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Author: Subject: latest glassware purchase
tsathoggua1
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[*] posted on 16-7-2017 at 11:29


Lol I hadn't noticed. The blue blisterpack? thats mogadon (nitrazepam) and the brown bottle could be either one of two things, chlormethiazole capsules or a few pieces of elemental silicon, since I end up with plenty of those amber glass bottles that the chlormethiazole comes in, its kinda handy really since it can't be stored in plastic containers. At least, not if you ever want to get the chlormethiazole out again, it attacks plastic pretty badly, although whatever the cap of the bottles it comes in are made out of survive it for at least a week. I think the box to the back of the nitrazepam is pramipexole, one of the non-ergoloid dopamine receptor agonists with a strong bias towards DA-D3 agonism, also an agonist at D2 (primarily the short isoform, although still quite a strong partial agonist at D2l)

I take it for RLS. Don't know if you've ever had it, but RLS really sucks arse. Drives me up the bloody wall sometimes. If the box isn't that, its a bit difficult to make out then its oxycodone IR, since I use it as a backup when the morphine or any improvements on it doesn't adequately make my iffy joints and bursitis stop howling. Or possibly either clonidine or tizanidine, a couple of the imidazoline receptor agonist/alpha2 adrenergic autoreceptor agonists, the former I use to prevent sensory overloading and the latter, as a muscle relaxant since having some surgery that A-didn't help a damn and B-made things worse by inflicting some nerve damage that causes my calf muscle to be permanently contracted without it. Hurts like a bitch, although the tizanidine does help a lot, and generally speaking the morphine/oxy or dipropionyl/dibenzoyl/dibutyrylmorphine/oxy combination finishes off most of the aggro from the calf issue, aside from the paraesthesia and neuropathic type pain, for which opioids only really help when either the dose is very large for the tolerance level of the person taking them, or else a pain med that really packs a punch is used (which is one reason I favour the 3,6-dipropionyl ester. Lasts most of a day from a single IM or subcutaneous dose of around 600-700mg [tolerance, I'm not suggesting anybody try it at that level, its perhaps as potent again compared to diamorphine as the latter is to morphine on a mg to mg basis, but for some reason it lasts an awful long time)

(yes, I have the benzos, the chlormethiazole, oxy, morphine and the like on rx, not that such things are of much import, other than meaning I don't need to result to synthesis myself)
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JJay
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[*] posted on 16-7-2017 at 11:39


It's interesting that your Thiele tube has a ground joint at the top.



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tsathoggua1
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[*] posted on 16-7-2017 at 13:00


Do they not usually have one? its the only one I've actually seen right there in front of me.

I still need to read up on the use of them (in particular the flame-sealing of the capillaries is a little unclear, as to which (or both) ends are meant to be sealed. Got plenty of tubes, a 100 pack was pretty cheap, a couple of dollars on ebay. And since they are disposable, I guess it matters relatively little whether or not they happen to be made of chinesium.


IIRC the thiele tube was around $15-20, forget exactly but within that range give or take a dollar or two either way.
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[*] posted on 16-7-2017 at 13:25


I've never seen one with a ground glass joint, but I haven't seen that many of them really, so perhaps they are common actually.

The capillary tubes with two open ends are kind of a pain to use. Typically you only need to seal one end.

I'm buying some more gas washing bottles (I swear you can't have too many). I should probably also get some U tubes in various configurations....




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tsathoggua1
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[*] posted on 17-7-2017 at 05:05


Damn straight you can't. I've the one atm although will certainly be buying more dreschel bottles.

As for the ground glass joint, your in the same boat as I then only the inverse, since the thiele tube I own is the only one I've seen physically, right in front of me as opposed to pics on ebay, and I more or less ignored the majority on price grounds and picked the one I could best afford. The fact that it has a ground glass joint is simply a bonus. Although not entirely sure what use it could be put to, or why you'd attach a MP testing device to a reaction setup when a capillary needs to be filled and sealed, strapped to a thermometer and the tube filled with oil or concentrated H2SO4, I could see the utility in the joint if thiele tubes just took an internal sample, heated it and measured the MP of a dissolved solid, liquid etc. But since the samples need the preparation that they do I'm at a loss as to why the joint is there, unless simply as a way of keeping it ready and waiting to be used, clipped on to whatever there may bee by way of spare 24/40 male fittings.

That does seem an overly imprecise long shot though. You've gotten me curious now, wondering just why its there and what purpose the joint has. Could it maybe be some kind of custom piece perhaps?
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j_sum1
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[*] posted on 17-7-2017 at 05:45


Um...
Isn't the ground glass joint so that you can drop in your thermometer adapter with the thermometer in it?


As for the wash bottles, my latest purchase was this:
s-l500.jpg - 33kB
http://www.ebay.com/itm/25-125ml-Gas-Sampling-Tube-Glinsky-A...

Fine piece of glassware. The second I opened it I wished I had bought several.
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tsathoggua1
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[*] posted on 17-7-2017 at 13:24


Should have thought of that. Serves me right for posting late at night the day before my scripts are due with all tanks running on fumes and being at best somewhat scattered and shitty-feeling. I was envisioning simply placing the thermometer in the thiele tube without an adapter. Probably because, aside from the ones attached to distillation adapters, my thermometer adapter is really short, in fact I've never used it, I've always used a still head with a plastic stopper stuffed in the side-arm for temp. measurements, unless a flask is either really small or really full.

The arm part of the adapter is only a few inches long and actually its far more use as a cold-finger than it is for use as a thermometer adapter.

The lower piece of glassware, is that a thermometer adapter or a venturi-type aspirator vacuum pump? its difficult to tell if the bore narrows at the point of the ground glass joint, although from the look of the top of it, with the wide hose barb I'm guessing aspirator vacuum. Different from mine, I haven't seen one with a narrow taper like that at the very bottom. Mine has the taper in the bulb and a straight tube right to the end at the point the water exits. Does that, assuming there is a taper in the point where the ground glass joint is also, improve the vacuum (the end taper that is) ?

Because if so, then it's time for toady to grab one of his blowtorches and make a little modification to his aspirator vacuum at the very end, so as to be able to restore it easily if, on hooking the vac line to his vacuum chamber (although it'll take a long time to pump down with a venturi most likely, considering the size of the thing) prior to heating and pulling down to a narrower tip then cutting the end with a diamond cutter or tungsten carbide tool (actually an old cutter from the capstan lathe with a nick in the carbide tip making it no good for use in the lathe but its only a small chip in one corner so its still ideal as a glass knife, which it has been repurposed for. Tsath's all for the waste not, want not mindset and recycles as much as possible to be put to further use)




vac chamber.JPG - 2.3MBpretty things.JPG - 2.3MB
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tsathoggua1
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[*] posted on 17-7-2017 at 13:29


Above is the vacuum chamber in question, the tall black thing with the 1/2'' or so thick acrylic (IIRC) windows top and bottom, couldn't easily get the camera in a point to include the vac gauge and barb.

And a still flask (tubing attached), a bump trap, and a 10ml micro-flask.

Plus the long wire coil with a different sized brush at either end, its for cleaning flasks and the like as when pushed it coils up around inside them to scrub off the typical o-chem related garbage that accumulates. The other pic, is a block of Na.

scrubber.JPG - 2.3MBSodium metal.JPG - 2.2MB
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[*] posted on 17-7-2017 at 13:30


Oops, bad pic of the vac chamber. Better one:

chamber&toxic waste tank.JPG - 2.3MB
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ninhydric1
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[*] posted on 11-10-2017 at 17:46


Recently bought a 24/29 distillation apparatus and a 125 mL 24/29 separatory funnel in order to delve further into organic chemistry syntheses and theory.

I also bought a 50 mL burette with a PTFE stopcock since I broke my ground glass stopcock for my 25 mL ground glass burette. I honestly prefer the PTFE stopcock due to more of a smoother twisting and turning. I'm using this in my "real-life theory" journey where I explore the theoretical part of chemistry. After all, theory before experimentation :). I could also use this for some analytical chemistry I plan to study in the future.

By the way, are there any uses for a burette without a stopcock?

[EDIT: added some missing prepositional phrases. My grammar is deteriorating :(]

[Edited on 10-12-2017 by ninhydric1]
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[*] posted on 12-10-2017 at 12:25


Just bought a 300mm glass vacuum desiccator.
Second hand, but no scratches or chips and it had a thick layer of drierite in it as a bit of a bonus.

Anybody know how hazardous it is to use one of these without a Desi-guard?

I've seen few Desi-guards in my life, so I sort of assume desiccators are pretty safe if you don't drop a brick on them when they're under vacuum or something like that.

But what I don't know about vacuum implosion you could almost cram into the Astrodome.
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[*] posted on 12-10-2017 at 22:01


Quote: Originally posted by ninhydric1  
are there any uses for a burette without a stopcock?


You can make the burette work again by cutting off the stopcock and adding an all ptfe stopcock.
Here is an overpriced example http://www.ebay.co.uk/itm/Detachable-Burette-Stopcock-/26323...




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[*] posted on 12-10-2017 at 23:20


You can also attach a piece of hose and close it with a hose clamp. That's called a "pinchcock."



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[*] posted on 13-10-2017 at 02:21


Quote: Originally posted by JJay  
You can also attach a piece of hose and close it with a hose clamp. That's called a "pinchcock."

Make it even better by adding a pasteur pipette to the end so that you vet nice controlled drips.

Incidentally my first condenser was made from a broken burette.
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[*] posted on 13-10-2017 at 07:37


Quote: Originally posted by JJay  
You can also attach a piece of hose and close it with a hose clamp. That's called a "pinchcock."


That's a good idea, but I just wish it didn't have such an uncomfortable name.
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[*] posted on 14-10-2017 at 17:43


Interesting uses. So I'll have a 25 and 50 mL burette now. That's nice.
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smile.gif posted on 15-10-2017 at 07:19


Yay! Got some new glassware for my birthday along with a few other bits. This includes my first distillation apparatus so I am looking forward to expanding into some organic chemistry. Most of it is lowish quality with a decent amount of bubbles but I am over the moon. Move out the way jam jars - beakers and conical flasks here I come!

IMG_7281[1].JPG - 2.1MB IMG_7360[1].JPG - 1.8MB
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JJay
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[*] posted on 23-10-2017 at 19:04


I splurged and got a 1L fritted funnel in 24/40. I probably don't need one this big, actually, but hey, it should be just the thing for chromic anhydride.

IMG_20171023_185553 - Copy.jpg - 395kB




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[*] posted on 24-10-2017 at 07:13


A fused quartz jam jar jet.

"One of the most interesting of the system oscillations
is the Reynst pot phenomenon. The discovery of this
phenomenon was the result of an accident. F. H. Reynst
dropped a burning match into a near empty can of alcohol.
Instead of simply burning or going out, the can of alcohol
began to rumble at a low frequency. From this beginning,
pulsating combustion became the vocation and avocation to
which Reynst devoted his life." (page 18)
Naval Postgraduate Thesis by Robert Crow entitled Pulsating Combustion Device Miniaturization
http://www.dtic.mil/dtic/tr/fulltext/u2/a035707.pdf




DSC_0010 (1).JPG - 266kB

[Edited on 24-10-2017 by Morgan]
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[*] posted on 25-10-2017 at 05:47


Some jars for Halloween
https://www.michaels.com/clear-skull-jar-with-lid-by-ashland...

Jam Jar Jet Skulls - If you freeze the clip at the 4 second mark there's quite a bit of green light saturating the frame. I only misted in a few shots of boric acid methanol mix from a sprayer and the rest straight methanol so the effect wasn't as verdant.
https://www.youtube.com/watch?v=Z-oOYF7EDYk

Pergamon Press - Pulsating Combustion The Collected Works of F. H. Reynst
With a Jam Jar
http://www.pulse-jets.com/phpbb3/download/file.php?id=13590&...

[Edited on 25-10-2017 by Morgan]
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[*] posted on 26-10-2017 at 09:49


Quote: Originally posted by 18thTimeLucky?  
Yay! Got some new glassware for my birthday along with a few other bits. This includes my first distillation apparatus so I am looking forward to expanding into some organic chemistry. Most of it is lowish quality with a decent amount of bubbles but I am over the moon. Move out the way jam jars - beakers and conical flasks here I come!



I remember my first flask and beakers. Good times...




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[*] posted on 31-10-2017 at 05:24


My 100ml PTFE beakers arrived today about £4.50 each and free postage, excellent value. First test with a dye suggestes they are sintered well. HF chemistry and boiling phosphoric acid now availble to me.

ptfe-beaker1.jpg - 7kB

[Edited on 31-10-2017 by wg48]
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[*] posted on 31-10-2017 at 10:39


Quote: Originally posted by VSEPR_VOID  
Quote: Originally posted by 18thTimeLucky?  
Yay! Got some new glassware for my birthday along with a few other bits. This includes my first distillation apparatus so I am looking forward to expanding into some organic chemistry. Most of it is lowish quality with a decent amount of bubbles but I am over the moon. Move out the way jam jars - beakers and conical flasks here I come!



I remember my first flask and beakers. Good times...

First ground glass was (probably) like a first kiss...

But I wouldn't know




My write-ups are on here...
http://www.MeltThe.Ga or http://ptp.x10.mx
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18thTimeLucky?
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[*] posted on 31-10-2017 at 12:11


Quote: Originally posted by The Volatile Chemist  
Quote: Originally posted by VSEPR_VOID  
Quote: Originally posted by 18thTimeLucky?  
Yay! Got some new glassware for my birthday along with a few other bits. This includes my first distillation apparatus so I am looking forward to expanding into some organic chemistry. Most of it is lowish quality with a decent amount of bubbles but I am over the moon. Move out the way jam jars - beakers and conical flasks here I come!



I remember my first flask and beakers. Good times...

First ground glass was (probably) like a first kiss...

But I wouldn't know


I can confirm. My girlfriend would not be surprised if I said this too her.

[Edited on 31-10-2017 by 18thTimeLucky?]




Yep, I have a blog.
18thtimelucky.wordpress.com
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Morgan
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[*] posted on 31-10-2017 at 12:13


Awhile back I bought this "LECO 550-122 C4303 Carbon Sulphur Analysis Glass Jet Combustion Tube - NOS" on eBay to tinker with.
It's made of quartz but I wasn't expecting the tiny hole in the transition, but still it's useful to me. There's 9 available if for some reason you would want one.


DSC_0004 (10).JPG - 156kB DSC_0010 (2).JPG - 235kB DSC_0013 (1).JPG - 186kB

[Edited on 31-10-2017 by Morgan]
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