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Phosgene

General Description

  • Synonyms: Carbonyl chloride; Carbon oxychloride; Chloroformyl chloride
  • OSHA IMIS Code Number: 2070
  • Chemical Abstracts Service (CAS) Registry Number: 75-44-5
  • NIOSH Registry of Toxic Effects of Chemical Substances (RTECS) Identification Number: SY5600000
  • Department of Transportation Regulation Number (49 CFR 172.101) and Emergency Response Guidebook: 1076 125
  • NIOSH Pocket Guide to Chemical Hazards, Phosgene: chemical description, physical properties, potentially hazardous incompatibilities, and more

Exposure Limits

  • OSHA Permissible Exposure Limit (PEL):
  • American Conference of Governmental Industrial Hygienists (ACGIH) Threshold Limit Value (TLV) (1992): 0.1 ppm (0.4 mg/m3) TWA
  • National Institute for Occupational Safety and Health (NIOSH) Recommended Exposure Limit (REL): 0.1 ppm (0.4 mg/m3) TWA; 0.2 ppm (0.8 mg/m3) Ceiling (15 Minutes)

Health Factors

  • Carcinogenic Classification:
  • NIOSH Immediately Dangerous To Life or Health Concentration (IDLH): 2 ppm
  • Potential Symptoms: Eye irritation; dry burning throat, choking; vomiting; coughing, foamy bloody sputum, dyspnea, chest pain; pulmonary edema, cyanosis; skin redness, burns; frostbite (liquid form)
  • Health Effects: Acute lung damage/edema (HE11); Cumulative lung damage-Emphysema, fibrosis (HE10); Irritation-Eyes, Skin---Marked (HE14)
  • Affected Organs: Respiratory system, skin, eyes
  • Literature Basis:
    • International Chemical Safety Cards (WHO/IPCS/ILO): Phosgene.
    • EPA Air Toxics Website: Phosgene. U.S. Environmental Protection Agency Technology Transfer Network.
  • Date Last Revised: 07/09/2003

Monitoring Methods used by OSHA

Primary Laboratory Sampling/Analytical Method (SLC1):
  • Coated XAD-2 Tube (150/75 mg sections, 20/60 mesh) Coated with 10% (w/w) 2-(Hydroxymethyl)piperidine
  • analytical solvent: Toluene
  • maximum volume: 240 Liters
  • maximum flow rate: 1.0 L/min
  • current analytical method: Gas Chromatography; GC/NPD
  • method reference: OSHA Analytical Method (OSHA 61)
  • method classification: Fully Validated
  • note: OSHA personnel may obtain sampling tube from the Salt Lake Technical Center. When relative humidity at sampling site is low, reduce maximum sample size to 120 Liters and sampling rate to 0.5 L/min.
On-Site Sampling Techniques/Methods:
  • Detector Tube
  • manufacturer: AUER/MSA
  • model/type: Phosgene-0.1, MSA P/N 803949, AUER P/N 5085-854
  • sampling information: follow manufacturer's instructions
  • upper measurement limit: 20 ppm
  • detection limit: approx. 0.1 ppm
  • overall uncertainty: unknown
  • method reference: on-site air secondary (manufacturer)
  • Detector Tube
  • manufacturer: Dräger
  • model/type: Phosgene 0.02/a, order no. 81 01521
  • sampling information: 20 or 40 strokes
  • upper measurement limit: 1 ppm
  • detection limit: approx. 0.01 ppm
  • ooverall uncertainty: 16%
  • method reference: on-site air secondary (manufacturer)
  • Detector Tube
  • manufacturer: Dräger
  • model/type:Phosgene 0.25/a, order no. CH 19401
  • sampling information: 1 to 33 strokes
  • upper measurement limit: 1.5 ppm
  • detection limit: approx. 0.04 ppm
  • ooverall uncertainty: 32%
  • method reference: on-site air secondary (manufacturer)
  • Detector Tube
  • manufacturer: Dräger
  • model/type:Phosgene 0.25/a, order no. CH 28301
  • sampling information: 5 strokes
  • upper measurement limit: 5 ppm
  • detection limit: approx. 0.1 ppm
  • ooverall uncertainty: 25%
  • method reference: on-site air secondary (manufacturer)
  • Detector Tube
  • manufacturer: Gastec
  • model/type: 16
  • sampling information: 1 to 10 strokes
  • upper measurement limit: 20 ppm
  • detection limit: 0.01 ppm
  • ooverall uncertainty: 16% for 0.1 to 1 ppm, 8% for 1 to 5 ppm
  • method reference: on-site air secondary (manufacturer)
  • Detector Tube
  • manufacturer: Matheson-Kitagawa
  • model/type: 8014-146S
  • sampling information: follow manufacturer's instructions
  • upper measurement limit: 20 ppm
  • detection limit: approx. 0.1 ppm
  • ooverall uncertainty: unknown
  • method reference: on-site air secondary (manufacturer)

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