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Hygroscopic

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Hypergolic

Definition A hypergolic mixture ignites upon contact of the components without any external source of ignition (heat or flame). There are relatively few instances where this is a desirable event...unless you're a rocket scientist or weapons designer. MSDS Relevance Accidental mixing of incompatible materials can lead to a fire or explosion. Here's one example witnessed by the staff at ILPI of what can happen when incompatibles are mixed. Always read the labels on your bottles (don't assume a chemical's identity by the shape, size or color of the bottle), and know what materials are incompatible with the chemicals that you are using.

Get your DOT explosives placards (in 5 different materials), placard systems and labels at Safety Emporium.

Further Reading

• Fuel Propellants - Storable, and Hypergolic vs. Ignitable at permanent.com.
• A brief discussion of hypergolic propellants at NASA.
• Hypergolic Propellants at ThinkQuest.org.
• NASA's White Sands Test Facility offers specialized expertise in Hypergolic Propellant Handling.

See also: explosive, flammable.

Additional definitions from Google and OneLook.

Disclaimer: The information contained herein is believed to be true and accurate, however ILPI makes no guarantees concerning the veracity of any statement. Use of any information on this page is at the reader's own risk. ILPI strongly encourages the reader to consult the appropriate local, state and federal agencies concerning the matters discussed herein.