itwasntme Posted October 25, 2006 Posted October 25, 2006 I was so bored today that I esterified MEG and boric acid... http://img157.imageshack.us/img157/7969/gfcc7.jpg Burns very pretty, pure green, no other colors in flame. The image is pretty noisy because it was done with high shutter speed and ISO 1000 Whats MEG? I tried some denatured alcohol on paper towel rolled in some boric, it was green with blue on the bottem. I'm going to make one for a jack-o-lantern this weekend. Anyone know how to make it pure green?
oriansbelt Posted October 26, 2006 Posted October 26, 2006 Is it just me or was there an other topic under "APC Information Database?" I could have sworn that there were 3 topis under it on the main page and now I only see two. Am I imagining things?
h0lx Posted October 26, 2006 Posted October 26, 2006 MEG is MonoEthyleneGlycol.I added a spoonful to 10ml and heated until all dissapeared. Bringing to a boil is a good idea. Oh, anyone organic genius here, that can tell me how far it esterifies, I want to calculate the exact amounts. will it come to BO3-(CH2-CH2)3-O3B or will the flat structure of BO3 forbid it?
fredjr Posted October 26, 2006 Posted October 26, 2006 Here's a 15Mb wmv file of the 2006 PGI superstring ripped from the 5 dvd set of the convention.http://rapidshare.com/files/775220/SuperString06.wmv.html
Mumbles Posted October 26, 2006 Posted October 26, 2006 Boric acid, despite having 3 hydrogens, really only protonates once as far as acidity goes. Also, Boric acid, while indeed being planar, has open orbitals above and below the plane, of which it can use to form ligands and bonds and such. Boric Acid is a weird compound, so it is hard to give a definitive answer. The combonation you have is weird. Due to the spatial restrictions, I doubt it would form the molecule you describe with 3 ethylene glycol groups between two boric acid groups. More than likely it is a single central boric acid group with three radial ethylene glycol's esterfied. Perhaps there could be other borics on the end to form a polymer of sorts, but not in the form you describe.
oriansbelt Posted October 26, 2006 Posted October 26, 2006 I knew it! The "Members Tutorials" was missing when I posted last.. well atleast I'm to crazy....
h0lx Posted October 27, 2006 Posted October 27, 2006 BTW I had a wonderful idea, Make a volatile ester(Methanol) with boric and make a fireball with it.
pa_pyro Posted October 27, 2006 Posted October 27, 2006 Good idea...hehe I can see little kids running from a green fireball. Unfortunately I've never had success with liquid fireballs. The tube that I use has a 1/2" ID and is 4" tall. Whenever I try to make fireballs with it, the plastic wrap with the flammable liquid inside catches fire and fails to disperse it into a fireball. Instead it shoots a flaming ball of plastic wrap into the air... Any ides to improve my "fireballs", I use BP lift powder for the charge. I might try benzolift to see if the power makes a difference.
Pretty green flame Posted October 27, 2006 Posted October 27, 2006 Good idea...hehe I can see little kids running from a green fireball. Unfortunately I've never had success with liquid fireballs. The tube that I use has a 1/2" ID and is 4" tall. Whenever I try to make fireballs with it, the plastic wrap with the flammable liquid inside catches fire and fails to disperse it into a fireball. Instead it shoots a flaming ball of plastic wrap into the air... Any ides to improve my "fireballs", I use BP lift powder for the charge. I might try benzolift to see if the power makes a difference. I suggest using a larger bore tube and encasing the LIFT charge in a liquid proof plastic wrap and igniting it electrically. You just pour the volatile liquid mix down the pipe and lower the lift bag in and fire it.
rocket Posted October 28, 2006 Posted October 28, 2006 I’ve got the method you described pa-pyro to work, I use a 1” tube and use BP as lift. I use my fastest lift with it and got a small fireball. When I use slower BP I got the flaming plastic ball instead which landed in the garden.
Chemguy Posted October 28, 2006 Posted October 28, 2006 Off topic.Fireworks are here!!! :D Sorry, i'm so happy, but this will probably be the last year over here.
pa_pyro Posted October 28, 2006 Posted October 28, 2006 Thanks for the advice, I'll get anx-mas lighter igniter set up. Oh, and chemguy what do you mean by last year of fireworks? Last commrcial display maybe?
Chemguy Posted October 28, 2006 Posted October 28, 2006 Last year they are (legally) allowed to be sold.There will be public displays though.
h0lx Posted October 28, 2006 Posted October 28, 2006 http://img262.imageshack.us/img262/2752/pa250245cu9.jpgPic of Al powder sprinkled into flame, 1 decent photo of 10, It was really hard to get the timingi right.
Swany Posted October 29, 2006 Posted October 29, 2006 I need some quick help: I have to create a 12v power supply that can provide 1.5 amps max, .8 amps min, out of AA, AAA, C, D or whatever types of batteries and I can get resistors of various values. I have no idea how to work the problem, but I am looking into it. If someone could help me out quickly I would be grateful. EDIT: Neveryoumind. Momentary lapse of reason, I have been helped. Ohms Law --bless mister Ohm-- states that I need a 7 ohm resister, about.
DeAdFX Posted October 30, 2006 Posted October 30, 2006 Hot damn I love casting/burning Ammonium Perchlorate composite propellants. Note to self buy bulk AP. The rumble and the sparks get me everytime.
maximusg Posted October 30, 2006 Posted October 30, 2006 man i wish i had one of these machines http://www.ctpyro.com/resources/WASP+II+QT+2.mov
TheSidewinder Posted October 30, 2006 Posted October 30, 2006 Well, since this is the random thread and there's no other place suitable... In January, I'm going to Australia! Woohoo!I get to be there for Australia Day on the 25th. Fireworks, fireworks, fireworks!! Yahhoooooo! Anyone here living near Perth? See ya in January. M
matell Posted October 30, 2006 Posted October 30, 2006 i have a pink star formula that it is like lancaster chlorate#1 but instead of potassium chlorate it have potassium perchlorate. it is a good formula or not? Thanksmat
Mumbles Posted October 30, 2006 Posted October 30, 2006 Give the formula, and we would be able to better give you an answer. Colors can be very different with just a few percent differences. Do you mean it is the same as Lancaster #1 but with KClO4 instead of KClO3, or do you mean the formula is similar? To be able to tell you, we need to know this info.
Kilo_G Posted October 31, 2006 Posted October 31, 2006 protonates When you can use this word in a complete sentence you know too much. Silly science.
TheSidewinder Posted October 31, 2006 Posted October 31, 2006 protonatesWhen you can use this word in a complete sentence you know too much. Silly science. Tsk, tsk, tsk. Annoyeth not the Chemistry Geek, lest he mix his Potions of Illuminations and smite thee with them...... M
rocket Posted October 31, 2006 Posted October 31, 2006 Well, since this is the random thread and there's no other place suitable... In January, I'm going to Australia! Woohoo!I get to be there for Australia Day on the 25th. Fireworks, fireworks, fireworks!! Yahhoooooo! Anyone here living near Perth? See ya in January. M I’m pretty sure there are no aussie’s that post on the forum that live over Perth way but I think there is on UKR, I know there are a few over there though. However I may be wrong.
Chemguy Posted October 31, 2006 Posted October 31, 2006 We have fireworks too, they are on sale now. It is such a good feeling to know that I can just buy them.
maximusg Posted October 31, 2006 Posted October 31, 2006 Amleth and a few others on UKR are from the west
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