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Carbonyl Sulfide

General Description

  • Synonyms: Carbon Oxide Sulfide; Carbon Oxysulfide
  • OSHA IMIS Code Number: R220
  • Chemical Abstracts Service (CAS) Registry Number: 463-58-1
  • NIOSH Registry of Toxic Effects of Chemical Substances (RTECS) Identification Number: FG6400000
  • Department of Transportation Regulation Number (49 CFR 172.101) and Emergency Response Guidebook: UN2204; Poison Gas; Flammable Gas
  • Chemical Description and Physical Properties:
    • molecular weight: 60.07
    • boiling point: (-50.2)°C
    • molecular formula: COS

Monitoring Methods used by OSHA

Primary Laboratory Sampling/Analytical Method (SLC1):
  • Graphatized Carbon Black
  • maximum volume: 10 Liters
  • maximum flow rate: 0.05 L/min
  • analytical 1: Gas Chromatography; GC/FPD
  • method reference: 2 (OSHA In-House File)
  • method classification: Not Validated
  • note: Article from J of Chromatography; V 99, pg 661-672d

Leiber, Mark A.; Berk, Howard C. "Analytical Chemistry", 1985, 57, 2792-96 ...Title: Determination of Carbonyl Sulfide in Air by Derivatization with 1,3-Diaminopropane and Capillary Gas Chromatographic Analysis ...Collection: Coated Resin but with pre-impinger of NaOH to remove CO2 which causes low results for COS. This is not convenient.

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