>>20389876
>>20389888
>What's with the HF?
ScienceAnon here knows that the picture depicts the Lewis structure for the molecule known as Hydrogen Fluoride, a deadly gas.
There's a CDC post about this hazardous chemical:
LINK - https://emergency.cdc.gov/agent/hydrofluoricacid/basics/facts.asp#:~:text=Hydrogen%20fluoride%20is%20a%20chemical,can%20be%20dissolved%20in%20water.
ARCHIVE - https://archive.is/KbIbV
What hydrogen fluoride is
Hydrogen fluoride is a chemical compound that contains fluorine. It can exist as a colorless gas or as a fuming liquid, or it can be dissolved in water.
When hydrogen fluoride is dissolved in water, it may be called hydrofluoric acid.
Hydrogen fluoride can be released when other fluoride-containing compounds such as ammonium fluoride are combined with water.
Where hydrogen fluoride is found and how it is used
Hydrogen fluoride is used to make refrigerants, herbicides, pharmaceuticals, high-octane gasoline, aluminum, plastics, electrical components, and fluorescent light bulbs. Sixty percent of the hydrogen fluoride used in manufacturing is for processes to make refrigerants.
Hydrogen fluoride is also used for etching glass and metal.
How you could be exposed to hydrogen fluoride
In a natural disaster, you could be exposed to high levels of hydrogen fluoride when storage facilities or containers are damaged and the chemical is released. This release could occur at an industrial site or even a retail location.
You could be exposed to hydrogen fluoride if it is used as a chemical terrorism agent.
If you work in an occupation that uses hydrogen fluoride, you may be exposed to this chemical in the workplace.
You may be exposed to hydrogen fluoride as part of a hobby.
How hydrogen fluoride works
Hydrogen fluoride goes easily and quickly through the skin and into the tissues in the body. There it damages the cells and causes them to not work properly.
The seriousness of poisoning caused by hydrogen fluoride depends on the amount, route, and length of time of exposure, as well as the age and preexisting medical condition of the person exposed.
Breathing hydrogen fluoride can damage lung tissue and cause swelling and fluid accumulation in the lungs (pulmonary edema).
Skin contact with hydrogen fluoride may cause severe burns that develop after several hours and form skin ulcers.
Immediate signs and symptoms of exposure to hydrogen fluoride
Swallowing only a small amount of highly concentrated hydrogen fluoride will affect major internal organs and may be fatal.
Hydrogen fluoride gas, even at low levels, can irritate the eyes, nose, and respiratory tract.
Breathing in hydrogen fluoride at high levels or in combination with skin contact can cause death from an irregular heartbeat or from fluid buildup in the lungs.
Even small splashes of high-concentration hydrogen fluoride products on the skin can be fatal. Skin contact with hydrogen fluoride may not cause immediate pain or visible skin damage(signs of exposure).
Often, patients exposed to low concentrations of hydrogen fluoride on the skin do not show effects or experience pain immediately. And, severe pain at the exposure site may be the only symptom for several hours. Visible damage may not appear until 12 to 24 hours after the exposure.
Depending on the concentration of the chemical and the length of time of exposure, skin contact with hydrogen fluoride may cause severe pain at the point of contact; a rash; and deep, slow-healing burns. Severe pain can occur even if no burns can be seen.
Showing these signs and symptoms does not necessarily mean that a person has been exposed to hydrogen fluoride. Other chemicals also can cause these effects.
Exposure to hydrogen fluoride can result in severe electrolyte problems.
. . . . see moar at link.