Ch. 3 - Properties and Effects Flashcards
Who to call for chemical information in USA, Canada, and Mexico?
CHEMTREC; CANUTEC; SETIQ
3 main types of stress that cause containers to fail
thermal; chemical; mechanical
flash point
min temp at which a liquid or solid gives off sufficient vapors that will ignite in a flash fire
flash fire
fire involving only the vapors of a liquid
fire point
temp at which sustained combustion of a vapor will occur; usually only slightly higher than flash point
ignition temp
min temp at which fuel will ignite and continue to burn; does not require ignition source
flammable range
defines the range in terms of fuel/air mixture that a substance will burn
vapor pressure
how fast a substance turns from a liquid to a gas
vapor density
weight of an airborne concentration of a vapor or gas as compared to dry air
vapor density of air
1
specific gravity of water
1
ph stick results
high=base; low=acid; 7=neutral
What is a strong ph value?
less than 2.5; higher than 12.5
Alpha particles
similar to dust particles and can be stopped easily
Beta particles
more dangerous than alpha particles; can travel 10-15 feet; can be stopped by clothing
