Correlation and Reproducibility Data on a Replacement Agent for Carbon Tetrachloride Testing of Organic Vapor Cartridges

Details

• Personal Author:
  Calvert C ; Kulczycki GW ; Moyer, Ernest S. ; Wassel JT
• Description:
  The two most promising substitutes, hexane (110543) and pentane (109660) for carbon-tetrachloride (56235) (CT), used in evaluating the adsorption capacity of charcoal in organic vapor cartridges and canisters, were evaluated. Numerous brands of cartridges were tested for both nonpowered and powered air purifying respirator (PAPR) cartridges. All cartridges were NIOSH certified. The conditioned air stream (50% or 80% relative humidity) containing the test agent was pushed through a single cartridge. Testing was conducted with 550 parts per million (ppm) pentane and 1,000ppm hexane at 64 liters/minute and 80% relative humidity, the most severe test condition for negative pressure organic cartridges. The breakthrough time for CT was 50 minutes, compared with 39.75 minutes for pentane and 36.96 minutes for hexane. The Weibull regression model showed that the results were not significantly different. The most severe PAPR organic vapor cartridge test condition for CT had a minimum breakthrough time of 24 minutes at 1,000ppm CT. The point estimates for pentane and hexane were determined using the CT breakthrough data as control conditions. The pentane point estimate was 50.02 minutes, and the hexane point estimate was 51.77 minutes. The authors conclude that the new tests for calibrating charcoal in cartridges show good reproducibility. [Description provided by NIOSH]
• Subjects:
  Chemistry Hazardous Substances Hydrocarbons Occupational Health Personal Protective Equipment Respiratory Protective Devices Safety
• Keywords:
  Air-purifying-respirators Chemical-cartridge-respirators Chemical-indicators Chlorinated-hydrocarbons NIOSH-Author Respiratory-protective-equipment Toxic-vapors
• ISSN:
  1047-322X
• Document Type:
  Text
• Genre:
  Journal Article
• Place as Subject:
  OSHA Region 3 ; West Virginia
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  DSR - Division of Safety Research
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  271-277
• Volume:
  12
• Issue:
  4
• NIOSHTIC Number:
  nn:00236405
• Citation:
  Appl Occup Environ Hyg 1997 Apr; 12(4):271-277
• CAS Registry Number:
  Carbon tetrachloride (CAS RN 56-23-5) ; Hexane (CAS RN 110-54-3) ; Pentane (CAS RN 109-66-0)
• Federal Fiscal Year:
  1997
• Peer Reviewed:
  True
• Source Full Name:
  Applied Occupational and Environmental Hygiene
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:df266fbd295120233c779f17f191f9dc976dd999ff33defc49b521c0df5d48eec37f1a6e3b0a6430fcaf56c284fbdb595b0a8bb32eb37283d16d2f0aabc584ed
• Download URL:
  https://stacks.cdc.gov/view/cdc/197835/cdc_197835_DS1.pdf
• File Type:
  [PDF - 700.96 KB ]