Thread: 2 naphtol

hello everyone
i have a question
why the 2-naphtol has to be fresh or cold? and why when we wash it with water, we have to use a little bit of cold water?
please answer me
excuse me if i did mistakes in english i'm from france

Originally Posted by diala9721

hello everyone
i have a question
why the 2-naphtol has to be fresh or cold? and why when we wash it with water, we have to use a little bit of cold water?
please answer me
excuse me if i did mistakes in english i'm from france

2-napthol is used for several things, thus it might come in handy if you tell us why you are using it.

ok , we had seperated 2-naphtol from a mixture , so to recrystallize it we had to solve it with a little bit of hot ethanol and then we put some drops of hot water , so after that we filterted it and wash it with a really little bit of cold water.
i hope i was clear

thank you so much for your help

We're calling this "naphtol", but isn't the base stuff "naphtha"? Is the missing "h" intentional? And, isn't naphtha the old name for benzene? Or benzine, same stuff? And, I always heard, "benzol", and "naphthol", were actually impure mixes of liquid hydrocarbons containing mostly benzene. jocular

Originally Posted by PhDemon

The spelling with the missing "h" is how they spell it in France. I don't know what the French have against that "h" though. Maybe it's like Americans pronouncing the word "herb" as "'erb". As Eddie Izzard says, "there's a f***ing H in it!"... Naphthol is a 2 ring aromatic ( can be 1- or 2-naphthol depending on where the OH group is) 2-Naphthol - Wikipedia, the free encyclopedia. I'd never heard of benzol but looking it up it is a crude form of benzene obtained from coal tar containing toluene and xylenes as impurities.

Thank you for this! We always bought "naphtha" at the hardware store to thin paint and clean the brushes, thinking it was benzene, as the drum the store received had "Benzene/Naphtha" as a label. As the years went by, and carcinogenic effects were revealed, it became a priority that benzene be excluded from everything!

I thought two benzene rings fused together were known as Naphthalene. Moth balls. joc