GUIDE
153

Substances - Toxic and/or Corrosive
(Combustible)

• TOXIC and/or CORROSIVE; inhalation, ingestion or skin contact with material may cause severe injury or death.
• Methyl bromoacetate (UN2643) is an eye irritant/lachrymator (causes flow of tears).
• Contact with molten substance may cause severe burns to skin and eyes.
• Avoid any skin contact.
• Fire may produce irritating, corrosive and/or toxic gases.
• Runoff from fire control or dilution water may be corrosive and/or toxic and cause environmental contamination.

• Combustible material: may burn but does not ignite readily.
• When heated, vapors may form explosive mixtures with air: indoors, outdoors and sewers explosion hazards.
• Those substances designated with a (P) may polymerize explosively when heated or involved in a fire.
• Corrosives in contact with metals may evolve flammable hydrogen gas.
• Containers may explode when heated.
• Runoff may pollute waterways.
• Substance may be transported in a molten form.

• 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.
• Ventilate closed spaces before entering, but only if properly trained and equipped.

• 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' clothing provides thermal protection but only limited chemical protection.

• 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.

• For highlighted materials: see Table 1 - Initial Isolation and Protective Action Distances.
• For non-highlighted materials: increase the immediate precautionary measure distance, in the downwind direction, as necessary.

• 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.

• Dry chemical, CO₂ or water spray.

• Dry chemical, CO₂, alcohol-resistant foam or water spray.
• If it can be done safely, move undamaged containers away from the area around the fire.
• Dike runoff from fire control for later disposal.

• Fight fire from maximum distance or use unmanned master stream devices or monitor nozzles.
• Do not get water inside containers.
• Cool containers with flooding quantities of water until well after fire is out.
• Withdraw immediately in case of rising sound from venting safety devices or discoloration of tank.
• ALWAYS stay away from tanks in direct contact with flames.

• ELIMINATE all ignition sources (no smoking, flares, sparks or flames) from immediate area.
• Do not touch damaged containers or spilled material unless wearing appropriate protective clothing.
• Stop leak if you can do it without risk.
• Prevent entry into waterways, sewers, basements or confined areas.
• Absorb or cover with dry earth, sand or other non-combustible material and transfer to containers.
• DO NOT GET WATER INSIDE CONTAINERS.

• For corrosives, in case of contact, immediately flush skin or eyes with running water for at least 30 minutes. Additional flushing may be required.
• Removal of solidified molten material from skin requires medical assistance.

ERG 2024