LAGUNA DESIGN / SCIENCE PHOTO LIBRARY LAGUNA DESIGN / SCIENCE PHOTO LIBRARY
Mustard gas. Computer artwork of a molecule of the nerve agent mustard gas (1, 1-thiobis[2- chloroethane], chemical formula (C4. H8. S. Cl2)). The atoms are shown as spheres and are colour- coded: carbon (blue), hydrogen (white), sulphur (yellow) and chlorine (green). The bonds between them are shown as cylinders. Mustard gas was used as a chemical warfare agent in the first world war. Exposure to mustard gas can cause coughing and shortness of breath in the short term. It also has long term effects such as mouth, throat and skin cancer as well as leukaemia.
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