Bisphenol S

Bisphenol S (BPS) is an organic compound with the formula (HOC6H4)2SO2. It is used in some plastics, primarily as a replacement for Bisphenol A (BPA). BPS belongs to a group of compounds known as bisphenols, which are notable for their two phenol groups.

History

BPS was first synthesized in the early 20th century but did not come into common use until the early 21st century, when concerns about the health effects of BPA led to its replacement in many products with BPS.

Production and Use

BPS is produced by the condensation of two equivalents of phenol with sulfur dioxide in the presence of a base. It is used in a variety of products, including thermal paper, plastic bottles, and food packaging. It is also used in the production of epoxy resins and polycarbonate plastics.

Health Effects

Like BPA, BPS is an endocrine disruptor, which means it can interfere with the body's hormone system. Studies have shown that BPS can mimic the hormone estrogen, potentially leading to a variety of health effects. These can include reproductive disorders, developmental disorders, and an increased risk of certain cancers.

Environmental Impact

BPS is persistent in the environment and can be found in water, soil, and air. It can also bioaccumulate in animals, leading to potential exposure through the food chain. Studies have shown that BPS can have toxic effects on aquatic life, including fish and invertebrates.

Regulation

In some countries, the use of BPS is regulated due to its potential health and environmental effects. However, regulations vary widely, and in many cases, BPS is not subject to the same restrictions as BPA.

See Also

• Bisphenol A
• Endocrine disruptor
• Phenol
• Plastic