Hazardous Properties of Materials
Corrosivity
Corrosivity refers to the ability of a substance or environment to cause corrosion, which is the deterioration of materials due to chemical reactions with their surroundings. Corrosion can lead to material failure, structural damage, and safety hazards, making it a critical consideration in chemical engineering.
Corrosion rates are influenced by factors like temperature, humidity, concentration of corrosive agents, and the presence of impurities. Higher temperatures and more aggressive environments can accelerate corrosion.
Solved Example: 9301-01
Acidic waste possess ___________ character.
A. Ignitable
B. Corrosive
C. Toxic
D. Reactive
Correct Answer: B
Solved Example: 9301-02
Identified character of corrosivity is:
A. pH
B. Temperature
C. Pressure
D. Friction
Correct Answer: A
Flammability
Flammability is the ability of a substance to ignite and sustain combustion when exposed to an open flame, spark, or heat source.
The flash point is the lowest temperature at which a liquid gives off sufficient vapor to form an ignitable mixture in the air near the surface of the liquid. It is a crucial parameter in classifying flammable liquids.
Original: Wikiwayman Vector: Power.corrupts, CC BY-SA 3.0, via Wikimedia Commons
