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Cyclosarin

Cyclosarin
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Names
Preferred IUPAC name
Cyclohexyl methylphosphonofluoridate
Other names
GF;(Fluoro-methyl-phosphoryl)oxycyclohexane
Identifiers
329-99-7 N
3D model (Jmol) Interactive image
ChemSpider 58069 YesY
Properties
C7H14FO2P
Molar mass 180.16 g·mol−1
Appearance Colorless liquid
Density 1.1278 g/cm3
Melting point −30 °C (−22 °F; 243 K)
Boiling point 239 °C (462 °F; 512 K)
Almost insoluble
Hazards
Flash point 94 °C (201 °F; 367 K)
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
N  (what is YesYN ?)
Infobox references

Cyclosarin or GF (cyclohexyl methylphosphonofluoridate) is an extremely toxic substance used as a chemical weapon. It is a member of the G-series family of nerve agents, a group of chemical weapons discovered and synthesized by a German team led by Dr. Gerhard Schrader. The major nerve gases are the G agents, sarin (GB), soman (GD), tabun (GA), and the V agents such as VX. The original agent, tabun, was discovered in Germany in 1936 in the process of work on organophosphorus insecticides. Next came sarin, soman and finally the most toxic, cyclosarin, a product of commercial insecticide laboratories prior to World War II.

As a chemical weapon, it is classified as a weapon of mass destruction by the United Nations. Pursuant to UN Resolution 687 its production and stockpiling was outlawed globally by the Chemical Weapons Convention (CWC) of 1993, although Egypt, Israel, North Korea and South Sudan have not ratified the CWC (thus not outlawing their own stockpiling of chemical weapons).

Like its predecessor sarin, cyclosarin is a liquid organophosphate nerve agent. Its physical characteristics are, however, quite different from sarin.

At room temperature, cyclosarin is a colorless liquid whose odor has been variously described as sweet and musty, or resembling peaches or shellac. Unlike sarin, cyclosarin is a persistent liquid, meaning that it has a low vapor pressure and therefore evaporates relatively slowly, about 69 times slower than sarin and 20 times slower than water.


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