The World Health Organization (WHO) has warned of the dangers of polyethylylene (PE), a chemical that is widely used in plastic production.
The World Trade Organization (WTO) has banned the use of polystyrene, which is the main ingredient in many polyethylenimide plastic bottles.
The European Union and some countries, such as Brazil, have also introduced laws to limit the use and import of polycarbonate products.
But many manufacturers say they do not want to ban the chemical because it is widely available and cheap.
A new study by scientists at the University of Maryland has found that the chemical has no adverse effects on human health, and has a higher safety rating than polystyrenes, one of the main ingredients in polyethylens.
Polyethylene is made from a mixture of polypropylene and polyvinyl alcohol, and is used in plastics.
It is commonly used to make a range of household and office items.
The chemicals used in the plastic industry include polyethylpropylene (PVP), which is used for the manufacturing of polyester products, and polypropylene, which has a high melting point and can be used in paints and other plastics.
The new study looked at the safety of different types of polyethanol and found no evidence of harmful effects.
The findings are reported in the journal Scientific Reports.
“The chemicals we’re talking about don’t have any known health risks,” said study co-author J. David Loughrey, a professor of environmental health sciences at the university.
“There’s no reason to think that there are health problems associated with this.
There’s no concern that it would be a source of lead poisoning or any other adverse effects.”
He said polyethylendronate (PE) and polyethyleneglycol (PEEG) were not harmful to humans.
“Polyethylenes are used as a solvent in plastics,” Loughry said.
“If they’re used in a solvent, they’re not a toxin.
They’re just used to separate solvents and liquids.
They aren’t a source for cancer or any of the other health problems that we have.”
Loughrey and his colleagues studied a range, from PVP and PEEG to PEP and polycarbonates, to determine the safety and toxicity of the chemicals.
The study involved more than 2,000 people and found the chemicals did not pose any long-term health risks.
“We found that polyethylenediaminetetraacetic acid (PEA), an industrial solvent, does not have any effects on blood or kidney function or on other biomarkers of toxicity,” the researchers wrote.
The researchers said their findings were based on a small amount of data.
“This is very, very small,” Laughlin said.
“It’s a very small amount, it’s a small study, and the effect of it was very small.
It’s a concern, but it’s not a big concern.”
He added that the chemicals have long been used as part of the process of producing polyethylenic plastics, and were not widely used for production.
“If you’re going to use these, you need to be very careful about the chemicals that you’re using, and not just using them for one purpose,” Laughrey said.
A recent study by the University in Queensland found that some polyethylenergies were toxic, and that many of the polycarbonases in polyesters could pose a health risk.
The Australian study also showed that polycarbonated polyester and polyethoxyethylene, both used in many household products, were more toxic than polyprophenone and polystyrethane, the most commonly used industrial solvent.
The University of California, Davis, found in a study of nearly 2,500 people that a third of those using PVP or PEEG had elevated liver and kidney disease, compared with just one in two of those who used polyethylencenimidazole.
A study published in the New England Journal of Medicine in May found that exposure to the chemical polyethylphenol in drinking water had an increased risk of developing cancer in adults.
In the study, published in The American Journal of Public Health, researchers found that those who were exposed to the chemicals were at greater risk of liver cancer.
“Our findings indicate that exposure of drinking water to polyethyleners may be a risk factor for developing cancer,” the study’s lead author, Katherine M. Fries, said.