2006-07-25 03:22:23 · 4 answers · asked by Jitendra P 1 in Science & Mathematics ➔ Chemistry
lowest temp where a liquid can flash into a vapor. means it can explode about that temp
2006-07-25 08:50:50 · answer #1 · answered by shiara_blade 6 · 0⤊ 0⤋
The flash point is the lowest temperature at which a liquid or solid gives off enough vapour to form a flammable air-vapour mixture near its surface. The lower the flash point, the greater the fire hazard. The flash point is an approximate value and should not be taken as a sharp dividing line between safe and hazardous conditions. The flash point is determined by a variety of test methods which give different results. Two types of methods are abbreviated as OC (open cup) and CC (closed cup).
2006-07-25 10:27:35 · answer #2 · answered by Libby 2 · 0⤊ 0⤋
Refers to flammable, volitile (readily evaporating) liquids.
The higher the temperature, the greater the rate of evaporation---and the greater concentration of flammable vapors in the air.
When the vapors reach a certain concentration, they will burn violently if there is a spark to set them off--perhaps explosively---below that concentration, a spark will be less likely to ignite. Ventilation and room temperature and density of vapor make a difference in the actual hazard.
A flash point well above room temperature means the liquid is RELATIVELY safe. A flash point near or below room temperature is dangerous to leave uncovered--say in a pan. Ethyl ether--engine starting fluid, anesthetic--falls within this category.
2006-07-25 10:31:23 · answer #3 · answered by Anonymous · 0⤊ 0⤋
Temperature in which fuel ignites and extinguishes after the heat is cut off
2006-07-25 10:46:55 · answer #4 · answered by rabuca 2 · 0⤊ 0⤋