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sec-Amyl Acetate

General Description

  • Synonyms: 2-Pentanol acetate; 1-Methylbutyl acetate; Acetic acid, 2-pentyl ester
  • OSHA IMIS Code Number: 0191
  • Chemical Abstracts Service (CAS) Registry Number: 626-38-0
  • NIOSH Registry of Toxic Effects of Chemical Substances (RTECS) Identification Number: AJ2100000; 54750
  • Department of Transportation Regulation Number (49 CFR 172.101) and Emergency Response Guidebook: UN1104 129 Flammable Liquid
  • Chemical Description and Physical Properties:
    • clear, colorless liquid with a fruity odor
    • molecular weight: 130
    • boiling point: 273°F
    • vapor pressure: 7 mm
    • melting point: -148°F
  • Incompatibilities: Nitrates; strong oxidizers, alkalies, and acids

Exposure Limits

  • OSHA Permissible Exposure Limit (PEL):
    • General Industry: 125 ppm (650 mg/m3)
    • Construction Industry: 125 ppm (650 mg/m3) TWA
  • American Conference of Governmental Industrial Hygienists (ACGIH) Threshold Limit Value (TLV): 125 ppm (665 mg/m3) TWA
  • National Institute for Occupational Safety and Health (NIOSH) Recommended Exposure Limit (REL): 125 ppm TWA

Health Factors

  • Potential Symptoms: Eye, nose irritation; narcosis; dermatitis
  • Health Effects: Irritation-Eye, Nose, Throat---Moderate (HE15) CNS Depression (HE7) LD50 (oral, rat) 3670 mg/kg
  • Affected Organs: Respiratory system, eyes, skin

Monitoring Methods used by OSHA

Primary Laboratory Sampling/Analytical Method (SLC1):
  • Charcoal Tube (100/50 mg sections, 20/40 mesh)
  • analytical solvent: Carbon Disulfide
  • maximum volume: 10 Liters
  • maximum flow rate: 0.2 L/min
  • current analytical method: Gas Chromatography; GC/FID
  • method reference: NIOSH Analytical Method (NIOSH 1450)
  • sampling analytical error: 0.12
  • method classification: Partially Validated

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