All Questions
22
questions
-1
votes
0
answers
62
views
Cooling a 100°C beaker in cold water
In my nanoparticle synthesis, I need to cool a beaker with boiling solution (50mL beaker) rapidly to arrest a reaction at a specific size of nanoparticle. Letting the hot beaker cool passively is too ...
- 154
0
votes
0
answers
87
views
Would a 0.3 micron filter be effective in blocking formaldehyde fumes produced by curing cyanoacrylate?
I’m looking into purchasing a mask that blocks particles larger than or equal to 0.3 μm in size. I’m hoping it blocks the formaldehyde fumes produced by curing cyanoacrylate.
How effective such mask ...
1
vote
1
answer
229
views
Will Sodium Polyacrylate (SAP) absorb the gas from liquid ammonia?
I'm considering using sodium polyacrylate grains to absorb spills of a relatively strong Ammonium Hydroxide solution. Will the SAP (super absorbent polymer) only absorb the water, and in effect make ...
5
votes
1
answer
2k
views
Safest way to conduct a reaction with bromine under reflux conditions
I am conducting an electrophilic aromatic bromination reaction according to literature. The substrate and intended substitution pattern do not matter, but the reported procedure requires the dropwise ...
- 68.4k
1
vote
1
answer
619
views
can i use an isobutane stove (like jetboil) or butane blowtorch with borosilicate glass?
I don't have a bunsen burner, but have a camping stove (similar to https://www.amazon.com/Stansport-183-B-Isobutane-Backpack-Stove/dp/B004EPWM5S) and a blow torch. I'd like to do some distillation ...
- 111
-4
votes
2
answers
75
views
cheap anti-fog agent!
What are some safe and widely available alternatives to specifically formulated anti-fog sprays/treatments? Specifically for use on glasses, goggles, and face shields.
- 95
2
votes
4
answers
253
views
Will ground glass joints relieve pressure non-catastrophically?
I need to heat a fluid for seven days at a time. The fluid goes in round bottom flask that is suspended in a water bath. The test fluid will decompose and generate a small amount of gas over time.
...
- 23
0
votes
0
answers
796
views
Highly concentrated NaOH solution at high temperature vs borosilicate glassware and cellulose?
I've read here on stack-exchange that NaOH will react with glass through the following reaction:
4 NaOH + SiO2 ⤑ Na4SiO4 + 2 H2O
I would like to briefly heat a highly concentrated NaOH solution to ...
- 1,097
0
votes
1
answer
1k
views
What kind of metal drums are used to store Hydrochloric Acid?
I would expect Hydrochloric Acid to be stored exclusively in glass or plastic containers, but I was surprised to find Honeywell offers it for sale in 30Kg metal drums (Link).
I think Hydrochloric ...
- 1,097
5
votes
4
answers
986
views
How can I get this glass stopper out? Need troubleshooting!
I placed a glass stopper in a $\pu{100 mL}$ round bottom flask while my solution was still warm and let it cool overnight. Now I think I created a vacuum seal and I can’t force the stopper out to ...
- 61
1
vote
1
answer
114
views
How can I safely store highly outgassing self-pressurizing chemicals?
I have a standard copper etching solution of 1 part $\pu{10M}$ $\ce{HCL}$ and 2 parts 3% $\ce{H2O2}$ (as described in numerous places online).
I previously had this stored in a tightly-sealed glass ...
- 143
-3
votes
1
answer
256
views
Creating water from hydrogen and oxygen [closed]
Assuming a scientist has two canisters: One with a liter of pure gas of hydrogen (single atoms gas), and one with half a liter of pure gas of oxygen (single atoms gas).
The scientist desires to ...
7
votes
1
answer
3k
views
Ductless fume hood for acetone?
Administration on my campus has become worried about the lack of a fume hood when using acetone in the 3D Print Club. I'm helping in the process of picking one out.
They do acetone vapor smoothing on ...
- 73
1
vote
0
answers
284
views
What is substance that has high melting point in its powder form?
In laminated glass bending process 2 glass sheet will be superposed in a furnance.The seperation powder will be interposed between layer for avoid 2 glass sheet being bound together.
I'm trying to ...
- 19
2
votes
1
answer
382
views
What is the correct way to transfer large volumes of chemicals?
I am an engineer starting a film developing and processing lab in my house for personal use. I am currently using a bathroom, and am concerned about contaminating my chemical process and the bathroom ...
