Some organic compounds form peroxides in a matter of months under the right circumstance. Be aware of organic compounds in your lab and remember to mark the expiration date on each container and review them periodically for disposal. Ether is an example of a peroxide forming chemical. To obtain a Peroxide Forming Compounds Assessment Guideline or for technical support, contact Chemical Waste at 685-2848. Pyrophoric material is a material that will spontaneously ignite when it comes into contact with air.
Potassium metal is an example of a pyrophoric material.
Extreme precaution is required when working with this type of material. Highly toxic gas, like Arsine, is not allowed in any quantity without engineering controls and a special permit from the Seattle Fire Department. Smaller quantities should also be isolated whenever practical. A common violation is flammable liquids stored with oxidizers. Call 543-0465 for further information and signs.