Chemical Structure / July 18, 2018 / Laney Wolfe
Biphenyl is used in organic syntheses, heat transfer fluids, dye carriers, food preservatives, as an intermediate for polychlorinated biphenyls, and as a fungistat in the packaging of citrus fruits. In workers, acute (short-term) exposure to high levels of biphenyl has been observed to cause eye and skin irritation and toxic effects on the liver, kidneys, and central and peripheral nervous systems. Kidney effects have been observed in chronically (long-term) exposed animals. EPA has classified biphenyl as a Group D, not classifiable as to human carcinogenicity.
Benzoyl peroxide (BPO) is a medication and industrial chemical. As a medication it is used to treat mild to moderate acne. For more severe cases it may be used together with other treatments. Some versions come mixed with antibiotics such as clindamycin. Other uses include bleaching flour, hair bleaching, teeth whitening, and textile bleaching. It is also used in the plastic industry. Common side effects are skin irritation, dryness, or peeling. Use in pregnancy is of unclear safety. Benzoyl peroxide is in the peroxide family of chemicals. When used for acne it works by killing bacteria.
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