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Safety and Health Topics: |
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| Ammonia |
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General Description
Synonym: Anhydrous ammonia
OSHA IMIS Code Number: 0170
Chemical Abstracts Service (CAS) Registry Number: 7664-41-7
NIOSH, Registry of Toxic Effects (RTECS) Identification Number: BO0875000
Department of Transportation Regulation Number (49 CFR 172.101): 1005 125 (anhydrous); 2672 154 (10-35% solution); 2073 125 (>35-50% solution); 1005 125 (>50% solution)
NIOSH Pocket Guide to Chemical Hazards, Ammonia: chemical description, physical properties, potentially hazardous incompatibilities, and more
Exposure Limits
OSHA Permissible Exposure Limit (PEL) for General Industry: 29 CFR 1910.1000 Z-1 Table -- 50 ppm, 35 mg/m3 TWA
OSHA Permissible Exposure Limit (PEL) for Maritime: 29 CFR 1915.1000 Table Z-Shipyards -- 50 ppm, 35 mg/m3 TWA
American Conference of Governmental Industrial Hygienists (ACGIH) Threshold Limit Value (TLV): 25 ppm, 17 mg/m3 TWA; 35 ppm, 24 mg/m3 STEL
National Institute for Occupational Safety and Health (NIOSH) Recommended Exposure Limit (REL): 25 ppm, 18 mg/m3 TWA; 35 ppm, 27 mg/m3 STEL
Health Factors
NIOSH Immediately Dangerous To Life or Health Concentration (IDLH): 300 ppm
Potential symptoms: Eye, nose, throat irritation; corneal burns, increased intraocular pressure; coughing; laryngeal edema; dyspnea, bronchospasm; chest pain; pulmonary edema or pneumonitis; pink frothy sputum; skin burns; vesiculation
Health Effects: Respiratory Effects---Acute lung damage/edema (HE11); Asthma, pulmonary fibrosis, bronchiolitis obliterans (HE9); Irritation-Eye, Nose, Throat, Bronchi, Skin---Marked (HE14); Blindness (HE14)
Affected organs: Respiratory system, eyes, skin
Date Last Revised: 02/25/2003
Literature Basis:
- (symptoms/health effects)
Hung, O.L. and Shih, R.D.: Firefighters (Chapter 15), in Occupational, Industrial, and Environmental Toxicology, Greenburg, M.I., Hamilton, R.J. and Phillips, S.D., eds. St. Louis: Mosby, 1997, pp. 113-122.
Monitoring Methods used by OSHA
Laboratory Sampling/Analytical Method:
sampling media: Sulfuric Acid impregnated Carbon Bead (Supelco ORB0-77 tube or equivalent)
maximum volume: 24.0 Liters maximum flow rate: 0.1 L/min TWA
maximum volume: 7.5 Liters maximum flow rate: 0.5 L/min STEL
current analytical method: Ion Chromatography; IC/Conductivity
method reference: OSHA Manual of Analytical Methods (OSHA ID-188)
method classification: Fully Validated
On-Site Sampling Techniques/Methods:
device: Detector Tube
manufacturer: Gastec
model/type: 3La
sampling information: 0.5 to 2 strokes
upper measurement limit: 200 ppm
detection limit: 0.5 ppm
overall uncertainty: 16.4% for 5 to 20 ppm, 8.2% for 20 to 100 ppm
method reference: on-site air secondary (SEI Certified)
device: Detector Tube
manufacturer: Matheson-Kitagawa
model/type: 8014-105SC
sampling information: follow manufacturer's instructions
upper measurement limit: 260 ppm
detection limit: approximately 1 ppm
overall uncertainty: unknown
method reference: on-site air secondary (SEI Certified)
device: Detector Tube
manufacturer: Dräger
model/type: Ammonia 5/a, order no. CH 20501
sampling information: 10 strokes
upper measurement limit: 70 ppm
detection limit: approximately 1 ppm
overall uncertainty: 25%
method reference: on-site air secondary (manufacturer)
Wipe sampling: No
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| Revised: 07 August 2003 |
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