Environmental Health and Safety

Combustible Metals

Do you have any combustible metals or combustible metal compounds in your laboratory? If so, you will need to have a type D fire extinguisher. In the event of a fire, types A, B, and C fire extinguishing agents will react with combustible metals. Therefore, unique agents such as potassium and sodium are used in type D fire extinguishers to put out fires with combustible metals. Type D fire extinguishers are yellow and have a five pointed star on them. Please contact EHSEM at 3-5061 if you are in need of this type of fire extinguisher. The following is a list of combustible metals that require a type D fire extinguisher:

calcium
cerium
cesium
lithium
lutetium
magnesium and magnesium alloys
neodymium
phosphorus
potassium
potassium-sodium alloys
rubidium
sodium
strontium

aluminum (powder)
beryllium (powder)
nickel catalyst (Raney)
titanium (powder)
zinc (powder)
zirconium (powder)

aluminum phosphide
calcium carbide
gallium arsenide
gallium phosphide
lithium aluminum deuteride
lithium aluminum hydride
lithium aluminum hydride bis(tetrahydrofuran)
lithium amide
lithium borohydride
lithium-6 deuteride
lithium hydride
lithium tetraphenylborate tris(1,2-dimethoxyethane)
lithium tri-tert-butoxyaluminohydride
magnesium hydride
phosphorus pentasulfide
potassium hydride
Red-Al
sodium aluminum hydride
sodium bis(2-methoxyethoxy)aluminum hydride in toluene
sodium borohydride
sodium borohydride cobalt-doped
sodium borohydride on alumina
sodium hydride
zinc phosphide