# Guide 142: Oxidizers - Toxic (Liquid)

- **operation:** document
- **citation:** ERG 2024 Guide 142
- **title:** Guide 142: Oxidizers - Toxic (Liquid)
- **source type:** guidance
- **agency:** U.S. DOT / Transport Canada / SICT
- **status:** guidance
- **official:** true
- **published on:** 2024-04-04
- **effective on:** Not available
- **summary:** ERG2024 response Guide 142: Oxidizers - Toxic (Liquid).
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- **app url:** https://regulus.evalyn.ai/document/phmsa-erg-2024-guide-142
- **source url:** https://www.phmsa.dot.gov/erg/guide?number=142
**body:**

GUIDE
142
Oxidizers - Toxic (Liquid)
POTENTIAL HAZARDS
FIRE OR EXPLOSION
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These substances will accelerate burning when involved in a fire.
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May explode from heat or contamination.
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Some will react explosively with hydrocarbons (fuels).
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May ignite combustibles (wood, paper, oil, clothing, etc.).
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Containers may explode when heated.
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Runoff may create fire or explosion hazard.
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HEALTH
TOXIC; inhalation, ingestion or contact (skin, eyes) with vapors or substance may cause severe injury,
burns or death.
Fire may produce irritating, corrosive and/or toxic gases.
Toxic/flammable fumes may accumulate in confined areas (basement, tanks, tank cars, etc.).
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.
Ventilate closed spaces before entering, but only if properly trained and equipped.
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PROTECTIVE CLOTHING
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Wear positive pressure self-contained breathing apparatus (SCBA).
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Wear chemical protective clothing that is specifically recommended by the manufacturer when there is
NO RISK OF FIRE.
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Structural firefighters' protective clothing provides thermal protection but only limited chemical protection.
EVACUATION
Immediate precautionary measure
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Isolate spill or leak area for at least 50 meters (150 feet) in all directions.
Spill
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For highlighted materials: see Table 1 - Initial Isolation and Protective Action Distances.
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For non-highlighted materials: increase the immediate precautionary measure distance, in the downwind
direction, as necessary.
Fire
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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.
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ERG 2024

Oxidizers - Toxic (Liquid)
GUIDE
142
EMERGENCY RESPONSE
FIRE
Small Fire
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Use water. Do not use dry chemicals or foams. CO2 or Halon® may provide limited control.
Large Fire
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Flood fire area with water from a distance.
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Do not move cargo or vehicle if cargo has been exposed to heat.
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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.
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Cool containers with flooding quantities of water until well after fire is out.
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ALWAYS stay away from tanks in direct contact with flames.
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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
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Keep combustibles (wood, paper, oil, etc.) away from spilled material.
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Do not touch damaged containers or spilled material unless wearing appropriate protective clothing.
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Stop leak if you can do it without risk.
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Use water spray to reduce vapors or divert vapor cloud drift.
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Do not get water inside containers.
Small Liquid Spill
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Use a non-combustible material like vermiculite or sand to soak up the product and place into a container
for later disposal.
Large Spill
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Dike far ahead of liquid spill for later disposal.
FIRST AID
Refer to the “General First Aid” section.
Specific First Aid:
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Contaminated clothing may be a fire risk when dry.
In Canada, an Emergency Response Assistance Plan (ERAP) may be required for this product.
Please consult the shipping paper and/or the "ERAP" section.
ERG 2024
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