50 years ago, some of plastic’s toxic hazards were exposed

Excerpt from the September 7, 1974 issue of Science News

A stack of PVC pipe lies in front of workers.

Vinyl chloride is a key ingredient in a widely used plastic. The U.S. Environmental Protection Agency has proposed a review of the chemical’s safety and environmental data that could result in stricter regulations or even a ban of its use.

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Cover of Science News for Sept. 7, 1974

Toxic surprises from the plastics industry Science News, September 7, 1974

In the United States alone, more than 29 billion pounds of plastic are produced each year. An estimated 2.5 million workers are engaged in mass producing them…. Many of these chemicals used to make plastics are so toxic that they affect workers’ health. Earlier this year, 15 vinyl chloride workers died from a rare, chemically induced liver cancer.

Update

Vinyl chloride is a primary ingredient in PVC, a non-carcinogenic plastic commonly used for water pipes, IV bags and many other products. Safety standards for vinyl chloride were set in 1975. Today, U.S. workers’ exposure levels are tightly regulated. But the chemical may soon be on the chopping block. In July, the U.S. Environmental Protection Agency proposed a review of vinyl chloride’s safety and envi­ronmental data, which could result in a ban. The proposal follows a train derail­ment in Ohio in 2023 that exposed a nearby community to vinyl chloride and other hazardous chemicals. Residents reported respiratory symptoms and headaches, but it’s too soon to know what the exposure means for their risk of cancer.

Erin I. Garcia de Jesus is a staff writer at Science News. She holds a Ph.D. in microbiology from the University of Washington and a master’s in science communication from the University of California, Santa Cruz.