Questions tagged [safety]
Questions regarding chemical and lab safety. This includes questions about proper lab procedure, safe chemical handling, and such.
539 questions
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How does DMSO facilitate transdermal toxicity of sodium azide, and what are the key solubility, compatibility, and permeation kinetics involved? [closed]
Background
DMSO is a skin penetration enhancer. Sodium azide (NaN₃) is toxic. When mixed, DMSO can carry azide through skin without chemical change. I want to understand the hazards.
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How does one decompose hydrogen peroxide in a nitric acid solution so that it can be disposed of with out generating oxygen gas later?
I am removing high phosphorous (5~10%) nickel electroless plating from alumina circuit boards using 125 ml concentrated nitric acid to 250 ml water and 60 ml 35% hydrogen peroxide, generally following ...
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Reacting calcium with acetic acid - safe to conduct in classroom environment?
I am embarrassed to ask this on such technical site, but I decided safety first! I know that Calcium is reactive with acids and water but would it be safe to mix a small amount of calcium and acetic ...
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What is the exact definition of a pyrophoric material?
Does a pyrophoric material require both oxygen and water to be present for the rapid combustion to occur, or is pyrophoric used as the umbrella term for anything that reacts with either oxygen or ...
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Is it possible to inadvertently make methanol?
In the process of making fruit wine or vodka at home, is it possible to produce dangerous levels of methanol in the drink?
Specifically not because of tainted produce or additives but by incorrect ...
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What causes cancer when burned? [closed]
Core Question
What chemicals tend to cause cancer when burned in burn pits, and how do you instead safely dispose of them?
Backstory
One of the things the US military sometimes does on forward ...
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How do I safely store used NaOH? [duplicate]
I am not a chemist but I need 8M NaOH for research and am confused about how to safely store it after use. I understand that the best way to store any chemical is in its original container, but I will ...
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Are there any two foods or edible substances that when combined in typical cooking, become dangerous (or not-food)? [closed]
I am curious whether there exist combinations of foods or otherwise edible substances that when combined through typical cooking methods or preparations, render the mixture dangerous or otherwise no ...
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Is it safe to dissolve alumina in the presence of PbS (galenite) powder?
I am planning an experiment that involves mixing powdered $\ce{PbS}$ with $\ce{Al(OH)3, Al2O3}$ . The mixture is divided into two parts: one is supposed to be dissolved into acidic aqueous solution (...
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Concerned about evaporated moisture containing cobalt (II) chloride
I’m using blue/pink silica gel desiccant beads that contain cobalt (II) chloride. I placed 75g in a microwave oven using its defrost setting. After 25 minutes all pink-saturated beads turned blue. The ...
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Is it always safe to increase preasure using PTFE tape for alchohol storage?
In terms of isopropyl and ethanol storage and safety. The machine being used is an Elegoo wash and cure machine.
I saw an example of ether being used on rats within a lab cause an explosion where a ...
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How safe is it heating a dry glass flask?
I’m planning to purify caffeine by sublimation. The most common method appears to be: placing the crude product into a filter flask, securing a test tube on the neck with a vacuum adapter, applying a ...
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Can we revers the process of plastics to fuel
I am a 10th grade student who is trying to convert plastics into fuel.
My question is that when we can make plastic from oil/fuel then can we revers the process?
But we should be able to revers the ...
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Looking to identify potential chemicals with NFPA 704 rating 1-2-3-OX
As the title suggests, I'm trying to find a good method to locate potential chemicals with a fire diamond of 1-2-3-OX.
The sign was on a single large tank, so I assume it was a single substance within ...
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Risk assessment on handling sodium, lithium, magnesium, mercury and noble gases
I want to do an activity with my students where we study some basic properties of some elements of different groups. I'm concerned about some hazards with some of these elements. I work under a simple ...
