Glass Pipe QUESTION

[420purplehaze420]

no dont worry man thats actually not the glass (unless its that leaded glass shit but i doubt it) its the chemicals from the lighter and the burning fluid, that happens on any glass surface trust me, i also had a brand new glass bowl and when you put a light UNDER it there is black residue left behind its good man toke it up

[dustoned]

yeah, they put lead in glass during the industrial revolution.

either that, or it's pyrex coating. but i doubt it.

[Goodman3eb]

Okay, guys, a couple things:

-First, leaded glass is still common nowadays; they don't put lead in window glass anymore, but any high quality cut crystal is made from leaded glass.

-Second, Pyrex is not a coating. They cool the glass down very slowly after forming it so it cures very hard and strong, sort of like tempering steel. There's no coating-- you're thinking of safety glass.

-Finally, the black residue is from the lighter. Butane is, chemically speaking, C4H6. When burned (2C4H6 + 11O2 --> 8CO2 + 6H2O), the IDEAL results are just gases-- carbon dioxide and water vapor. However, the reaction isn't perfect because of impurities in the butane and other environmental factors, so you get other byproducts--namely, carbon. That black stuff is just carbon residue left on your pipe by the flame.

Hope that clears things up.

[passit420]

how the fuck do you knw that shit holy fuck

[dustoned]

the man most likely majors/minors in chemistry.

[passit420]

o.

sweet.

[Goodman3eb]

Actually, last year's Chem AP course taught me the combustion stuff; the lead stuff I learned while helping my mom pick out a nice leaded glass vase; and the pyrex stuff I learned when I asked my mom, "hey mom, what's with all the glass bowls you have in the kitchen that say Pyrex on the bottom?"

But on a side note, I do plan to major in chemical engineering next year.