Ethylene Oxide

CAS RN:75-21-8

Fire Fighting Procedures

GAS: Poisonous gases are produced in fire. Do not estinguish the fire unless the flow of gas can be stopped and any remaining gas is out of the line. Specially trained personnel may use fog lines to cool exposures and let the fire burn itself out. Vapors are heavier than air and will collect in low areas. Vapors may travel long distances to ignition sources and flashback. Vapors in confined area may explode in fire. Storage containers and parts of containers may rocket great distances, in many directions. If materials or contaminated runoff enters waterways, notify downstream users of potentially contaminated waters. Notify local health and fire officials and pollution control agencies. From a secure, explosion-proof location, use water spray to cool exposed containers. If cooling streams are ineffective (venting sound increases in volume and pitch, tank discolors, or shows any signs of deforming), withdraw immediately to a secure position. If employees are expected to fight fires, they must be trained and equipped. LIQUID: Poisonous gases are produced in fire. Use dry chemical, carbon dioxide, or foam extinguishers. Although soluble in water, solutions will continue to burn until diluted to approximately 22 volumes of water to one volume of ethylene oxide. Vapors are heavier than air and will collect in low areas. Vapors may travel long distances to ignition sources and flashback. Vapors in confined area may explode in fire. Storage containers and parts of containers may rocket great distances, in many directions. If materials or contaminated runoff enters waterways, notify downstream users of potentially contaminated waters. Notify local health and fire officials and pollution control agencies. From a secure, explosion-proof location, use water spray to cool exposed containers. If cooling streams are ineffective (venting sound increases in volume and pitch, tank discolors, or shows any signs of deforming), withdraw immediately to a secure position. If employees are expected to fight fires, they must be trained and equipped.
Fire extinguishing agents: water.
Stop flow of gas if possible. Combat fires from behind barrier, with unmanned hose holder or monitor nozzle. Flood discharge area with water. Cool exposed containers and protect men effecting shut off with water.
Carbon dioxide and dry-chemical extinguishers are useful against small fire.
Use flooding quantities of water as fog. Use water spray, dry chemical, "alcohol resistant" foam, or carbon dioxide. Use water spray to keep fire-exposed containers cool. Explosive decomposition may occur under fire conditions. Fight fire from protected location or maximum possible distance.
Water may be ineffective.
If material on fire or involved in fire: Do not extinguish fire unless flow can be stopped. Use water in flooding quantities as fog. Solid streams of water may be ineffective. Cool all affected containers with flooding quantities of water. Apply water from as far a distance as possible. Use "alcohol" foam, dry chemical or carbon dioxide. /Ethylene oxide or ethylene oxide with nitrogen/
Evacuation: If fire is prolonged and material is confined in the container-consider evacuation of one (1) mile radius. If fire becomes uncontrollable or container is exposed to direct flame-consider evacuation of one (1) mile radius. /Ethylene oxide or ethylene oxide with nitrogen/
Find more information on this substance at: Hazardous Substances Data Bank , TOXNET , PubMed