Propionic Anhydride

Use water spray, dry chemical, "alcohol resistant" foam, or carbon dioxide. Use water spray to keep fire-exposed containers cool. Hazardous reactions may be avoided by using large quantities of water to solubilize the anhydride & fully absorb the heat of reaction.

If material on fire or involved in a fire: 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 foam, dry chemical, or carbon dioxide. Use water spray to knock-down vapors.