Monitors also were tracking high levels of other toxic chemicals, including formaldehyde, carbon tetrachloride, acetaldehyde and acrolein. ❋ The Center For Public Integrity (2011)
Then came what appeared to be the final blow: Thirteen years ago, carbon tetrachloride and other chemicals that were eating up the Earth's ozone layer were banned or restricted under the Montreal Protocol. ❋ Unknown (2009)
Some may use solvents that the art conservation field has long since abandoned, such as benzene and carbon tetrachloride, which are proven carcinogens, or caustic soda otherwise known as lye. ❋ Daniel Grant (2011)
At these schools, arranged alphabetically by state, the carbon tetrachloride exposures ranged from levels that could cause 10 additional cancers to levels that could cause 70 additional cancers per 1 million people based on a lifetime of exposure. ❋ Unknown (2009)
USA TODAY monitored for toxic chemicals, including carbon tetrachloride, in the air outside 95 schools in30 states. ❋ Unknown (2009)
She adds that since 2000 the plant has reduced its carbon tetrachloride emissions by 40% and now recycles more than 99% of the chemical. ❋ Unknown (2009)
"You'd put the stamp facedown in a little black tray, and put a few drops of carbon tetrachloride on," he says. ❋ Unknown (2009)
What has happened, Mitchell says, is that atmospheric circulation mixes carbon tetrachloride into air throughout the world, creating a fairly steady level globally. ❋ Unknown (2009)
Carbon tetrachloride released into the air can be expected "to stick around about 50 years," he adds. ❋ Unknown (2009)
For much of the 20th century, carbon tetrachloride was regarded as a miracle chemical: It was used to put out fires, degrease machines, kill bugs, dry-clean clothing and even help stamp collectors detect forgeries. ❋ Unknown (2009)
And in recent years, as more communities and the EPA have taken greater stock of the toxic chemicals found in the air we breathe, carbon tetrachloride accounts for 12% to 15% of cancer risks from toxic chemicals in some places. ❋ Unknown (2009)
Despite all of these efforts to eliminate carbon tetrachloride — classified by the U.S. ❋ Unknown (2009)
Chlorinated hydrocarbons include compounds such as chloroform, carbon tetrachloride and 1,1,1-trichloroethane (TCE). 1,1,1-trichloroethane is one of the least toxic of the chlorinated hydrocarbons. ❋ Unknown (2010)
Most of it, though, is probably left over from the past because carbon tetrachloride degrades so slowly, Mitchell says. ❋ Unknown (2009)
The largest single air emission source in 2007 was the DuPont Performance Elastomers plant in Beaumont, Texas, which reported 53,000 pounds of carbon tetrachloride emissions that year, according to the EPA inventory. ❋ Unknown (2009)
Some carbon tetrachloride wafts up from inside landfills, says Kenneth Mitchell, chief of the EPA's air toxics program in its Southeast regional office in Atlanta. ❋ Unknown (2009)
At these schools, arranged alphabetically by state, carbon tetrachloride exposures ranged from levels that could cause four to nine additional cancers per 1 million people based on a lifetime of exposure: ❋ Unknown (2009)
Carbon tetrachloride was detected at 70 of the schools. ❋ Unknown (2009)
Other toxic byproducts include fine-grain particulates, heavy metals like mercury, lead, chromium and nickel, trace elements such as arsenic and selenium, and various organics like dichloroethane, benzene, carbon tetrachloride, chloroform, and trichloroethylene. ❋ Unknown (2010)
