Jiblet
26-09-2011, 04:47 PM
Just making this topic as today I discovered that a product I was about to buy could be dangerous.
I would advise people not to buy or use this product as I feel the warnings on the label are not sufficient. Being a chemist and working with Hydroflouric Acid (HF) I know of the dangers of the substance. We use concentrated HF (48%) but it is strictly controlled with Fumehood, face shield, rubber gloves, leather apron, running water, calcium gluconate gel, safety showers and an onsite medic with calcium tablets/solution to inject into the affected site.
This product contains chemicals that mix and produce HF (even if in small quantities). This product has the potential to produce 0.2% HF (2,000 ppm) and, with a boiling point of 19 degC, potential for all of that to become a gas.
HF is fatally toxic to people as it attacks calcium (found in bones and bone marrow).
Personally, i'd stay the frack away from it, and definately not risk using it on my car (be it with bare hands or even rubber gloves).
Here is a link to the MSDS (quite long, but first few pages are notable): http://www.meguiars.com.au/msds/G14024.pdf
Here is an extract from Wikipedia about concentrated HF:
Hydrofluoric acid (HF) is a solution of hydrogen fluoride in water. Hydrogen fluoride gas is a severe poison that may immediately and permanently damage lungs and the corneas of the eyes. Water solutions (hydrofluoric acid) are a contact-poison with the potential for deep, initially painless burns, with later tissue death. By interfering with body calcium metabolism, the concentrated acid may also cause systemic toxicity and eventual cardiac arrest and fatality, after contact with as little as 160 cm2 (24.8 square inches) of skin.
http://www.fluoridealert.org/Mednets-HF.htm
Description: Colorless gas or fuming liquid; weak solutions have the appearance of water.
Warning properties: Disagreeable, pungent odor at <1 ppm; irritation of eyes and throat at 3 ppm
OSHA PEL (permissible exposure limit) = 3 ppm (averaged over an 8-hour workshift)
OSHA STEL (short term exposure limit) = 6 ppm ( 15-minute sample)
NIOSH IDLH (immediately dangerous to life or health) = 30 ppm ERPG-2 (emergency response planning guideline) = 20 ppm
Often, patients exposed to HF (<20%) initially are asymptomatic; effects can be delayed 12 to 24 hours.
http://i596.photobucket.com/albums/tt44/jiblet087/2011-09-22140853.jpg
I would advise people not to buy or use this product as I feel the warnings on the label are not sufficient. Being a chemist and working with Hydroflouric Acid (HF) I know of the dangers of the substance. We use concentrated HF (48%) but it is strictly controlled with Fumehood, face shield, rubber gloves, leather apron, running water, calcium gluconate gel, safety showers and an onsite medic with calcium tablets/solution to inject into the affected site.
This product contains chemicals that mix and produce HF (even if in small quantities). This product has the potential to produce 0.2% HF (2,000 ppm) and, with a boiling point of 19 degC, potential for all of that to become a gas.
HF is fatally toxic to people as it attacks calcium (found in bones and bone marrow).
Personally, i'd stay the frack away from it, and definately not risk using it on my car (be it with bare hands or even rubber gloves).
Here is a link to the MSDS (quite long, but first few pages are notable): http://www.meguiars.com.au/msds/G14024.pdf
Here is an extract from Wikipedia about concentrated HF:
Hydrofluoric acid (HF) is a solution of hydrogen fluoride in water. Hydrogen fluoride gas is a severe poison that may immediately and permanently damage lungs and the corneas of the eyes. Water solutions (hydrofluoric acid) are a contact-poison with the potential for deep, initially painless burns, with later tissue death. By interfering with body calcium metabolism, the concentrated acid may also cause systemic toxicity and eventual cardiac arrest and fatality, after contact with as little as 160 cm2 (24.8 square inches) of skin.
http://www.fluoridealert.org/Mednets-HF.htm
Description: Colorless gas or fuming liquid; weak solutions have the appearance of water.
Warning properties: Disagreeable, pungent odor at <1 ppm; irritation of eyes and throat at 3 ppm
OSHA PEL (permissible exposure limit) = 3 ppm (averaged over an 8-hour workshift)
OSHA STEL (short term exposure limit) = 6 ppm ( 15-minute sample)
NIOSH IDLH (immediately dangerous to life or health) = 30 ppm ERPG-2 (emergency response planning guideline) = 20 ppm
Often, patients exposed to HF (<20%) initially are asymptomatic; effects can be delayed 12 to 24 hours.
http://i596.photobucket.com/albums/tt44/jiblet087/2011-09-22140853.jpg