Sarin

CAS RN:107-44-8

Cleanup Methods

Cover with vermiculite, diatomaceous earth, clay, fine sand, sponges, and paper or cloth towels. Treat with large amounts of aqueous sodium hydroxide solution (minimum 10 % by weight). Scoop decontaminated material and place in approved container. After sealing, decontaminate the exterior and label. All leaking containers will be over packed with sorbent (e.g. vermiculite) placed between the interior and exterior containers. Label and dispose according to regulations. Conduct general area monitoring. If aqueous sodium hydroxide is not available, use following in the order of preference: Sodium Carbonate, and Supertropical Bleach Slurry (STB).

Decontamination: Liquid: Small Areas: Puddles of liquid must be contained by covering with vermiculite, diatomaceous earth, clay, fine sand, sponges, or towels. Place the absorbed material into containers with a high density polyethylene liner. Decontaminate the area with copious amounts of aqueous sodium hydroxide solution (a minimum of 10 percent by weight). If sodium hydroxide solution is not available, then sodium carbonate may be used. Removal of porous material, including painted surfaces, that may have absorbed Nerve Agent liquid may be required as these materials could continue to re-release liquid and/or vapor after exposure has ceased. /"G" Series Nerve Agents/

Decontamination: Vapor: ... Small Areas: Ventilation. In heavily contaminated areas, decontamination with copious amounts of aqueous sodium hydroxide solution (a minimum of 10 percent by weight) may be required. If sodium hydroxide solution is not available, then sodium carbonate may be used. Removal of porous material, including painted surfaces, that may have absorbed Nerve Agent vapor may be required as these materials could continue to re-release vapor after exposure has ceased. /"G" Series Nerve Agents/

Evacuate and restrict persons not wearing protective equipment from area of spill or leak until cleanup is complete. Remove all ignition sources. Ventilate area of spill or leak. Rapidly hydrolyze by dilute aqueous sodium hydroxide or sodium carbonate forming relatively non-toxic acid. Decontaminants include bleach slurry, dilute alkali, hot soapy water, steam and ammonia. Absorb liquids in vermiculite, dry sand, earth, peat, carbon, or a similar material and deposit in sealed containers. Keep this chemical out of confined spaces, such as a sewer, because of the possibility of an explosion, unless the sewer is designed to prevent the build up of explosive concentrations. It may be necessary to contain and dispose of this chemical as a hazardous waste. If material or contaminated runoff enters waterways, notify downstream users of potentially contaminated waters. Contact your Department of Environmental Protection or your regional office of the federal EPA for specific recommendations. If employees are required to clean-up spills, they must be properly trained and equipped. OSHA 1910.120(q) may be applicable.

Surface decontaminationmay be accomplished using hypochlorite bleach slurries, dilute alkalis, or DS2 decontainmination solution. Steam and ammonia may be used for the decontamination of confined spaces. Hot, soapy water can also be effective.

If decontamination cannot be left to natural processes, chemical neutralizers or removal must be used. ... /SRP: Not to be used for personnel decontamination/ Decontaminating agent DS2 is a general purpose decontaminant. It consists of 70% diethylenetriamine, 28% ethylene glycol monomethyl ether & 2% sodium hydroxide. DS2 reacts with both the nerve agents & blister agents to effectively reduce their hazards. ... Important limitations in the use of DS2 are: (a) personnel must remain masked because of the vapor; (b) rubber gloves must be worn to protect the hands; (c) it is a combustible liq, therefore it must not be allowed to get on hot metal surfaces such as running engines or exhaust pipes. /Chemicals in war/

Protection: Evacuation: Immediately isolate an area around any liquid or solid contamination for at least 700 feet in all directions. If possible, identify the agent and develop a downwind hazard diagram (see Table 3.2). Adjust the initial isolation distance as appropriate. Based on the type of release, amount of material aerosolized, persistence of the agent and local conditions (e.g., weather, population density, time of day), shelter in place until the initial cloud passes may be the most appropriate course of action since timely evacuation of the threatened downwind population may not be possible. Depending on the persistence of the agent and the potential for condensation of agent from the cloud, evacuation of the threatened population after passage of the initial cloud may be appropriate. /"G" Series Nerve Agents/

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