Flammability
Flammability - Related Videos
12:34
Experimental Procedure for Laboratory Studies of In Situ Burning : Flammability and Burning Efficiency of Crude Oil
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Cited by 2 •
2018
Here, we present a protocol to simultaneously study the flammability and burning efficiency of fresh and weathered crude oil under conditions that simulate in situ burning operations on the sea.
08:40
Chemical Storage: Categories, Hazards And Compatibilities
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2023
Source: Robert M. Rioux & Taslima A. Zaman, Pennsylvania State University, University Park, PA While the use of various chemicals in experimental research is essential, it is also important to safely store and maintain them as a part of the Environmental, Health and Safety (EHS) program. The properties of chemicals and their reactivity vary broadly and if chemicals are not managed, stored, and labeled properly, they can have harmful or even destructive consequences such as toxic fume...
04:53
Electrical Safety
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2023
Robert M. Rioux & Suprita Jharimune, Pennsylvania State University, University Park, PA Among the many hazards present in the laboratory, electrical hazards are one of the most common we must be cognizant of since most of the laboratory equipment we use requires electricity for operation. Improper handling or operation of electrical devices might lead to electric shock with the potential risk of injury or even death. Electric sparks can lead to fire or explosion (since many flammable...
04:46
Stoichiometry, Product Yield, and Limiting Reactants - Instructor Prep
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2020
Source: Smaa Koraym at Johns Hopkins University, MD, USA Preparation of 25% v/v Ethylenediamine in Deionized WaterExpand Here, we show the laboratory preparation for 10 students working in pairs, with some excess. Please adjust quantities as needed. To set up for this lab experiment, wear the appropriate personal protective equipment, including a lab coat, chemical splash goggles, and gloves. Note: Ethylenediamine is toxic, caustic, flammable, and corrosive. This solution must be...
02:57
Physical and Chemical Properties of Matter
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2020
The characteristics that enable us to distinguish one substance from another are called properties. Physical Properties of Matter A physical property is a characteristic of matter that is not associated with a change in its chemical composition. Familiar examples of physical properties include density, color, hardness, melting and boiling points, and electrical conductivity. We can observe some physical properties, such as density and color, without changing the physical state of the matter...
FAQs
Vapor concentration determines whether enough combustible material is present to support rapid reaction with oxygen. A substance may release vapors, yet those vapors will not necessarily sustain a flame unless their concentration, oxygen availability, temperature, and ignition conditions are suitable. Considering concentration helps explain why the same material can present different fire hazards under different chemical storage or laboratory conditions.
Heat helps a material reach the conditions needed to generate combustible vapors or gases, while ignition energy supplies the initial trigger for rapid reaction with oxygen. If the reaction releases enough heat to maintain the required temperature, combustion can continue after ignition. This relationship is important when evaluating exposure to hot surfaces, flames, or other ignition sources.
Oxygen acts as the reactant that combines with combustible vapors or gases during rapid combustion. Even when a substance can produce such vapors, changes in oxygen availability can affect whether the reaction proceeds vigorously enough to sustain a flame. This makes the surrounding chemical environment relevant to hazard evaluation, storage decisions, and process design.
Temperature influences whether a substance can produce vapors or gases capable of reacting rapidly with oxygen. An ignition source alone may not produce sustained combustion if the material has not reached suitable conditions or if vapor concentration is inadequate. Evaluating both variables provides a more complete understanding of how fire hazards may arise during chemical handling and use.
Safety decisions can be based on the conditions that influence ignition and sustained combustion, including temperature, vapor concentration, oxygen availability, and ignition energy. Reviewing these factors helps identify situations in which a material may present greater fire risk. The resulting assessment supports safer storage practices and more informed handling of chemicals in laboratory environments.
It becomes important whenever chemical processes may expose materials to heat, ignition sources, oxygen, or conditions that increase combustible vapor or gas formation. Considering these variables during design helps evaluate potential fire hazards before operation and supports choices about how materials are handled. This chemistry-based assessment contributes to safer industrial processes and material use.
Comparing materials according to their tendency to ignite and sustain combustion helps users consider fire risk alongside intended chemical function. The relevant evaluation includes vapor formation, temperature conditions, oxygen availability, and ignition energy. Such comparisons can guide the selection of safer solvents, fuels, and industrial materials, especially when reducing potential fire hazards is a design priority.