How do matches ignite?
Summer is the season of barbecues. And to light the fire, nothing like matches. Little things that have been going on for a long time in our daily lives, without really worrying about the many researches that were needed to develop them.
To crack a match:
we all have already done that. To light a candle, gas stove and. In a few tenths of a second, the little red tip ignites. In a process that seems extremely simple but yet requires a lot of research and improvements. The result of the safe and nontoxic which ignite by and stay on long enough.
Let’s first examine the different compounds involved. On the box of matches, a scraper made of glass powder and red. Red phosphorus, because it is not flammable and nontoxic. The match, meanwhile, is made of poplar . It is impregnated with ammonium phosphate and its end is covered with paraffin. The also deposited with an adhesive, a mixture of chlorate (KClO 3 ), antimony trisulphide (Sb 2 S 3 ) and ammonium phosphate ((NH 4 ) 3 PO 4). Note in passing that the red of the end of the match is only due to a dye chosen only … to look good!
With each compound, its role
Now let’s look at the role of each of these compounds. Ammonium phosphate, first, is a retarder that helps the match not to burn too fast. It also prevents the release of too muchat the end of . Paraffin, for its part, as a good , will notably act as a guide for the , part of the match’s head, to move towards its tail.
When the match is cracked on the scraper, the glass powder heats up. An increase in temperature that turns red phosphorus into white phosphorus. However, it is particularly flammable. And it is he who will serve to start the flame. On the match head, the potassium chlorate decomposes, releasinguseful for combustion. As for antimony trisulphide, it is used as fuel.
The chain ofthat then occurs releases dioxide (SO 2 ). It is this that will give this particular of burnt match.