The color in these things come from an added chemical known as a dye.

How else do you restrict half the chemicals known to man?

It also has a chemical known as Lobellicyonycin, which may cause dizziness.

It is based on a synthetic chemical, known as a perfluorocarbon.

It also led the list in discharges of chemicals known or thought to cause cancer and birth defects.

A third approach involves the natural chemicals known as pheromones.

"Some of the most dangerous chemicals known are found in nature."

But in the last 10 months, two young people from South Jersey died getting high on the chemical, also known as "laughing gas."

This chemical, known as salicin, may make blood disorders worse.

This chemical, known as salicin, may make liver disease worse.