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Ammonia

Gas Name:

Ammonia

Chemical Formula:

NH₃

Synonyms:

Anhydrous Ammonia, R717

Product Uses, Sources & Applications

Ammonia is used in its gaseous, liquefied, and aqueous forms in a number of applications including:

Refrigerant (R717) – used extensively in food processing applications and ice rink applications
A main component in the production of commercial fertilizer
Used extensively in the production of commercial and household cleaning products
Pharmaceutical production
Papermaking: pulping and coating
Rubber production

Hazards

Toxicity

Short Term (15-minute STEL*):

35

ppm

Long-term (8-hr TWA*):

25

ppm

*Based on OSHA regulation. Always consult local regulations directly.

Flammability

Lower Explosive Limit (LEL):

15% by volume

NIOSH Pocket Guide:

View pocket guide

Physical Properties

Appearance and Odor:

Colorless gas with an irritating, pungent odor

Relative Density (air = 1.0):

0.597

Recommendations

Sensor Type:

Electrochemical Diffusion Type

Standard Range:

0-50 or 0-100 ppm

Standard Trip Points:

25 ppm, 35 ppm

Recommended Sensor Mounting Height:

Ceiling level, around probable source of leak.

Additional Notes on Sensor Mounting Height

If there is pressurized ammonia gas being used in the application, sensors should be placed near a potential leak.

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Armstrong Monitoring

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Ottawa, Ontario, Canada

K2E 7K3

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