Anhydrous Ammonia

Anhydrous ammonia is a nitrogen-rich crop fertilizer. It is a liquid when stored and becomes a gas when applied to the soil. Contact with anhydrous ammonia causes rapid dehydration resulting in severe burns of the skin and mucous membranes. Proper storage, application, and personal protective equipment use is essential when using anhydrous ammonia (3).

The Occupational Safety and Health Administration's anhydrous ammonia regulation, 29 CFR 1910.111, applies to the design, construction, location, installation, and operation of anhydrous ammonia systems including refrigerated ammonia storage systems. However, it is recommended that anyone handling anhydrous ammonia wear a face shield or goggles, rubber gloves, and a heavy-duty long-sleeved shirt as minimum protection. A full-face piece respirator with NIOSH-approved ammonia canisters is available at all fixed anhydrous ammonia storage locations and in transport vehicles (10).

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