feet) for solids. Large Spill • • Consider initial evacuation for at least 250 meters (800 feet) in all directions. Fire If tank, rail tank car or highway tank is involved in a fire, ISOLATE for 800 meters (1/2 mile) in all directions; also, consider initial evacuation for 800 meters (1/2 mile) in all directions. Page 220 ERG 2024#

ERG 2024 Guide 145, page 2Organic Peroxides (Heat and Contamination Sensitive) GUIDE 145 EMERGENCY RESPONSE FIRE Small Fire • Water spray or fog is preferred; if water not available use dry chemical, CO2 or regular foam. Large Fire • Flood fire area with water from a distance. • Use water spray or fog; avoid aiming straight or solid streams directly onto the product. • Do not move cargo or vehicle if cargo has been exposed to heat. • • If it can be done safely, move undamaged containers away from the area around the fire. Fire Involving Tanks, Rail Tank Cars or Highway Tanks Fight fire from maximum distance or use unmanned master stream devices or monitor nozzles. • Cool containers with flooding quantities of water until well after fire is out. • ALWAYS stay away from tanks in direct contact with flames. • For massive fire, use unmanned master stream devices or monitor nozzles; if this is impossible, withdraw from area and let fire burn. SPILL OR LEAK • ELIMINATE all ignition sources (no smoking, flares, sparks or flames) from immediate area. • Keep combustibles (wood, paper, oil, etc.) away from spilled material. • Do not touch damaged containers or spilled material unless wearing appropriate protective clothing. • Keep substance wet using water spray. • Stop leak if you can do it without risk. Small Spill • Pick up with inert, damp, non-combustible material using clean, non-sparking tools and place into loosely covered plastic containers for later disposal. Large Spill • Wet down with water and dike for later disposal. • Prevent entry into waterways, sewers, basements or confined areas. • DO NOT CLEAN-UP OR DISPOSE OF, EXCEPT UNDER SUPERVISION OF A SPECIALIST. FIRST AID Refer to the “General First Aid” section. Specific First Aid: • Contaminated clothing may be a fire risk when dry. ERG 2024 Page 221#