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Ammonium Chloride (Fume)

General Description

  • OSHA IMIS Code Number: 0175
  • Chemical Abstracts Service (CAS) Registry Number: 12125-02-9
  • Chemical Description and Physical Properties:
    • fume

Exposure Limits

  • American Conference of Governmental Industrial Hygienists (ACGIH) Threshold Limit Value (TLV): 10 mg/m3 TWA; 20 mg/m3 STEL
  • National Institute for Occupational Safety and Health (NIOSH) Recommended Exposure Limit (REL): 10 mg/m3 TWA; 20 mg/m3 STEL

Health Factors

  • Health Effects: Irritation-Eye, Nose, Throat, Skin---Mild (HE16) LD50 (oral, rat) 1650 mg/kg

Monitoring Methods used by OSHA

Primary Laboratory Sampling/Analytical Method (SLC1):
  • Tared Low Ash Polyvinyl Chloride (LAPVC) filter 5 microns
  • maximum volume: 960 Liters
  • maximum flow rate: 2.0 L/min (TWA)
  • maximum volume: 30 Liters
  • maximum flow rate: 2.0 L/min (STEL)
  • current analytical method: Gravimetric
  • method reference: 11, 12
  • sampling and analytical error: 0.10
  • method classification: Fully Validated
  • current analytical method: Ion Specific Electrode; ISE
  • method reference: 2 (OSHA ID-164)
  • method classification: Partially Validated
  • current analytical method: Ion Chromatography; IC/Conductivity
  • method reference: 2 (OSHA ID-188)
  • sampling and analytical error: 0.08
  • method classification: Fully Validated
  • note: Submit as a separate sample only if the gross weight of the sample yields an air concentration greater than the PEL. When the analysis of a compound is requested an analysis is performed for total ammonia and reported as the compound. The analytical method does not distinguish between dust and fume.
Wipe Sampling Method:
  • Whatman smear tab
  • analytical solvent: Deionized Water

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