WebMD Symptom Checker helps you find the most common symptom combinations and medical conditions related to palpitations (fluttering in chest). Click on the combination that matches your symptoms to find the conditions that may cause these problems.
Nerve agents are a class of phosphorus-containing organic chemicals (organophosphates) that disrupt the mechanism by which nerves transfer messages to organs. The disruption is caused by blocking acetylcholinesterase, an enzyme that normally destroys acetylcholine, a neurotransmitter.
Chemical Properties. VX is an odorless liquid with a density slightly greater than water and a viscosity similar to 30-weight motor oil and color ranging from clear to amber depending on purity (#Tucker, 2006). It is three times as toxic as Sarin making it the most toxic of all nerve agents.