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Other Names: Anhydrous Ammonia; see also Ammonium Hydroxide
Formula: NH3
Sp. Gr.: 0.64 @ 0ºC / 32ºF
Viscosity: 0.3 cPs
Remarks: Ammonia is a colorless gas or liquid, has a pungent odor, is lighter than air as a gas, is easily liquefied by pressure, is very soluble in water or alcohol and has a b.p. -29ºC / -20ºF, freezing point -78ºC / -108ºF. The largest volume of ammonia is used for fertilizers. Other uses include production of nitric acid, urea, acrylonitrile; refrigeration; solvent. Ammonia liquid causes burns; the gas is extremely irritating, causing nausea and difficulty in breathing.
Pump Notes: Cast iron construction, neoprene or buna n elastomers are recommended. Double mechanical seals with oil reservoir are normally used for shaft sealing. Pump design should be suitable for a thin, non-lubricating liquid.
See also: Refrigeration, Freon