divendres, 17 d’abril de 2009
El meu nou amic, no m'ha alegrat precisament el dia saber que hi treballaré... / My new friend, knowing I will work with it doesn't make my day...
Nens, no feu això sense la supervisió d'un àngel de la guarda.
Kids, do this only under a guard angel's supervision.
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 burn 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
* 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 irregular heartbeat or from fluid buildup in the lungs. Even splashes of hydrogen fluoride on the skin can be fatal. Skin contact with hydrogen fluoride may cause no immediate signs of exposure.
* Swallowing only a small amount of highly concentrated hydrogen fluoride will affect major internal organs and may be fatal.
* Often, patients exposed to low concentrations of hydrogen fluoride on the skin do not show effects right away. Severe pain at the exposure site may be the only symptom for several hours. Visible damage may not be shown until 12 to 24 hours after the exposure.
* Depending on the concentration of the chemical and the length of time of exposure, skin contact 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.
Long-term health effects of acute exposure to hydrogen fluoride
* People who survive after being severely injured by breathing in hydrogen fluoride may suffer lingering chronic lung disease.
* Burns caused by concentrated hydrogen fluoride may take a long time to heal and may result in severe scarring.
* Fingertip injuries from hydrogen fluoride may result in persistent pain, bone loss, and injury to the nail bed.
* Eye exposure to hydrogen fluoride may cause prolonged or permanent visual defects, blindness, or total destruction of the eye.
* Swallowing hydrogen fluoride can damage the esophagus and stomach. The damage may progress for several weeks, resulting in gradual and lingering narrowing of the esophagus.