Template:Chemical agents/CA table

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Classes of chemical weapon agents
Class of agent Agent Names Mode of Action Signs and Symptoms Rate of action Persistency
Nerve Inactivates enzyme acetylcholinesterase, preventing the breakdown of the neurotransmitter acetylcholine in the victim's synapses and causing both muscarinic and nicotinic effects
  • Miosis (pinpoint pupils)
  • Blurred/dim vision
  • Headache
  • Nausea, vomiting, diarrhea
  • Copious secretions/sweating
  • Muscle twitching/fasciculations
  • Dyspnea
  • Seizures
  • Loss of consciousness
  • Vapors: seconds to minutes;
  • Skin: 2 to 18 hours
VX is persistent and a contact hazard; other agents are non-persistent and present mostly inhalation hazards.
Asphyxiant/Blood
  • Possible cherry-red skin
  • Possible cyanosis
  • Confusion
  • Nausea
  • Patients may gasp for air
  • Seizures prior to death
  • Metabolic acidosis
Immediate onset Non-persistent and an inhalation hazard.
Vesicant/Blister Agents are acid-forming compounds that damages skin and respiratory system, resulting burns and respiratory problems.
  • Mustards: Vapors: 4 to 6 hours, eyes and lungs affected more rapidly; Skin: 2 to 48 hours
  • Lewisite: Immediate
Persistent and a contact hazard.
Choking/Pulmonary Similar mechanism to blister agents in that the compounds are acids or acid-forming, but action is more pronounced in respiratory system, flooding it and resulting in suffocation; survivors often suffer chronic breathing problems.
  • Airway irritation
  • Eye and skin irritation
  • Dyspnea, cough
  • Sore throat
  • Chest tightness
  • Wheezing
  • Bronchospasm
Immediate to 3 hours Non-persistent and an inhalation hazard.
Lachrymatory agent Causes severe stinging of the eyes and temporary blindness. Powerful eye irritation Immediate Non-persistent and an inhalation hazard.
Incapacitating Causes atropine-like inhibition of acetylcholine in subject. Causes peripheral nervous system effects that are the opposite of those seen in nerve agent poisoning.
  • Inhaled: 30 minutes to 20 hours;
  • Skin: Up to 36 hours after skin exposure to BZ. Duration is typically 72 to 96 hours.
Extremely persistent in soil and water and on most surfaces; contact hazard.
Cytotoxic proteins

Non-living biological proteins, such as:

Inhibit protein synthesis 4-24 hours; see symptoms. Exposure by inhalation or injection causes more pronounced signs and symptoms than exposure by ingestion Slight; agents degrade quickly in environment