1,4-PENTADIENE

A colorless liquid. Less dense than water and insoluble in water. Hence floats on water. (USCG, 1999)

• Highly Flammable
• Polymerizable

Highly flammable. Insoluble in water.

Special Hazards of Combustion Products: Fire may produce irritating and poisonous gases.

Behavior in Fire: Flammable vapor may spread away from spill. Container may explode in heat of fire. Vapor explosion hazard indoors, outdoors or sewers. Runoff to sewer may create fire or explosion hazard. Fire may generate toxic and irritating gases. (USCG, 1999)

Vapor may cause dizziness or suffocation. Contact may irritate skin and eyes. (USCG, 1999)

1,4-PENTADIENE may react vigorously with strong oxidizing agents. May react exothermically with reducing agents to release gaseous hydrogen. Can undergo exothermic polymerization reactions in the presence of various catalysts (such as acids) or initiators. May undergo autoxidation upon exposure to the air to form explosive peroxides. Violent explosions have occurred at low temperatures in ammonia synthesis gas units. These explosions have been traced to the decomposition of addition products between dienes such as this one and oxides of nitrogen [Bretherick, 1995].

• Hydrocarbons, Aliphatic Unsaturated
• Polymerizable Compounds

Use caution: Liquids with this reactive group classification have been known to react with the absorbents listed below.

• Mineral-Based & Clay-Based Absorbents
• Dirt/Earth

Excerpt from 128 [Flammable Liquids (Water-Immiscible)]:

IMMEDIATE PRECAUTIONARY MEASURE: Isolate spill or leak area for at least 50 meters (150 feet) in all directions.

LARGE SPILL: Consider initial downwind evacuation for at least 300 meters (1000 feet).

FIRE: If tank, rail car or tank truck 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. (ERG, 2020)

Fire Extinguishing Agents Not to Be Used: Water may be ineffective since this material floats.

Fire Extinguishing Agents: Small fires: dry chemical, CO2, water spray, fog or foam; large fires: water spray, for or foam. (USCG, 1999)

Excerpt from 128 [Flammable Liquids (Water-Immiscible)]:

ELIMINATE all ignition sources (no smoking, flares, sparks or flames) from immediate area. All equipment used when handling the product must be grounded. Do not touch or walk through spilled material. Stop leak if you can do it without risk. Prevent entry into waterways, sewers, basements or confined areas. A vapor-suppressing foam may be used to reduce vapors. Absorb or cover with dry earth, sand or other non-combustible material and transfer to containers. Use clean, non-sparking tools to collect absorbed material.

LARGE SPILL: Dike far ahead of liquid spill for later disposal. Water spray may reduce vapor, but may not prevent ignition in closed spaces. (ERG, 2020)

Wear self-contained positive pressure breathing apparatus and full protective clothing. (USCG, 1999)

No information available.

INHALATION: Move victim to fresh air. If not breathing, give artificial respiration. If breathing is difficult, give oxygen.

EYES OR SKIN: Flush immediately with running water for at least 15 minutes. Remove and isolate contaminated clothing and shoes at the site. (USCG, 1999)

• ALLYLETHYLENE
• DIVINYLMETHANE
• PENTA-1,4-DIENE
• 1,4-PENTADIENE