Substances - Water-Reactive (Emitting Flammable and Toxic Gases)

• DO NOT USE WATER OR FOAM. (FOAM MAY BE USED FOR CHLOROSILANES, SEE BELOW)

Small Fire

• Dry chemical, soda ash, lime or sand.

Large Fire

• DRY sand, dry chemical, soda ash or lime or withdraw from area and let fire burn.
• FOR CHLOROSILANES, DO NOT USE WATER; use alcohol-resistant foam; DO NOT USE dry chemicals, soda ash or lime on chlorosilane fires (large or small) as they may release large quantities of hydrogen gas that may explode.
• 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.
• Do not get water inside containers.
• 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 or walk through spilled material.
• Stop leak if you can do it without risk.
• DO NOT GET WATER on spilled substance or inside containers.
• Use water spray to reduce vapors or divert vapor cloud drift. Avoid allowing water runoff to contact spilled material.
• FOR CHLOROSILANES, use alcohol-resistant foam to reduce vapors.

Small Spill

• Cover with DRY earth, DRY sand or other non-combustible material followed with plastic sheet to minimize spreading or contact with rain.
• Dike for later disposal; do not apply water unless directed to do so.
• Powder Spill
• Cover powder spill with plastic sheet or tarp to minimize spreading and keep powder dry.
• DO NOT CLEAN-UP OR DISPOSE OF, EXCEPT UNDER SUPERVISION OF A SPECIALIST.