Questions regarding chemical and lab safety. This includes questions about proper lab procedure, safe chemical handling, and such.

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4
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2answers
29 views

NaClO Concentration

In my previous occupation the usage of bleach--$NaClO$--I found was quite staggering, and based off of the health issues that I and other coworkers were having, I wanted to see how close we were ...
4
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0answers
24 views

What reaction is happening when a lithium polymer battery “is on fire”

When something goes wrong with a lithium polymer battery (as are commonly used to power electric models and robots), and it "catches fire", what is actually happening? What gas or gasses are being ...
4
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0answers
24 views

How to store methanol

We will be buying methanol by a about 200 liters at a time, I was wondering what I should consider when storing it. So far I know that it should be in the shade earthed with a copper stake in a ...
4
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2answers
320 views

Learning about explosives

I was wondering why temperature regulation is an important factor in producing explosives. I know many are exothermic reactions but what would happen if you did not use an ice bath and allow the ...
0
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1answer
44 views

How it is possible to make Aqua Regia in the lab?

How to make "Aqua Regia" in the lab conditions? Which lab equipment must be used?
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0answers
16 views

how to calculate the gas volume per purge when I change the cylinder?

I have some gas cylinders in a gas cabinet. Every time I change the cylinder, I use N2(100%v/v, 60L/min) to purge the residue gas in the pipe to a local scrubber. I want to know how many gases I ...
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0answers
30 views

Do ethanol and phenylethanol share the same properties?

I was hoping to know whether or not ethanol and phenylethanol share the same properties, i.e. do they both cause intoxication or does the phenyl group change the characteristics of the phenylethanol?
2
votes
1answer
29 views

Hydrogenation at atmospheric pressure in amateur environment

I was planning on doing some small scale hydrogenation practicals at atmospheric pressure (probably from Vogel) and ran into a couple of questions. I will be using the "balloon method" (described in ...
2
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0answers
18 views

At what scenario will a LCD monitor that used mercury inside their lamp be harmful

Small amount of mercury and/or mercury vapors is harmful to human as it can cause damage to vital organs such as brain, heart and so on. However, there are many electronic devices such as LCD monitor ...
4
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1answer
40 views

How to remove a stuck stopper from a flask

I had a question about how about how to remove a stopper that has been stuck in the neck of a 100 mL round bottom flask since I forgot to wipe the neck of the flask. A salt was formed in the 100 mL ...
12
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2answers
107 views

Safety in handling of concentrated ammonium fluoride

I recently saw a protocol for extracting organic materials that are bound in the silica matrix formed by diatoms. The extraction protocol used 10 molar ammonium fluoride ($\ce{NH4F}$). I briefly ...
0
votes
1answer
49 views

Could PNP (Silicon) transistor be toxic when exposed to air\light?

The story goes as follow: While I was in the electronic room I got bored and crushed a PNP transistor (Model CDIL 2N2907) using a rotating pipe jaws just like in the picture bellow. Now, it took me ...
2
votes
2answers
67 views

What stopper will stop HCl fumes?

The local hardware stores actually sell chemicals in recycled beer bottles with plastic stoppers as lids. The bottle of hydrochloric acid I bought is clearly losing gas to diffusion through the ...
3
votes
1answer
20 views

Testing for the presence of Hexamethylenetetramine / Formaldehyde

I read in Russian popular articles that it is allowed to preserve herring/fish with Hexamethylenetetramine in Europe. Since Soviet times, I like to buy salty herring and marinade it with Vinegar. The ...
3
votes
1answer
62 views

Mimic a volcano eruption with household chemicals?

How can one mimic a volcano eruption using household chemicals safely? We've tried it in a testing tube with baking soda and vinegar. This wasn't quite as impressive as expected. On the web we've ...
3
votes
1answer
37 views

What safety measures should I take when operating a backyard aluminum furnace

I have made a DIY furnaces out of cement. Before I do any smelting, I would just like to take any suggestions in regards to any safety measures I should take. I plan to only melt aluminum cans and ...
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1answer
53 views

Hydrogen can be stored? [closed]

Please tell about the hydrogen gas storage and the pressure created in tank. what is the calorific value of hydrogen gas when it is burnt?
2
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2answers
80 views

Methanol skin exposure serious or not? [closed]

I have just minutes ago been splashed with industrial grade methanol. It seemed like a small amount (1-3mL) on my skin. I already washed the affected area thoroughly with soap and water. Online I've ...
3
votes
2answers
67 views

What kind of fire extinguisher for chemistry at home?

The are various types of fire extinguishers. They can be based on water foam dry powder carbon dioxide wet chemicals halon etc. Suppose one is learning chemistry at home. What type of fire ...
4
votes
1answer
199 views

Is it possible to make metal fulminates?

Is it possible to make fulminates such as: magnesium fulminate, copper fulminate, etc. by the metal + $\ce{HNO3}$ + $\ce{EtOH}$ reaction?
9
votes
1answer
104 views

Organizing my “chemical” cabinet

I'm reorganizing my garage (I do metalworking and some machining), and now I have an empty white cabinet that I'd like to dedicate to chemical stuff. I'm not a chemist, and I don't have the typical ...
1
vote
1answer
41 views

Would nicotine @ 27g per 1.5ml be lethal? [closed]

Before giving up smoking I looked at ecigs and found that spillage on skin or ingestion could be fatal. Would a cartridge that holds 1.5-2ml of liquid at 27mg (1.8 v/v) be 27mg per drop or for the ...
3
votes
2answers
45 views

Soil organic carbon digestion methods - safety

I have several ground up soil samples that I need to get fractions from. The fractions are based on the Century Soil Model. Briefly, the fractions relate to the approximate time frame it takes for an ...
3
votes
1answer
44 views

How is the process of creating PVC fabrics harmful for the environment?

I often hear that the production process for PVC fabrics (such as those used in Gucci and Versace handbags) is very harmful to the environment. What part of the process is harmful and can this be ...
8
votes
2answers
79 views

Practical safety of storing potassium

Potassium ($\ce{K}$) seems to be the transitional alkali metal in terms of safety. Lighter than $\ce{K}$ and we can store under oil with no worries. Heavier than $\ce{K}$ and only ampules will work. ...
3
votes
1answer
68 views

what would happen if you got a full package of wet silica gel on your hand after it tore open? [closed]

I accidently opened a bag of silica gel and got it on my hand what will happen to my hand because now it kinda feels weird.
1
vote
1answer
40 views

How effective is a level A hazmat suit for immersion in deadly substances?

I know that level A type hazmat suits can protect against minor splashes, but could somebody in one survive without harm after complete immersion for a few minutes in deadly chemicals such as Sodium ...
5
votes
1answer
75 views

Why did the salt on the skin of my turkey react with the tin foil it was touching?

I sprinkled salt on my turkey skin and left it to dry out over night. It was covered with aluminum foil. The next morning the aluminum foil had holes 'burnt' in it and the turkey skin turned silver ...
3
votes
1answer
58 views

Is 1000ml of 'hot-ice' solution dangerous?

So I was trying out the sodium acetate trihydrate 'hot ice' experiment, and my 300ml test worked great. So, naturally, more is better right? (cringe) Now I have a 1000ml in a pyrex beaker cooling ...
4
votes
1answer
313 views

Do chemicals have an expiry date?

A bonus question would be, if so, why? Is it because it decomposes and hence the expiry date is calculated out?
4
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0answers
43 views

Cleaning up equipment contaminated with ethidium bromide?

I want to clean up some old equipment that was used to visualize nucleic acids with ethidium bromide. It's a UV table, built from glass and metal (stainless steel, I assume). Ethidium bromide is ...
4
votes
2answers
89 views

How ‘lively’ would this ‘health’ potion be?

I’ve stumbled across a rather peculiar recipe for a allegedly ‘health’ potion in a computer game, composed of an unspecified amount of each of the following: rust (iron oxide) saltpetre (potassium ...
32
votes
6answers
7k views

Do all salts taste salty?

Recently, I am learning the production of soluble and insoluble salts. My friend and I have done this experiment at the school lab. However, we want to taste them to see whether they are salty are ...
3
votes
1answer
48 views

Is there a way to contain fluorine gas for long term so that it can be visually observed?

Bromine, chlorine and iodine can all be sealed in a glass container for display without the elements reacting with the glass. But if you try to seal fluorine in glass I believe it will react and fog ...
2
votes
3answers
116 views

What are the dangers of handling 0.12N sulfuric acid?

I'm handling 0.12N of sulfuric acid for a science experiment that I am carrying out for a school project. I hear about all these terrible effects if it's ingested, inhaled, or gets in contact in skin. ...
2
votes
1answer
39 views

How effective is sulfur in detecting mercury vapors

I've read that powdered elemental sulfur will react to the presence of mercury vapor in the air creating red mercury sulfide, and that an open container of sulfur can be used as a means to verify ...
0
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1answer
47 views

Will lye damage vinyl pool liners?

I have a nutty neighbor that said someone told them to put liquid lye into their above ground pool. I said it would eat away the lining, their answer was to only use a little bit.
3
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2answers
360 views

Precautions and tips for Qualitative Inorganic Analysis of Coins

I'm a highschool student and as part of an investigatory project, I have decided to analyse which metals are present in our everyday coins. I chose this because in my previous academic year, I had ...
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votes
1answer
84 views

How to change color of urine safely? [closed]

I am trying to find a SAFE way to change the colour of my urine, from what I have read online, Methylene Blue is relatively safe, and will change urine to blue or green. Is it safe? Can I put this in ...
0
votes
5answers
115 views

Safe drying agents for drying machine

When I was milling NaOH for some purpose, I noticed that the powder is incredibly hygroscopic. Because I have problems with drying certain chemicals safely (without extensive heating), I thought this ...
1
vote
1answer
23 views

What would chemistry seniors like to hear about industrial hygiene?

I have a master degree in physical chemistry with close to 10 years experience as a chromatographer in pharma. About two years ago I made a career change into industrial hygiene. Right now I am ...
2
votes
3answers
120 views

Why did roasting of CuSO4*5H2O hurt my nose?

I want to use copper(II) sulfate as rocket propellant additive in hope that it will alter the flame colour. Because water is not welcome in rocket fuel, I decided to dehydrate the crystals. First I ...
1
vote
1answer
35 views

About electricity and liquid products

This may sound weird but could one 'zap' some liquid like milk with electricity of a certain voltage for a 'few' seconds hoping to kill any bacteria in it? I know some people suggested some type of ...
3
votes
1answer
213 views

What is the liquid in Mathmos lava lamps?

How can I identify the liquid in Mathmos lava lamps? I have two of them with broken caps, I need to get rid of them. Can I flush the stuff down the toilet? It smells funny.
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0answers
77 views

Can I use piranha solution to clean copper out of impurities?

I have some old pieces of wire. Since I want to use copper in homemade fireworks, I'm trying to gather it from the wires. I could buy it, however harvesting is much more fun. Sulphuric acid doesn't ...
2
votes
3answers
132 views

Harmless & pungent volatile liquid for use in a stage show

If for some stage play/trick we would like to create some surprising effect in which something with a pungent odor has been released, but at the same time need to ensure that thing be absolutely safe ...
5
votes
3answers
214 views

Are radioactive isotopes of silver dangerous?

I know we all think of things like uranium as being radioactive in the nasty radiation poisoning sort of way. But do elements like silver have similar effects in their radioactive isotopes? I'm an ...
2
votes
1answer
86 views

How does potassium nitrate work as an oxidiser?

Potassium nitrate is very popular compound in pyrotechnics, used as an oxidiser. It can be mixed with sugar to make a "rocket candy", with coal and sulphur to form black powder. You can stick it on ...
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0answers
74 views

Does potassium nitrate + sugar solution degrade?

I have created a solution of $\ce{KNO3}$ and table sugar in order to create fuse from hemp rope. I wet the rope in the solution and let it dry - I repeat this process several times. It works and ...
4
votes
2answers
371 views

How to interpret the MSDS warning?

Just a quick question; I was looking up the MSDS for o-Toluic Acid for an experiment when I came across this in the "Hazards Identification" section. ...