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

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6
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1answer
46 views

Do hard drive platters contain toxic chemicals?

So, I'm considering an Artsy Fartsy project with hard drive platters. Bring mildly aware of the world around me, I've come to the conclusion that I probably shouldn't grind up modern (or any) ...
2
votes
1answer
56 views

Is triclosan harmful?

I keep hearing about this product known as triclosan, and that it is used in sanitizing soap. And I also heard that it is harmful, and causes some sort of muscle problems. However some people aren't ...
8
votes
3answers
337 views

How much ozone is produced by ionization of air and how turn ozone into oxygen

I want to make a plasma speaker. I'm worried about the amount of ozone being produced by the ionization of the air and it possibly not being a safe amount. Even if it doesn't produce a dangerous ...
4
votes
2answers
35 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 ...
2
votes
0answers
27 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
votes
1answer
54 views

Effect of tear gas and laughing gas together

What will happen if someone uses tear gas, such as CS $(\ce{C10H5ClN2})$ and laughing gas, $\ce{N2O}$, in auditorium? Means will people start laughing and crying together? Or there will be other ...
0
votes
1answer
50 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
1answer
46 views

Can someone induce cancer in another person

Is it possible to poison someone's food on a daily basis in order to give them cancer? The thing here is that i'm worried someone at my workplace might be poisoning other people's water (each ...
9
votes
2answers
5k views

How to I extract cyanide from apple seeds?

I'm working on a crime story about cyanide poisoning from apple seeds. I just would like to have an idea on what kind of processes and extraction techniques that might be involved in getting cyanide ...
10
votes
7answers
1k views

Are there any good examples of commonly ingested molecules that contain particular toxic individual elements?

In the house on my own and an article popped up on my feed with the following statement: While the Government has insisted the chemical is safe, cadmium is recognised as a cause of lung cancer ...
7
votes
1answer
74 views

Is Acrylamide carcinogenic? Why?

Recently concerned with health effects by common chemicals existent in food I've been rather busy reading article after article; and just an interesting one came around: Acrylamide (or acrylic ...
0
votes
1answer
43 views

Aspartame poisoning: Can it modify aminoacids?

I just accidentally closed a webpage (and did not find it later) which described that somehow, Aspartame poisoning victims had faults in the vital proteins of their body due to the reaction of ...
16
votes
3answers
1k views

Why is methanol toxic?

There are two points of view for the answer of this question: The biological view, the only one that I faced during my research, states that since it can trigger perilous conditions like metabolic ...
3
votes
0answers
50 views

Is Sweetwater, Missouri, named due to water contamination with lead compounds?

Sweetwater Missouri is known for it's mineral resources, particularly rich lead sulphide (galena) deposits. I was curious to find the origin of the name 'Sweetwater' and if it had any connection with ...
5
votes
2answers
94 views

Why is mercury much more toxic when inhaled than injected?

Following wikipedia: Cases of systemic toxicity from accidental swallowing are rare, and attempted suicide via intravenous injection does not appear to result in systemic toxicity,[1] though it is ...
1
vote
1answer
69 views

is there a lead compound that crosses the blood-brain barrier when ingested?

for example mercury oxide has neurotoxic properties but isn't organic so, it isn't soluble in lipids and so doesn't cross the blood brain barrier when ingested, however, methylmercury chloride is ...
2
votes
1answer
1k views

Why does my coffee creamer have titanium dioxide in it and is it safe?

From the manufacturers website of a coconut french vanilla coffee creamer: Ingredients: ORGANIC COCONUT MILK (WATER, ORGANIC COCONUT CREAM), DRIED CANE SYRUP, NATURAL FLAVORS, COLORED WITH ...
2
votes
1answer
60 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
votes
0answers
48 views

Is it dangerous to live near lead? [duplicate]

Several month ago, I soundproofed the door of my room with two sheets of lead. Can it be dangerous to live with them for many years? Can lead "decay" in some way and be inhaled? (and what happen when ...
2
votes
3answers
141 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 ...
3
votes
1answer
36 views

Does hydroxytyrosol have the same neurotoxicity potential as dopamine?

It has the catechol group, and it's the oxidation of the catechol group that makes dopamine produce reactive oxygen species (ROS). Hydroxytyrosol isn't that different from dopamine (the distal N ...
4
votes
4answers
112 views

What is the molecular mechanism of ammonia's toxicity?

How does it damage proteins/lipids/DNA? There seems to be surprisingly little literature on its toxicity.
5
votes
1answer
158 views

Toxicity of a sheet of lead?

I just went camping and someone brought a game from Australia. There was a wooden box with the top made of a thin, soft sheet of lead with a whole in it. The participants then throw coins at the box, ...
4
votes
1answer
128 views

Reduce chlorine gas

I have a simple electrolysis setup which uses aqueous sodium chloride as electrolyte. The problem is that, the setup makes tons of chlorine gas along with hydrogen (I only want hydrogen). I didn't ...
2
votes
0answers
32 views

What sort of lab can determine PAH concentration in a soil or charcoal sample? How difficult is it to do?

Non-chemist here. I'm curious how difficult it is to determine concentration of PAH in a sample of soil or powdered charcoal, or a sample of the two mixed together. What would be involved in doing ...
4
votes
1answer
93 views

Why do different alcohols have different effects on the brain?

I've been trying to understand why different alcohols have different effects on the brain. Methanol is obviously poisonous, apparently because it's converted to formic acid. Because the body seems ...
1
vote
1answer
40 views

Instructions for handling toxic liquids

i would like to know the precautions taken when handling liquids like Trichloroethylene , Tetrachloroethylene ,Dichlormethan ,Mercury. Of the list above which is most toxic.I have seen people handle ...
8
votes
1answer
182 views

How long burned tobacco smoke remain toxic?

It's hard to evaluate Environmental Tobacco Smoke lifecycle, it can certainly react, be absorbed by organisms, or be diluted in rain, and be emitted again from the ground. But in the end, I'm ...
1
vote
2answers
98 views

what is a clear liquid that attacks cellular respiration

I'm doing a biology assignment and need to find out a clear liquid that attacks cellular respiration. It needs to be toxic and either absorbed through the skin or inhaled.
4
votes
1answer
94 views

Chemical Spill in Charleston, West Virginia

I live in Charleston, WV. On 1/9/2014 we were told not to use our tap water for anything other than flushing the toilet after a storage facility leaked over 7,400 gallons of 4-methylcyclohexane ...
1
vote
2answers
164 views

Does my data show quadratic regression in a calibration curve?

This data was taken for my science fair project, and I would like to know the relationship between spectrophotometer absorbance and cell density (taken manually) of algae after a toxicity test. The ...
9
votes
2answers
369 views

At what amount is digesting soap unhealthy?

Several of my friends, when they do the dishes manually, do not rinse the dishes after cleaning but merely dip them in the dishwater and then dry them (using a towel or a dish rack). I myself on the ...
0
votes
0answers
406 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
vote
1answer
140 views

How toxic is disilanol?

Silicon has been known to form analogues of organic compounds. For example, silicon with 4 hydrogen atoms forms silane as opposed to methane. This continues up the alkane list, with disilane for ...
1
vote
1answer
176 views

How can silver work as a disinfectant in a bathtub if precipitates in the presence of chloride?

I use a silver based disinfectant in my hot tub. It is in the form of silver nitrate beads. There is chlorine in the tub that I presume becomes chloride ion. Why doesn't the silver form a precipitate ...
3
votes
1answer
126 views

What is the best way to detect the presence of tear gas?

I realise that tear gas can be several different things (Pepper spray / CS Gas / CR gas, PAVA, etc) Is there a good way to detect some or any of these in the air? Ideally using an electronic sensor ...
2
votes
1answer
208 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: ...
9
votes
1answer
1k views

Why are the halogens good disinfectants?

I've been searching around the internet for a while and I know that Chlorine, Bromine and Iodine are used as disinfectants. My question is, what is the property of the halogens that make them ...
1
vote
1answer
861 views

Chemically Speaking, What's Bad About Inhaling Plastics?

I hear about things like dioxin, but I really don't see what's dangerous about plastics-shouldn't you be ble to just breathe it out, or pass it out of your system? How would it cause cancer?
2
votes
0answers
40 views

Aflatoxin versus Benzene, permissible levels

Alfatoxin and benzene are carconogenic, and this is the major concern for low, chronic doses. They are regulated to the few parts per billion level in food. However, according to ...
17
votes
3answers
4k 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 ...
2
votes
1answer
121 views

Impact of detergent on internal living tissue?

There was some spirited debate between the members of my chemistry lab today about the theoretical consequences of ingesting a large amount of the detergent Triton X-100 at a 100% concentration. The ...
2
votes
1answer
304 views

Can silica gel beads cause silicosis if crushed?

Can silica gel beads (which I believe are amorphous) when crushed to dust cause silicosis?
6
votes
2answers
1k views

Is tin and tinware toxic?

I tried to find info on tin toxicity but there is not much. Wikipedia here says that it is not very poisonous; but there could be cases. My question is: is it dangerous to say have a coffee boiled ...
7
votes
2answers
368 views

Cyanogenic glycosides and HCN

I'm researching cyanide for a biology project and noted that one of the largest sources of carbohydrates in the tropics is the cassava root -- which I previously researched as a food that contains a ...
4
votes
1answer
8k views

Adulteration of turmeric with Metanil yellow

I read in the local paper that common food products like turmeric can be adulterated. It continued to specify the adulterant which they called metanil yellow. On searching on the Net, I was able to ...
7
votes
3answers
1k 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 ...
-1
votes
1answer
1k views

Is the smell coming out from a portable dehumidifier safe?

A portable dehumidifier requires the consumer to plug it into an outlet to regenerate its crystal. When the crystal is thus "regenerated", the indicator will change from pink color to its original ...
4
votes
1answer
2k views

Blue Silica Gel more harmful than the orange ones?

I am currently searching for a portable dehumidifier but notice that most of them come with a indicator that actually using the Blue Silica Gel, which I believe that it may contain Cobalt Chloride. ...
5
votes
1answer
291 views

Mercury, amalgams and mercury compounds [closed]

Mercury is toxic. It forms amalgams and inorganic mercury compounds/salts are available. My question is on toxicity. I am interested in its toxicity, not the mode of action (as it will be part of ...