Editing Sarin

[[File:Sarin-2D-by-AHRLS-2011.png|thumb|Sarin-2D]]
[[File:Sarin-3D-balls-by-AHRLS-2012.png|thumb|Sarin 3D balls]]
'''Sarin''' (chemical name: ''propan-2-yl methylphosphonofluoridate''), also known by its NATO designation '''GB''' (denoting the ''G-series'' nerve agents), is a highly toxic, man-made compound classified as a nerve agent. It is considered a weapon of mass destruction (WMD) and is banned under the [[Chemical Weapons Convention]] (CWC) due to its extreme toxicity and lack of any practical civilian applications. Sarin is infamous for its use in warfare and terrorist attacks, posing a severe threat to public health and safety.

== History ==
Sarin was first synthesized in 1938 by German scientists working on [[pesticides]]. Its potential as a chemical weapon was quickly recognized, and it became part of Nazi Germany's chemical weapons program during [[World War II]]. Although not deployed in combat during the war, its production and stockpiling laid the groundwork for its later use.

In the post-war period, sarin became a key component of chemical weapons stockpiles in multiple countries, including the [[United States]] and the [[Soviet Union]]. Its most notorious uses include:
* The [[Iran–Iraq War]] (1980–1988), where it was deployed by Iraqi forces.
* The [[Tokyo subway sarin attack]] (1995), orchestrated by the Japanese doomsday cult [[Aum Shinrikyo]], killing 13 people and injuring thousands.

== Chemical Structure and Mechanism of Action ==
Sarin is a synthetic [[organophosphorus compound]] with the chemical formula (CH<sub>3</sub>)<sub>2</sub>CHOCH<sub>3</sub>P(O)F. It is a colorless, odorless liquid at room temperature that can rapidly vaporize into a gas, enabling it to disperse into the environment. This dual-phase nature makes it highly effective as a chemical weapon.

Sarin exerts its effects by inhibiting [[acetylcholinesterase]], an enzyme responsible for breaking down [[acetylcholine]], a neurotransmitter. By blocking this enzyme, sarin causes an accumulation of acetylcholine at neuromuscular junctions, leading to continuous stimulation of muscles and glands. This overstimulation manifests as severe cholinergic symptoms, eventually resulting in [[respiratory failure]] and death if untreated.

== Symptoms of Exposure ==
Exposure to sarin, even in minute amounts, can cause a range of symptoms depending on the dose and method of exposure (inhalation, dermal contact, or ingestion). Symptoms progress rapidly and may include:

=== Mild Symptoms ===
* Runny nose and watery eyes
* Constriction of [[pupils]] ([[miosis]])
* Eye pain and blurred vision
* Drooling and excessive [[sweating]]
* [[Chest tightness]] and coughing
* Nausea, vomiting, diarrhea, and abdominal pain

=== Severe Symptoms ===
* [[Seizures]]
* Loss of consciousness
* Muscular [[paralysis]]
* Respiratory failure due to paralysis of the [[diaphragm]] and other respiratory muscles
* Death within minutes to hours if untreated

== Treatment and Management ==
Immediate action is critical following sarin exposure to prevent death or permanent damage. Treatment involves:

1. '''Decontamination''':
* Removing contaminated clothing.
* Washing the skin thoroughly with soap and water to reduce absorption.
* Using chemical decontaminants where available.

2. '''Medical Intervention''':
* '''[[Atropine]]''': Blocks the effects of excess acetylcholine at muscarinic receptors, alleviating many cholinergic symptoms.
* '''[[Pralidoxime]] (2-PAM)''': Reactivates acetylcholinesterase by cleaving the sarin-enzyme bond, especially if administered early.
* '''[[Benzodiazepines]]''': Used to control seizures and prevent brain damage.

== Detection and Protection ==
Sarin detection requires specialized equipment capable of identifying trace levels of the agent in the environment. Military and emergency response units often use portable detectors or chemical sensors.

'''Personal Protection''':
* [[Hazmat suits]] and [[gas masks]] are essential for individuals at risk of exposure, such as first responders and military personnel.
* Protective measures must also be taken to prevent secondary contamination from exposed individuals or objects.

== Impact on Public Health ==
Sarin is a significant threat in scenarios of warfare or terrorism due to its rapid action and lethality. Even small amounts can cause mass casualties, overwhelming healthcare systems and creating long-lasting psychological and environmental impacts. Its use has spurred international treaties, such as the [[Chemical Weapons Convention]], which prohibits the production, stockpiling, and use of sarin and other chemical weapons.

== Legacy and International Regulation ==
The [[Organisation for the Prohibition of Chemical Weapons]] (OPCW) oversees compliance with the Chemical Weapons Convention, working to eliminate stockpiles of sarin and similar agents. Despite these efforts, sarin remains a weapon of choice for rogue states and terrorist groups, necessitating ongoing vigilance and preparedness.

== See Also ==
* [[Nerve agent]]
* [[Chemical warfare]]
* [[Organophosphates]]
* [[Tokyo subway sarin attack]]
* [[Chemical Weapons Convention]]
{{Chemical warfare}}
{{Acetylcholine metabolism and transport modulators}}
{{Oxygen compounds}}
{{Fluorine compounds}}
{{stub}}
[[Category:Acetylcholinesterase inhibitors]]
[[Category:Chemical weapons of the United States]]
[[Category:Cold War weapons of the Soviet Union]]
[[Category:G-series nerve agents]]
[[Category:German chemical weapons program]]
[[Category:German inventions of the Nazi period]]
[[Category:Isopropyl esters]]
[[Category:Methylphosphonofluoridates]]
[[Category:Soviet chemical weapons program]]
[[Category:Substances discovered in the 1930s]]
[[Category:Toxicology]]
[[Category:United Kingdom chemical weapons program]]