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yobbo II
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I think this is an 'Iodine' stopper.
https://www.sciencemadness.org/whisper/files.php?pid=625589&...
How does having a funnel neck allow an airtight seal without grease?
Yob
[Edited on 13-1-2025 by yobbo II]
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drakedevel
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I agree, that stopper does look like one that goes with an iodine flask.
The wet ground glass joint is what provides the airtight seal, just like with grease. The funnel neck provides a convenient way to get the joint
thoroughly wet and supplies a reservoir of excess liquid so evaporation takes longer to compromise the seal.
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SuperOxide
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Quote: Originally posted by Texium  | And this is the $5 Bargain Bin. Every piece in these pictures costs $5, and if you order at least $50 worth of chemicals and/or equipment from me,
I'll throw one of your choice in for free, while supplies last.
B5A 2000 mL Kimax RBF, neck is broken. Flask has some external scratches/etching.
B5B 500 mL Pyrex Florence flask, no ground glass joint, small crack in the top of the neck but still usable.
B5C 600 mL Pyrex Florence flask, top of neck lip is ground glass as if it was designed to fit flush with another piece and be clamped together
B5D 125 mL Pyrex distilling flask, like-new condition
B5E 250 mL Pyrex iodine flask. Takes 24 mm stopper. Sold
B5F 250 mL Bellco Erlenmeyer flask with extra long, wide neck.
B5G 250 mL heavy-walled Pyrex filter flask with broken hose barb
B5H 200 mL Kimax volumetric flask with unusual flared top
B5I 24/40 Kjeldahl bulb with hose barb outlet
B5J Pyrex gravity chromatography column with fritted disc at bottom and glass stopcock. Will provide fitting
stopcock. Sold
B5K Pyrex chromatography column with 125 mL solvent reservoir and glass stopcock. Will provide fitting stopcock. Takes 19
mm stopper, which may be provided if I find more. Sold
B5L 60 mL Pyrex addition funnel with glass stopcock and long stem Sold
B5M ~30 mL addition funnel, angled. Will provide fitting glass stopcock.
B5N Tiny bubbler
B5O 25 mL Dean-Stark trap without ground glass joints. Will provide fitting glass stopcock.
B5P Huge 3-way glass stopcock
B5Q ~1 L Pyrex bottle with 2 24/40 joints
B5R 200 mm Pyrex Vigreux column without ground glass joints.
B5S Large glass tube with 24/40 male joint on one end and 45/50 male joint on other end
B5T Weirdly tall Pyrex 24/40 "h" still head for vertical distillation setup
B5U Pyrex 24/40 odd angled adapter Sold
B5V Unusual Pyrex still head with 2 24/40 male joints and one 19/38 female joint
B5W Kontes 24/40 Y adapter
B5X Pyrex 29/42 tube for cold trap or gas bubbler Sold
B5Y Ace 29/42 tube for cold trap or gas bubbler Sold
B5Z Large Pyrex Dean-Stark trap (?) with male 24/40 joint and female 29/42 joint. Bottom joint is broken but still intact enough to work.
B5AA Strange giant reactor thing. 60/50 center joint, 24/40 and 14/35 side arm joints. Third side arm is broken off.
[Edited on 1-10-2025 by Texium] |
Just curious, what could B5S ("Large glass tube with 24/40 male joint on one end and 45/50 male joint on other end") be used for? Im curious why it
has two male joints instead of two female joints (but maybe im just more used to seeing tubes with female joints on them)
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Texium
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I have no clue, and that is why it is in the bargain bin 
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SuperOxide
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Btw, I received my order of some 45/50 condensers and reagents from Texium last week - Excellent quality and price. Very happy with my purchase
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Texium
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I posted updated spreadsheets yesterday which reflect the flurry of sales I've had the last month. However, I've decided that after finishing up the
orders that I'm currently working on, I'm going to put a pause on further orders for the next few months. I'm preparing for my dissertation defense,
and I need to limit other obligations and distractions as much as possible until I'm past that. I will likely resume sales this summer though, so feel
free to still send me a U2U if there are items you would like to put on reserve. I just won't fulfill the order until summer.
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moviez
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| Quote: Originally posted by Texium | | I posted updated spreadsheets yesterday which reflect the flurry of sales I've had the last month. However, I've decided that after finishing up the
orders that I'm currently working on, I'm going to put a pause on further orders for the next few months. I'm preparing for my dissertation defense,
and I need to limit other obligations and distractions as much as possible until I'm past that. I will likely resume sales this summer though, so feel
free to still send me a U2U if there are items you would like to put on reserve. I just won't fulfill the order until summer. |
Best of luck! Be a doctor soon 
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Texium
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I am accepting orders again starting now!
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Radiums Lab
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I ordered some Caesium Chloride from Texium and it arrived safely and smoothly.
He was very patient during the delivery process too.
Water is dangerous if you don't know how to handle it, elemental fluorine (F₂) on the other hand is pretty tame if you know what you are doing.
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bariumbromate
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can i please get the 1-H-tetrazole price?
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Texium
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$15 for 1 gram. I can provide a discount if you want to buy all of it, but I have to weigh what I have.
It's less than 5 grams.
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Texium
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I'm attaching a PDF version of my spreadsheets here upon request. These files will not be updated in the future unless someone asks, so unless you
can't open xlsx, please see the files posted in the OP for the most up-to-date info.
A couple updates:
-Potassium iodide is mostly sold out. Only 100 g portions and smaller are now available, and once another 100 g sells, that's it.
-Malonic acid is also running low. Only 25 g and smaller portions are now available.
-I've decided I'm ok with selling mercury salts. They will only be available to buyers in the contiguous US and must be picked up locally or shipped
by UPS ground. I have mercury(II) chloride, bromide, and iodide available. See the spreadsheet for pricing details.
Attachment: Chemicals For Sale 9-13-25.pdf (45kB)
This file has been downloaded 141 times
Attachment: Glassware For Sale 9-13-25.pdf (53kB)
This file has been downloaded 87 times
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wvcruffler
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excellent transaction cheers!
Hey what’s that hissing sound?
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violet sin
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I had an easy time dealing with texium, the price was great, shipping fast and friendly. Everything arrived well and good. Thank you kindly good sir
I would easily order from you again, thanks for the opportunity to add to my collection, something I've wanted for a long time.
-VS
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SnailsAttack
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hey, I'm interested in purchasing the glassware for a simple distillation setup. what I specifically want is a setup that can distill ammonia,
hydrochloric acid and/or nitric acid and collect their vapors in water.
I'm not sure if this requires the distilled vapor to be bubbled into some water or if the same effect is achieved from the water that condenses in the
condenser before dripping into the receiving flask. I don't know exactly how it works in practice.
I haven't worked with air-tight 'flow-control' glassware before but I think I would need the following items:
- one 500 mL round-bottom flask (24/40) (item 22j)
- one 250 mL round-bottom flask (24/40) (item 22f)
- one 150 mm liebig condensor (24/40) (item 43d or 43e)
- one 75° adapter (24/40) (i think i want the one with the 10/30 thermometer joint? (item 46b))
- one 105° adapter (24/40) (i'm unsure whether I want the one with the vacuum take-off (item 50c or 50d) or without the take-off (item 51b), or
both.)
in addition to the required glassware I would need a thermometer, rubber tubing for the condensor and some of those little plastic clamps that fit the
24/40 glassware. I'd also need a metal stand with a clamp and a heating mantle to fit the 500 mL flask, if those are things that you have and would be
willing to sell me.
[Edited on 11/12/2025 by SnailsAttack]
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davidfetter
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| Quote: Originally posted by SnailsAttack | hey, I'm interested in purchasing the glassware for a simple distillation setup. what I specifically want is a setup that can distill ammonia,
hydrochloric acid and/or nitric acid and collect their vapors in water.
[Edited on 11/12/2025 by SnailsAttack] |
What those projects require before anything else is a good fume hood with some way to scrub what it pulls through before exhausting it to the rest of
the world.
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SnailsAttack
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| Quote: Originally posted by davidfetter | | What those projects require before anything else is a good fume hood with some way to scrub what it pulls through before exhausting it to the rest of
the world. |
my bedroom has a window and sometimes it happens to be open while i'm doing chemistry
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TheFuriousMoleFister
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Sodium Nitrite Still Available?
Hi
I was wondering if you still have sodium Nitrite available? I have tried my hand at synthesizing it using both the sodium metabisulfite reaction and
as well as the graphite+NaNO3+CaOH reason and while it does produce brown gas upon the addition of strong mineral acid. When used in a sandmeyer type
reaction it is not producing the desired end result. So I am landing on maybe it's not pure enough or some impurity is messing it up. Getting my hands
on some professionally produced NaNO2 will help me eliminate a variable from my current quest.
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TheFuriousMoleFister
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Sodium Nitrite Still Available?
Hi
I was wondering if you still have sodium Nitrite available? I have tried my hand at synthesizing it using both the sodium metabisulfite reaction and
as well as the graphite+NaNO3+CaOH reason and while it does produce brown gas upon the addition of strong mineral acid. When used in a sandmeyer type
reaction it is not producing the desired end result. So I am landing on maybe it's not pure enough or some impurity is messing it up. Getting my hands
on some professionally produced NaNO2 will help me eliminate a variable from my current quest.
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chempyre235
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If you have access to nitrate, this procedure might help.
| Quote: | Procedure:
An isolated crucible holder was made from 2 tin cans, one 1 liter tin can, and a 620 ml tin can. The two cans were cut in half to reduce the height
and the smaller can placed into the larger can. The space between the cans was stuffed with glasswool to provide isolation. Then, four holes were
drilled 3 cm from the bottom and iron wire was then inserted through the holes in the can to provide support for the crucible. A small stainless steel
grate was then put on top of the iron wire to make a flat surface for the crucible to stand on (Photo 163). A small 75 ml porcelain crucible was put
inside the isolated crucible holder. The crucible was small enough to allow a 1.5 cm spacing from the edges, through which the exhaust gasses of the
burner can escape, and allows even heating (Photo 164). The whole assembly was put on top of a 0.8 kW butane gas burner, and 3 g potassium nitrate
added to the crucible (Photo 164,165, Note 1). The burner was lit and put on lowest setting, to prevent the porcelain crucible from cracking due to
thermal shock. Over the course of about 10 minutes, the burner flame was gradually increased. When the potassium nitrate was molten, 3 gram of copper
powder was slowly added, while stirring the melt with a thin stainless steel spatula (Photo 165,166, Note 1). Upon further heating to about 450°C,
the copper powder slowly started to become black in colour due to the formation of copper(II)oxide (Photo 167). The mixture was stirred occasionally
and strongly heated to about 520°C, as measured by an infrared thermometer. After 45 minutes of heating and stirring, the heating was gradually
lowered, upon which the potassium nitrite crystallized as long visible dendrites (Photo 168).
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This procedure is courtesy of Theodore Curtius. I'd just post the whole file, but the attachment is too large (10.4MB).
"However beautiful the strategy, you should occasionally look at the results." -Winston Churchill
"I weep at the sight of flaming acetic anhydride." -@Madscientist
"...the elements shall melt with fervent heat..." -2 Peter 3:10
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TheFuriousMoleFister
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Very Interesting! I will definitely give this a try, and let you know the results. Any ideas on the purity and yield?
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chempyre235
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The whole article can be found here.
"However beautiful the strategy, you should occasionally look at the results." -Winston Churchill
"I weep at the sight of flaming acetic anhydride." -@Madscientist
"...the elements shall melt with fervent heat..." -2 Peter 3:10
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Dr.Bob
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Bought a few more items from Texium to finish a few kits for people. As before, the items were well wrapped and shipped fast. He is a great
resource for glassware and chemicals.
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