US declares styrene to be an 'anticipated human carcinogen'
US federal health regulators on Friday declared that styrene is ``reasonably anticipated to be a human carcinogen'', a classification that sector officials have warned could have broad negative impact across multiple US industries.
The US government on Friday added formaldehyde, a substance found in plastics and other commonly used products, to a list of known carcinogens and warned that the chemical styrene might cause cancer.