Many dye-houses in South Asia and elsewhere dump the waste water, which can contain formaldehyde, lead and chromium, straight into rivers and waterways. This can adversely affect aquatic life in ...

Books dating back more than 100 years have been found to have poisonous dyes. They include lead and chromium up to six times above acceptable legal levels, according to new research. People have ...

The researchers speculate that the dyes used to color the books contain other lead-based pigments that lack chromium, such as ...

However, the presence of both toxic lead and hexavalent chromium of Erin Brockovitch fame has led to it being largely replaced by a family of azo dyes, known as Pigment Yellows, though chrome yellow ...