NIOSH Manual of Analytical Methods-Part I NIOSH Monitoring Methods

Details

• Corporate Authors:
  National Institute for Occupational Safety and Health
• Description:
  The NIOSH analytical method for determining toluene-diisocyanate (26471625) (TDI) in air is described. TDI is hydrolyzed to the corresponding toluenediamine derivative which is then diazotized by a sodium-nitrite and sodium-bromide solution. The diazo compound is reacted with N-(1-naphthyl)-ethylenediamine to form a color complex that is analyzed colormetrically at 550 nanometers. The analytical range of the method is 0.007 to 0.14 parts per million. Free aromatic amines will interfere with the analysis. Description provided by NIOSH
• Subjects:
  • Air Pollutants, Occupational
  • Air Pollution, Indoor
  • Colorimetry
  • Environmental Monitoring
  • Isocyanates
  • Occupational Health
  • Safety
• Keywords:
  • Air-contamination; Air-sampling; Isocyanates; Analytical-methods; Diazo-compounds; Colorimetry
• Series:
  NIOSH Numbered Publications
• Document Type:
  Text
• Genre:
  Handbooks
• Place as Subject:
  Ohio ; OSHA Region 5
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  141-142
• Volume:
  1
• NIOSHTIC Number:
  nn:00108937
• Citation:
  Cincinnati, OH: U.S. Department of Health, Education, and Welfare, Public Health Service, Centers for Disease Control, National Institute for Occupational Safety and Health, 1977 Apr; 1:141-142
• CAS Registry Number:
  • Toluene diisocyanate (CAS RN 26471-62-5)
• Federal Fiscal Year:
  1977
• Peer Reviewed:
  False
• Download URL:
  https://stacks.cdc.gov/view/cdc/236927/cdc_236927_DS1.pdf
• File Type:
  [PDF - 168.02 KB]
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:7dc847c09aedf140bc731323e8446b4703641ae07d6ad9e7b7238120dab30b8f7dcaa9b938d34d035f87873a0fe7fec262d5d13dcaf290925445e82b6de3b57d