5614 Posted October 18, 2004 Author Posted October 18, 2004 sorry guys, i just saw this thread in a search and found that it had 249 replies and that got really depressing.... i just had to make it 250!!! anyway, anyone else managed to obtain large quantities of H2O2 yet?
budullewraagh Posted October 18, 2004 Posted October 18, 2004 no, but that's because i don't have much of a need for it. i may get some from glow sticks sometime
5614 Posted October 18, 2004 Author Posted October 18, 2004 are those glowy sticks which you bend to make glow different colours, and they only last for about 24 hours... are they made of H2O2???? i got one of those the other day, its worn out now, but i still have it...
budullewraagh Posted October 18, 2004 Posted October 18, 2004 yeah, they have 40% hydrogen peroxide here's the actual reaction: the hydrogen peroxide is realeased into a solution containing oxalic phthalate ester. as this oxalic phthalate ester is oxidized to form phenol and carbon dioxide, the cyclic intermediate 1,2-dioxetane-3,4-dione is formed. one can see that this is a high-energy molecule, as it is resonance equivalent with two molecules of carbon dioxide.
5614 Posted October 18, 2004 Author Posted October 18, 2004 so now that my glow stick has totaly been all "used" up, what would be left if i took it apart? also what could i do with it?
budullewraagh Posted October 18, 2004 Posted October 18, 2004 phenol and carbon dioxide, the cyclic intermediate 1,2-dioxetane-3,4-dione ^are your products i guess you could use the phenol for certain.....ya know i'd imagine that the 1,2-dioxetane-3,4-dione is actually quite a remarkably good oxidizing agent, so see what you can do
5614 Posted October 21, 2004 Author Posted October 21, 2004 and if i open up the glow stick tube it will all just come out, how can i seperate them? obviously the CO2 will float away, but the others will be liquid?
5614 Posted October 27, 2004 Author Posted October 27, 2004 old thread, still, same question still stands (just remembered it). i found my glow stick again... it was red - pink - purple - blue - green - yellow. now (a few weeks after i first got it) it is 90% pink, 5% yellow & 5% empty space! so if i were to chop through the middle, pour the content into a glass bowl, you'd have: "phenol and carbon dioxide, the cyclic intermediate 1,2-dioxetane-3,4-dione" but what can i do with a mixture of all of that together? or how could i single some of it out? basically, what can i do with my old/used glow stick!??
YT2095 Posted October 27, 2004 Posted October 27, 2004 get a UV light, pour the stuff into some glassware that looks cool, and put it in front as an ornament
5614 Posted October 27, 2004 Author Posted October 27, 2004 i may get a UV light. ive been looking at a (actual UV tube length) 18" one and its only £15 (UKP).......... and now ive done a bit of research (hence my ive been 'viewing' this thread for ages!) ive now found a (actual tube UV length) 2ft [600mm] for the same £15 (at maplins), so i will be getting that soon. maplins links only occasionaly work but i'll give it a go: http://www.maplin.co.uk/Module.aspx?ModuleNo=24245&TabID=1&source=15&WorldID=&doy=27m10 seems like quite a cool 75W UV blacklight, which you can just screw into any normal light bulb socket, quite good for turning light rooms into UV rooms! anyone else with ideas for what to do with left over remains of a glow stick? (phenol and carbon dioxide, the cyclic intermediate 1,2-dioxetane-3,4-dione)
budullewraagh Posted October 27, 2004 Posted October 27, 2004 i would imagine that the 1,2-dioxetane-3,4-dione would be a decent oxidizer...but i dunno how effective it would be as it decomposes easily.
Lance Posted October 27, 2004 Posted October 27, 2004 maplins links only occasionaly work but i'll give it a go: http://www.maplin.co.uk/Module.aspx?ModuleNo=24245&TabID=1&source=15&WorldID=&doy=27m10 seems like quite a cool 75W UV blacklight' date=' which you can just screw into any normal light bulb socket, quite good for turning light rooms into UV rooms! [/quote'] That’s not a UV light anymore than a normal light bulb is. It’s just a normal bulb with a filter that blocks a lot of visible light. So it actually emits less UV light than a normal bulb.
5614 Posted October 27, 2004 Author Posted October 27, 2004 That’s not a UV light anymore than a normal light bulb is. It’s just a normal bulb with a filter that blocks a lot of visible light. So it actually emits less UV light than a normal bulb. how do you know? or is it a guess? if it was a normal bulb, then surely it wouldnt as it says: "large amounts of Ultra Violet light". that is a trusted company, i dont think theyd say it for no reason. also, if the visible light was blocked out then why would it produce less UV than a bulb, surely it would be the same? would imagine that the 1,2-dioxetane-3,4-dione would be a decent oxidizer...but i dunno how effective it would be as it decomposes easily. how do i seperate all of these chemicals which i will get from the glow stick?
Lance Posted October 27, 2004 Posted October 27, 2004 how do you know? or is it a guess? if it was a normal bulb' date=' then surely it wouldnt as it says: "large amounts of Ultra Violet light". that is a trusted company, i dont think theyd say it for no reason. also, if the visible light was blocked out then why would it produce less UV than a bulb, surely it would be the same?[/quote'] You may be right; I'm just speaking from past experiences. It would produce less because they are not going to use extremely advanced filters to block all visible and let through all UV. Remember, UV is not visible light. Of course they may use phosphors that convert visible to UV but I have never heard of that done with incandescent bulbs. Only way to know is to buy it and see what you think.
Gilded Posted October 28, 2004 Posted October 28, 2004 Oooh, UV. If I had some U-marbles and an UV-light, I would play with them aaaall day.
5614 Posted October 28, 2004 Author Posted October 28, 2004 "Remember, UV is not visible light" are you sure?... im always seeing UV light everywhere [/sarcastic] have you got any sources to clarify that [/ultra-sarcastic].... ya think!?!?!?!?!!! "You may be right; I'm just speaking from past experiences" what you are thinking of is quite liekly, but it says large amounts of UV produced, so im not sure! http://www.glassartists.org/Gal127_uranium_marbles.asp shows some good U-marbles
Lance Posted October 28, 2004 Posted October 28, 2004 "Remember' date=' UV is not visible light"[/i']are you sure?... im always seeing UV light everywhere [/sarcastic] have you got any sources to clarify that [/ultra-sarcastic].... ya think!?!?!?!?!!! Hey well most 'normal' people think that uv light is purple because most 'normal' uv lights have crapy filters that let purple light through. Sheesh. Dont make me get my saracastic tags out.
5614 Posted October 28, 2004 Author Posted October 28, 2004 yeah, i really hate people who dont have a basic knowledge of physics... oh well, what can you do! how do U-marbles work? ive never seen one (in real life) before... im guessing the U is uranium, so are they dangerous??? tell me the basics, really, never heard of em before!...
Gilded Posted October 29, 2004 Posted October 29, 2004 About the U-marbles: The usual background radiation is about 25-50 CPM (Counts Per Minute, or detected disintegrations per minute). A uranium marble held right next to the detector would have probably measured about 25-50 CPM more than the background radiation. U-238 (depleted uranium) is actually quite fun when it's inside glass (letting basically no alpha through), because its half-life is so long (it's the under 1000 year half-lifed ones you should look out for). The basics: A hollow glass ball. Within the ball there's usually 98% vaseline and 2% uranium. And that's about it. I can't give a physical reason for the glow, though. Perhaps someone else can?
budullewraagh Posted October 29, 2004 Posted October 29, 2004 yeah, it's the radiation that is exposed to UV
Gilded Posted October 29, 2004 Posted October 29, 2004 "yeah, it's the radiation that is exposed to UV" You mean that when UV light hits an alpha particle, it emits visible light?
5614 Posted October 29, 2004 Author Posted October 29, 2004 so its just some U-238 inside a magnet soz! marble.... and its not dangerous and it makes cool effects when near a UV source, thats quite cool. i see you can get them on e-bay, are they popular? what kinda shop (in UK!) might sell them?
Gilded Posted October 29, 2004 Posted October 29, 2004 They seem to be somewhat popular in the US, and were more popular in the 50's or so (nowadays people are awfully skeptic about ionizing radiation :< ). "so its just some U-238 inside a magnet" Where did that magnet thing come from.
5614 Posted October 29, 2004 Author Posted October 29, 2004 ahhhh, its this magnet and light thread, its getting to me!!!! i meant a marble.... U-238 inside a marble are they safe?
budullewraagh Posted October 30, 2004 Posted October 30, 2004 not particularly, but it depends on how much radiation is emitted from the marbles
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