All Questions
11
questions
-3
votes
1
answer
48
views
Possible Plumbing Acid through Leaky Pipe in Floating Ceiling, How to Test/Clean?
So I had a plumber in the other day, and I don't know if he used acid drain cleaner or not. The pipe where the possible leak is, is over some drop ceiling (vinyl or expanded polystyrene).
Before I go ...
1
vote
0
answers
83
views
Solvent + Photopolymer Waste Disposal
I have a 3L jug of SLA printer-related waste that's been sitting under my desk for a while now and I'd really like to finally figure out how to get rid of it. It contains:
Ethanol (primarily) and ...
- 1,172
0
votes
1
answer
581
views
Phosphoric acid spill cleanup
While working with some rust converter (MSDS, ~20% phosphoric acid by weight), a sequence of events that would make Rube Goldberg proud led to me spilling about 500mL of it all over the place. Yes I ...
- 1,172
2
votes
1
answer
2k
views
Is it considered safe to sonicate with flammable solvents?
I use a sonicator at work in a cleaning process. It involves sonicating acetone, NMP, and IPA. We would like to move forward with other flammables as well. We currently do the work in a hood, but no ...
- 21
3
votes
1
answer
2k
views
Safely lowering bleach pH without chlorine gas?
According to Eurekalert, by lowering the pH of household bleach (e.g., by adding vinegar or citric acid), we can increase $\text{[HOCl]}$ and consequently greatly improve the disinfecting capabilities ...
- 1,556
4
votes
2
answers
4k
views
Dangers of expired bleach?
I have some unopened Clorox bleach bought over a year ago (at $8.25~\%\ \ce{NaOCl}$) and read on Wikipedia that bleach naturally decomposes according to
$$\ce{3 NaOCl (aq) -> NaClO3 (aq) + 2 NaCl(...
- 1,556
22
votes
1
answer
4k
views
How can I safely handle a concentrated (fuming) nitric acid spill?
I will shortly be using $90~\%$ or higher concentration nitric acid in a home environment for the purpose of decapping ICs. I understand the corrosive dangers of nitric acid, and most of the important ...
- 331
-1
votes
1
answer
8k
views
What could happen when mixing bleach with other cleaning residue?
I have a wall covered in mold. I have used various cleaning wipes attempting to clean it, including a vinegar mixture. I now want to spray the wall with a bleach cleaner. I am concerned for fumes from ...
- 99
7
votes
4
answers
69k
views
Sulfuric acid fumes from cleaning shower drain
This morning a workman came by to my newly rented property to fix a few things, among which a slightly blocked bathtub drain.
He let some mild water run continuously and he poured down a chemical, ...
- 79
8
votes
3
answers
3k
views
How do we get rid of dangerous explosive acetone peroxide and nitroglycerine?
Imagine the police (or army or whoever's job is that) found out that some maniac placed a lot of primary explosives under a building. They have evacuated the building and deactivated the trigger.
...
- 2,518
3
votes
1
answer
6k
views
Is hydrogen peroxide safe for cleaning porcelain?
From my understanding hydrogen peroxide only reacts with bacteria in a way that it should burn them more or less.
If that is true, can I then safely use hydrogen peroxide to clean my bathroom sink ...
