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Iron Pentacarbonyl (as Fe)

General Description

  • Synonyms: Iron carbonyl; Pentacarbonyl iron
  • OSHA IMIS Code Number: 1521
  • Chemical Abstracts Service (CAS) Registry Number: 13463-40-6
  • NIOSH Registry of Toxic Effects of Chemical Substances (RTECS) Identification Number: NO4900000
  • Department of Transportation Regulation Number (49 CFR 172.101) and Emergency Response Guidebook: 1994 131
  • NIOSH Pocket Guide to Chemical Hazards - Iron Pentacarbonyl (as Fe): Physical description, chemical properties, potentially hazardous incompatibilities, and more
  • Chemical Description and Physical Properties:
    • colorless to yellow to dark-red, oily liquid
    • molecular weight: 195.9

Exposure Limits

  • ACGIH Threshold Limit Value (TLV): 0.1 ppm, 0.23 mg/m3 TWA; 0.2 ppm, 0.45 mg/m3 STEL
  • NIOSH Recommended Exposure Limit (REL): 0.1 ppm TWA; 0.2 ppm STEL
  • Updated NIOSH Immediately Dangerous To Life or Health Concentration (IDLH): 0.4 ppm

Health Factors

  • Health Effects: Acute Toxicity CNS (HE4); Acute lung damage (HE11)

Monitoring Methods used by OSHA

Primary Laboratory Sampling/Analytical Method (SLC1):
  • Midget Fritted Glass Bubbler containing 10 mL of (1:1) 3% Hydrochloric Acid (HCl)/Iodine-Potassium Iodide (I2-KI)
  • maximum volume: 480 Liters
  • minimum volume: 240 Liters
  • maximum flow rate: 1.0 L/min (TWA)
  • maximum volume: 15 Liters
  • maximum flow rate: 1.0 L/min (STEL)
  • current analytical method: Colorimetric
  • method reference: 13
  • method classification: Not Validated

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