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

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1answer
111 views

Can you make napalm out of gasoline and orange juice concentrate?

According to the novel Fight Club by Chuck Palahniuk: The three ways to make napalm: One, you can mix equal parts of gasoline and frozen orange juice concentrate. Two, you can mix equal parts ...
6
votes
1answer
43 views

How hazardous are peroxide-able ethers if stored properly?

This question is directed towards laboratory scientists and technicians who actually deal with ethers that can develop peroxides upon concentration (e.g. diethyl ether, THF, dioxane). I am already ...
3
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1answer
36 views

Disposing of Hazardous Waste: General

I'm doing a book for the African market and the syllabus asks for discussions on proper disposal of chemicals and waste products, particularly in the classroom setting. The authors said something ...
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0answers
55 views

Taiwan propylene explosions one week ago

Is it wrong way to use WATER to relieve the big disaster(propylene leak). What is a better way to relieve propylene leak in a street about large area? Any possible choice to prevent explosion?
5
votes
1answer
131 views

How dangerous is taking a bath in Coca Cola?

What can be the effects for the body to be immersed in Coca Cola for a while? A friend commented me that the coke is quite acidic (pH 2.5 if I recall properly), and we were guessing what could be the ...
3
votes
2answers
98 views

Mercury and 502 glue

I do some experiments with liquid mercury and I use a special bottle that was 3d printed (ABS plastic). To prevent leaking of mercury I use 502 glue layered around the bottle. I want to know, if it ...
2
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1answer
40 views

Can very dilute acids exposed to air become more concentrated as water evaporates?

If a very minute quantity spilled acid (e.g. $\ce{H2SO4}$, though the question would apply to other acids as well) is cleaned up with water (e.g. yielding a $0.0001~\mathrm{M}$ solution), and some of ...
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1answer
38 views

Are there any hazardous products that would come from mixing glass cleaner with lubricant?

Are there any known safety issues if you mix: Mr.Muscle glass cleaner GT85 spray lubricant
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2answers
58 views

Does vinegar neutralize the strongly basic compounds in cement?

I have heard that washing one's hands with vinegar is effective in neutralizing the strong bases in cement and is more effective than water. I want to know how cement burns and what bases are ...
4
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2answers
71 views

Safety when handling cyclohexylamine in non-industrial amounts

Today I was pipetting some cyclohexylamine into smaller bottles so that I don't have to use the liter flask every time I need a little bit of catalyst or plasticizer. I pipetted several 10-20 mL ...
2
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2answers
56 views

What dangerous gases could electrolysis with water and sodium carbonate produce?

My friend was very nervous when he noticed that I'm performing electrolysis in a room that we've just been residing. (it was under open window to let $\ce{H2}$ out) After a sharp argument, he made me ...
7
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1answer
94 views

Removing prenylated phenolics from clothing, shoes, and upholstery

I live in Southern California and sometimes hike in areas that can be overgrown with a plant called purple poodle-dog bush. As I found out the first time I went crashing through a stand of the stuff, ...
2
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1answer
73 views

what makes mercury vapours so harmful

I just read an experiment in which mercury has to be heated and in the same experiment there was a note saying do not inhale mercury vapours as they are very harmful I just can't get the point why ...
0
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1answer
74 views

Storing diuluted (~1M) Sulfuric acid, Hcl, NaOH in plastic PET bottles a bad idea?

Do I really need glass bottles if the acids and NaOH is so diluted? I thought plastics dont really react with acids. And I already have them in plastic bottles (probably a different kind). Thanks
3
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1answer
73 views

I heard aluminium doesn't produce fumes when burnt but the opposite happened, how?

One day I took aluminium foil(sanitary brand, don't know if you've heard it) then I casually burned it over a gas lighter then it burned and gave off Grey fumes and the foil became a dull Grey ...
-2
votes
1answer
28 views

What is the fire point of sucrose with an average particle diameter of 60 micrometres?

What is the fire point of sucrose with an average particle diameter of 60 micrometres? I can't seem to find any documentation on this, online.
2
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2answers
22 views

Skin permeability, for all chemicals or just some?

On skin permeability, according to Wikipedia: "Human skin has a low permeability; that is, most foreign substances are unable to penetrate and diffuse through the skin. Skin's outermost layer, the ...
4
votes
1answer
102 views

Solvent for copper(I) iodide, copper(I) thiocyanate, silver iodide for HTM deposition; safety for methylammonium lead iodide

I'm a student working in a high school laboratory that is looking to pursue research into perovskite cells for next year, but I have some solubility and safety questions. What would be a good solvent ...
2
votes
2answers
852 views

Drinking water out of a 24 year old Ether Bottle

I have an empty aluminum Ether bottle (Shipping name diethyl Ether) that I'd like to use as a large drinking bottle as this is thick aluminum. Is it dangerous? Here is some of the info on the bottle. ...
4
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3answers
183 views

Demountable simple fume hood

I found this build-plan recycling on the internet (I believe it was originally published in a book written by the infamous clandestine chemist Hobart Huson) which seemed interesting to me. I do not ...
4
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1answer
41 views

MacGyvered chlorine gas protection

I was watching Periodic Video's chlorine video, which discusses Chlorine's ferocity in stripping electrons whenever possible, and the professors mentioned its consequent use in WWII as a chemical ...
4
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2answers
31 views

Assessing fire hazard of compounds

Following up on a somewhat too broad question about amateur chemist safety, this will be the first to address some of the issues discussed there. I often use the NOAA MSDS database (material safety ...
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0answers
83 views

Hazardous materials handled by amateur chemists [closed]

I'm a enthusiastic and devoted amateur chemist (in disguise, I'm actually a mathematician), but lately I've been thinking to what extend it is safe to pursue my hobby. I'm after all an amateur with ...
2
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1answer
84 views

What concentration of sulfur hexafluoride is safe to inhale

I am an 8th grade science teacher doing a unit on density, and I want to inhale helium and sulfur hexafluoride as a fun demonstration. I am open to using any source to purchase from, and money is not ...
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4answers
1k views

How can I clean my lab coat?

Over the course of my studies, my lab coat has absorbed a non-negligible amount of different chemicals, some of them nasty organic polymers, some are more insoluble inorganic compounds like ...
1
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1answer
70 views

Soluble salts in Ceramics Safety Question

Some ceramicists decorate pottery using soluble salts (usually chlorides and sulfates e.g. copper chloride, cobalt sulfate) which are used individually or mixed to produce different colors. I have ...
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2answers
36 views

Carbon monoxide detection without a detector

I have just been waken up by an alarm and found out that my neighbour did something terrible with his lighter. Luckily, there was no fire, only a plenty of smoke, and our flats were hermetically ...
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3answers
104 views

Safety concerns - Heating PMMA (acrylic glass) and fluorinated polymers

I have some plastic optical fiber, which consists of a thin core of PMMA (polymethyl methacrylate), covered by a fluorinated polymer. I would like to heat a bundle of these fibers to ~130 degrees, in ...
0
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2answers
107 views

Is this reaction safe?

For my chemistry experiment, I was assigned to produce Ammonia Sulfide and test the chemical properties of the compound. From my online research, I found out that I can mix household ammonia and match ...
3
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2answers
69 views

How to treat Magnesium powder and ribbon

I am a master student of nuclear physics. Due to some measurements I'd like to make, I have to use Magnesium as a beam target. Searching through the net to see it's properties I found that it can be ...
2
votes
2answers
164 views

How can I safely carry out an electrolytic etch on stainless steel without producing relatively harmful by-products?

I propose to carry out an electrolytic etch on a stainless steel plate like so: One of electrodes must be the stainless steel plate which is being etched and the surface layer must be removed. I'm ...
6
votes
4answers
980 views

How explosive is hydrogen gas?

I want to electrolyze water to get oxygen and hydrogen. I want to mix them in a regular balloon and ignite it. How much hydrogen would you need in a 2:1 ratio with air for it to be dangerous? Is this ...
0
votes
1answer
36 views

Is there a danger in electrolyzing NaCl?

To make $\ce{NaOH}$ one could electrolyze a solution of $\ce{NaCl}$ in water ($\ce{H2O}$) It would go like this: $\ce{2H2O (l) + 2Cl^- (aq) + 2Na^+(aq) -> H2(g) + Cl2(g) + Na^+(aq) + 2OH^-(aq)}$ ...
4
votes
2answers
91 views

What is an effective experiment to demonstrate the safety of wearing leather shoes while experimenting in the chemistry lab?

Quite often (from my own experience anyway), one of the safety rules in a school (high school or university) laboratory is that the students must wear leather shoes. I like to demonstrate some of ...
2
votes
3answers
130 views

Why do some dentists claim mercury “leaks out” of amalgam fillings?

From a chemistry point of view, if dental amalgam is a compound of mercury and other metals, and compounds are elements which are chemically bonded, how would it be possible for mercury to "leak out" ...
2
votes
1answer
100 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 ...
3
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2answers
72 views

Is it possible to cut yourself on pyrite?

I am planning an RPG adventure where the characters might end up getting a large cubic lump of "gold", which in reality, as you might have guessed, is in fact pyrite. I also wanted to plan for the ...
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3answers
99 views

Is it safe to mix potassium alum powder with magnesium oil (made from water and magnesium flakes)?

Will mixing these two together cause a reaction of any sort? If so, is it safe and is there an order in which one should be added to the other?
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0answers
25 views

Can you heat water with chemical additives? Would it remain safe to drink? [duplicate]

I've been wondering, is there some chemical that reacts with water, causes heat but isn't toxic?
0
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1answer
149 views

Will a Galileo's Thermometer containing liquid paraffin explode in my car if the temperature is above 35 degrees Celsius?

I'm driving from Sydney to Melbourne (approximately 12 hours trip) and I'm wondering if it's safe to have this Galileo's Thermometer in my car during the trip if it's going to be a scorcher of a day. ...
4
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1answer
107 views

Is there any substance that's a 0-0-0 on the NFPA diamond?

Is there any substance that's a 0-0-0 on the NFPA diamond? Basically a perfectly safe chemical.
0
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1answer
58 views

What are the properties of various solutions at pH <2 that may cause injuries?

For example, why do some solutions not cause any injuries at pH 2 while HCl does?
0
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1answer
47 views

Safety concerns for radical halogenations of methane in sunlight?

I wanted to know about the substitution reaction of alkanes particularly interested in the reaction of methane with fluorine and chlorine.
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0answers
235 views

Perfluorobutanesulfonic acid (PFBS) Safety and Toxicity

I was wondering if anyone had any experience with PFBS or PFOS (perflurooctane sulfonic acid)? I am thinking about trying to purchase some of these fluorosurfactants in bulk in order to (hopefully) ...
1
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1answer
237 views

Storing chloroform

I'm going to be aliquoting out ethanol-stabilized chloroform into smaller containers. It's presently in a large bottle sealed with a rubber(y) sheet so I can only draw it out with a needle. My ...
1
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1answer
59 views

How to prevent petrol from being flammable?

Is there any way to prevent petrol from being flammable without losing it's solvent properties? Preferably some affordable way that is applicable for DIY. In my case, petrol is used for bearing ...
5
votes
2answers
169 views

How to quickly cool a test tube without cracking it?

Is there a way to safely cool a heated test tube quickly without cracking it due to sudden thermal stress in the glass? One thing that I tried was blowing on it, cooling it in slightly lukewarm water ...
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vote
2answers
269 views

Why do pharmaceutical drugs have a expiration date?

Every now and then you reach into the bathroom cabinet to find that some pill or ointment you where planning to use has gone past its expiration date. I am interested whether this expiration date has ...
2
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1answer
140 views

Rotary Evaporator Cleaning

I am using a rotary evaporator ('rotovap') in my lab mainly with dichloromethane as a solvent. Usually between experiments I clean the receiving and boiling flasks with a brush using soap and water ...
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2answers
273 views

Is it dangerous to inhale the steam coming from electrolysis of salt-water solution

Is chlorine in there that accumulates (at the anode) and emerge out as chlorine gas? I was worried since I added a pinch of salt to the steamer inorder to hasten the heating of tap water when I caught ...