the rain started pouring when i'm on my way home after a visit to my girl's house. too bad because i intend to walk and feel the good weather.
i pulled my wallet and found out that i have 20 pesos - too big for a tryke ride. so, i went back to mercury drug and started to roam around - look for something cheap to buy to have a change. my feet brought me to para-di-chlorobenzene. so what's para-di-chlorobenze? i am a chemical engineer and knows this organic substance very well.
para-di-cholorobenzene is one of the three forms of di-chlorobenze - other two are meta-di-chlorobenzene and ortho-di-chlorobenzene. in terms of molecular weight, they are all the same. but in terms of stability, halides (common organic term for halogens like chlorine and bromine) are electron withdrawing group (EWG) but tend to directs the second halide into an ortho or para position.
picture of para-di-chlorobenzene from here.
so what am i talking about? everything on earth tends to look for a place or state which has the lowest energy level. so as these reactions. people thought that these elements/chemicals are just irritants. but most often than not, they make our lives more comfortable. we just tend to overuse them. you can see more details in aromatic reactivity and electrophilic aromatic substitution.
anyways, what's this para-di-chlorobenzene? if you buy albatross, try to read the label. they are now used to replace the traditional naphthalene.
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