| 11. | Destroying phosgene is relatively easy and cheap compared to more deadly chemical weapons,
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| 12. | Both chlorine and phosgene poison gas can cause people to choke to death.
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| 13. | Diphenyl carbonate may be used in place of phosgene.
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| 14. | It is about 4 times as poisonous as phosgene.
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| 15. | Gases used included chlorine, mustard gas and phosgene.
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| 16. | Mustard gas was manufactured as well as chlorine, phosgene and Paris Green.
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| 17. | PFIB is about 10 times as toxic as phosgene.
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| 18. | The gas was found to be a mixture of about chlorine and phosgene.
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| 19. | -- 1963-67 : Egypt uses phosgene and mustard gas against Yemen.
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| 20. | Phosgene smells like freshly cut hay or grass.
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