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Questions tagged [toxicity]

Questions on the harmful effects of various substances on the human body, or biological organisms in general.

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5 votes
1 answer
5k views

Is the flint used in disposable lighters toxic?

Especially the sparks that result when using them. I heard this from a friend and can't seem to find an answer on Google.
-2 votes
1 answer
64 views

How much harder does your body have to work to remove CO2 after you drink a soda? [closed]

CO2 is a toxic waste byproduct of our body's metabolism. No matter how its created it's still carbon dioxide and poisonous to us. Should we really be making our drinks fizzy with it? I would really ...
4 votes
0 answers
106 views

Why is cyanuric triazide environmental friendly and less toxic?

This is the first line on Wikipedia: Cyanuric triazide ($\ce{C3N12}$ or $\ce{(NCN3)3}$) is described as an environmentally friendly, low toxicity, and organic primary explosive with a detonation ...
15 votes
4 answers
3k views

Can osmium react with oxygen at room temperature?

I’m an avid collector of elements (I love shiny rocks - don’t judge). I’m looking to buy some osmium, as it’s one of the heaviest and hardest metals out there. However, people online told me to avoid ...
3 votes
1 answer
136 views

What are the uses of ethyl phthalate

The last time I went to my junior college I remember seeing huge blue colored drums labeled ethyl phthalate. So just out of curiosity I decided to check upon this compound. Wikipedia entry containes ...
-2 votes
1 answer
547 views

If I spilled mercury in a carpeted room 28 years ago will it have evaporated by now? [closed]

I made a really stupid mistake as a kid 28 years ago and spilled about one teaspoon of mercury onto a carpeted floor of a room about 12x12 feet. I’m assuming it was organic mercury only because it was ...
10 votes
4 answers
8k views

Calcium carbonate toxicity

I can't make heads or tails of the information on the net — although there seems to be plenty of it, it seems contradictory. Supposedly, calcium carbonate is used in antacids—yet there are warnings ...
-5 votes
1 answer
92 views

betamechaptoethanol smell [closed]

I am doing my masters in science and today one of our neighbors from the other lab came to heat his samples on a heating pad. the samples were in small tubes which contained Betamechaptoethanol, when ...
3 votes
1 answer
635 views

Peltier Bismuth-Telluride toxicity

From what I understand, the working agent inside a peltier cooler is Bismuth-Telluride. I've read a toxicity data-sheet regarding Bismuth-Telluride here. If I were to use a peltier cooler inside a ...
1 vote
0 answers
173 views

Do we understand why Dimethyl Mercury is so toxic?

I have read extensively about Prof. Wetterhahn and in the Wikipedia Wetterhahn mercury poisoning article it said her blood mercury (I do not know if the test measures mercury or the compound) was 4000 ...
0 votes
0 answers
194 views

Are there any real dangers to using lead fishing sinkers to hold a shower curtain in place?

I am hoping someone can help me consider if there are any factors that would make the use of lead fishing sinkers such as these in the shower risky enough to stop doing it. Specifically, they are ...
-5 votes
2 answers
67 views

Can you infer toxicity of an ionic compound based on the toxicity of its ions in other configurations?

Suppose I have two ionic compounds: "NaY" and "XCl". If these were both 'safe' to eat, would it be true that ...
10 votes
2 answers
15k views

Is the Hollywood portrayal of the effects of ingesting HCN correct?

In the 2012 movie Skyfall, the antagonist Raoul Silva rues that the "hydrogen cyanide" he took ("Do you know what it does to you, hydrogen cyanide?") didn't kill him, leaving him horribly disfigured ...
-1 votes
2 answers
54 views

Relationship between grams of root and content in a tea

When we make a tea from a some herb, what exactly is the relation between the weight of the herb/root stepped in hot water and how many grams/milligrams are in the tea. For context and giving a ...
3 votes
1 answer
10k views

Understanding grades of steel for cookware. 18/10 vs 18/8

I am looking for a stainless steel cookware and while researching on the best kind of stainless steel cookware, I came across this comment on youtube: Actually 18/10 steel is better and costlier. You'...
1 vote
0 answers
110 views

Could a beach have green or blue sand due to a nearby copper deposit? How poisonous would such a beach be? [closed]

I am in the midst of a world building project and am wondering about green sand from copper oxide/patina material. The material could either be washed into the water from a nearby land deposit or be ...
-2 votes
1 answer
333 views

How fast does potassium hydroxide turn into potassium carbonate, in the case of leaked AA or AAA batteries? [closed]

When batteries start to leak, the highly toxic potassium hydroxide comes out, but it reacts with the carbon dioxide in the air and turn into the less toxic potassium carbonate salt. I'm wondering how ...
54 votes
6 answers
83k views

Is there any substance that's a 4-4-4 on the NFPA diamond?

A lot of the organometallics are rather... interesting compounds to work with. The most famous (among those who care, anyway) is tert-butyllithium or t-BuLi. It is the textbook example of a pyrophoric ...
0 votes
5 answers
4k views

Why n-butanol is not used as a safer alternative to ethanol in the alcoholic beverages?

The LD50 of n-butanol adjusted for its intoxicating potency is about 1.5 times that of ethanol. This would mean to me that n-butanol is therefore 50 % safer than ethanol. Why is it not used to replace ...
1 vote
1 answer
492 views

Purpose of measuring chloroform soluble extractives

I noticed that tests such as the FDA ones are measuring "chloroform soluble extractives". I understand that chloroform is toxic and its effect to human if exposed to it. But does that mean ...
4 votes
1 answer
637 views

How does selenium protect against mercury poisoning?

I have read that it is not essential to avoid fish with mercury in them if they also have a correspondingly high level of selenium because mercury poisoning is primarily primarily the result of ...
-1 votes
1 answer
238 views

Would the addition of Citric and Phosphoric Acid or Potassium Carbonate to agricultural water supply result in health/safety concerns?

I am doing a small greenhouse project for fun. As a side benefit of this project, I was hoping to consume the food that I will be producing. I have been checking all of the products that I will be ...
-4 votes
1 answer
181 views

Why are tri-organotin chloride compounds so dangerous? [closed]

Organotin compounds are compounds with the tin-carbon bond and some of them(specifically the tri-organo chloride ones) are as toxic as hydrogen cyanide. Why is this though as I don't really know some ...
8 votes
1 answer
19k views

Does melting HDPE plastic produce toxic fumes? (melting, not burning)

● The question isn't about burning HDPE but melting it at the proper temperature. (At 120 to 180°C depending on it's density, it becomes gooey. According to the source below the "extrusion" ...
1 vote
1 answer
61 views

What replaced lead-based pigments? [closed]

In the 1960s and before, even black and white letters had some lead from the actual metallic letters used by typesetters—some rubbed off. Same thing with books printed before 1970 or so and libraries ...
3 votes
2 answers
658 views

Producing hydrogen sulfide—difficult to do much?

When I was young (nearly sixty years ago), my "chemistry set" taught me how to heat sulfur and candle wax to stink up the house.  It had no warning that hydrogen sulfide is toxic and ...
2 votes
1 answer
149 views

How does this coin-and-strike-paper trick work (and is it safe)?

When I was a kid I remember a thing an adult showed me where you would take a piece of strike paper from a matchbox, rest it on a "copper" coin (I have no idea what these coins are made of), ...
2 votes
1 answer
1k views

What are the safest non-toxic elements I can own? [closed]

As in a recent question, I mentioned I collect elements. My collection already has quite a few elements and a rare alloy (I have silicon, molybdenum, tungsten, gold, platinum, silver, copper, ...
-3 votes
1 answer
205 views

Why is Denaturated alcohol made poisonous? [closed]

I understand the need to denaturate alcohol, as to have a material that can be used for non-food products without the heavy alcohol beverage tax. So, adding a foul tasting bitter substance like ...
-4 votes
1 answer
4k views

I mix table salt and baking soda with water to make mouth rinse, and leave them for several days. It started to form precipitation, and a bad odor [closed]

I mixed 2 spoons of baking soda with 1 spoon of salt and mixed them with water (but not mixing totally) and left them for several days. At first I saw some bubble but the water was clear, but then it ...
-4 votes
1 answer
379 views

when copper oxide is dissolved in vinegar does it release copper oxide gas [closed]

i was cleaning my pennies in a bowl of vinegar and table salt and was wondering when the copper oxide on the pennies dissolves does it release copper oxide gas or a gas i should be worried about. I ...
-4 votes
1 answer
105 views

Do baking soda or vinegar reduce toxicity? [closed]

Both baking soda and vinegar can be used to remove cigarette odor from cloth and surfaces, at least temporarily. Do they reduce toxicity of the third hand cigarette smoke too or just 'hide' the smell?
0 votes
1 answer
568 views

What are chemicals that will create a similar reaction to baking soda and vinegar for my book?

I'm writing a book based on a dream I had, but after some research I can't find too much on a specific reaction I want. The main character mixes a clear liquid and yellow powder which hisses and ...
14 votes
3 answers
31k views

Is poison still poisonous after its 'expiration date'?

As we all know that, Any poison is nothing but a chemical compound. And as discussed in the question: Chemicals-do-have-an-expiry-date! So, my question is: Is poison still poisonous after its '...
4 votes
1 answer
197 views

Why are zinc shot and mossy zinc not considered toxic but zinc granules are?

In our lab we have three forms of zinc. We were initially experimenting with these three forms to optimize our application. We have "zinc shot", "mossy zinc", and "zinc ...
5 votes
2 answers
1k views

Why is osmium(VIII) oxide so toxic?

Osmium(VIII) oxide or osmium tetroxide is a volatile chemical compound with the formula of $\ce{OsO4}$. It is highly toxic for supposedly irritating mucous membranes, but I'm not too sure if it is ...
16 votes
4 answers
4k views

Is Fluorine more toxic than Chlorine?

Fluorine is more reactive than Chlorine. But does it mean that Fluorine can cause more damage to living tissues? If so, why wasn't Fluorine used in WW1 instead of Chlorine?
0 votes
4 answers
313 views

What toxic gases are emitted during the combustion of potassium ferrocyanide? [closed]

I have read that Hydrogen Cyanide is emitted if Potassium Ferricyanide is combusted, but would this be the same case for Potassium Ferrocyanide? I am preparing to perform some case hardening on steel ...
1 vote
0 answers
228 views

Why are all of the group 16 hydrides/hydrogen chalcogenides except H2O toxic? [closed]

I mean ($\ce{H2O}$) is non-toxic and is needed everyday but all of the other group 16 hydrides (hydrogen sulfide ($\ce{H2S}$), hydrogen selenide ($\ce{H2Se}$), hydrogen telluride ($\ce{H2Te}$) and ...
3 votes
0 answers
401 views

Cubic zirconia additives and toxicity

What are cubic zirconia (CZ) gemstones usually colored with? According to wikipedia the following dopants are being used: Cerium Chromium Neodymium Erbium Titanium. Chromium is quite colorful and ...
75 votes
5 answers
22k views

How do people know HCN smells like almonds?

I was told by my chemistry teacher that $\ce{HCN}$ smells like almonds. She then went on to tell a story about how some of her students tried to play a prank on her by pouring almond extract down the ...
1 vote
0 answers
51 views

Avoiding chemical reactions with carbonated alcoholic drinks

I'm making a cooling beverage dispenser for carbonated drinks. The keg remains room temperature and the beverage rises through a pipe that's coiled up inside a cooling unit filled with water or ...
3 votes
2 answers
117 views

Biological activity of the isotopes of the same element

I have a question regarding biological activity of different isotopes of the same elements, notably $\ce{^206Pb}$ and $\ce{^208Pb}$. Lead is known to be toxic, such that it can replace calcium from ...
4 votes
2 answers
128 views

What is the mechanism of AChE inhibition by Onchidal?

A naturally-occuring neurotoxin, called Onchidal, produced by a species of sea slug acts as an irreversible inhibitor of acetylcholinesterase. The structure of Onchidal is presented below: How and ...
0 votes
1 answer
256 views

What compound(s) contribute to bleach's smell and are they dangerous?

Just a few hours ago, I had to deal with a mold problem on some untreated wood and was told by a hardware store worker that bleach was an effective way to deal with the problem, following up with some ...
-1 votes
0 answers
336 views

Accidentally sprayed the wrong product in my mouth [closed]

I sprayed the wrong product in my mouth the other day. It was a spray hand cleaner. Noticed the mistake right away and immediately spit it out and then rinsed my mouth. But even so, my tongue and ...
2 votes
0 answers
26 views

Chemical safety information: Where to look to find out how poisonous poisons are?

Could someone point me toward a primer on how to read the toxicity warnings on standard chemical data sheets? Or alternatively, where one should look for more precise information than is contained on ...
5 votes
1 answer
88 views

How are the toxic components in a mixture identified?

I was doing research on buckwheat sprouts (as to whether I should include them in my diet) and I came across a website that said eating too much can cause fagopyrism, which is caused by compounds ...
1 vote
0 answers
25 views

How do I understand exactly how hazardous a material is based on SDS?

I work with a lab occasionally and get asked often if a chemical is safe to breathe, how hazardous is it if it lands on skin, etc. For the most part, I'll try to go to an SDS and look it up. The ...
2 votes
0 answers
31 views

How do structural differences between neostigmine and TL-599 contribute to differences in toxicity?

Stevens and Beutel studied the activity of several carbamate anticholinesterases. Among other things, they found that the (4-trimethylammonio)phenyl dimethylcarbamate iodide (The para-analog of ...

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