| Synthetic Dyes |
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Chemical and synthetic dyes in their origin and properties are dense in toxic substances. They have been obtained from derivatives of petroleum and coal through a highly polluting process. These types of dyes were invented during the Industrial Revolution in Germany. They have been synthesized from the same raw materials used for the production of explosives and organic compounds rich in nitrogen such as nitroglycerin or TNT (trinitrotoluene). |
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