Formaldehyde in air.

Details

• Corporate Authors:
  National Institute for Occupational Safety and Health
• Description:
  A method is described for the spectrophotometric determination of formaldehyde in the air. Formaldehyde reacts with chromotropic-acid (148254) and sulfuric-acid (7664939) solution to form a purple monocationic chromogen. The absorbance of the colored solution is read in a spectrophotometer at 580 nanometers and is proportional to the quantity of formaldehyde (50000) in the solution. Details are given as to interferences, range and sensitivity, precision and accuracy, effect of storage, instrumentation and sampling equipment, reagents, collection and shipping of samples, calibration and standards, and calculations. [Description provided by NIOSH]
• Subjects:
  Aldehydes Colorimetry Environmental Monitoring Formaldehyde Hazardous Substances Occupational Health Safety
• Keywords:
  Analytical-Methods; Toxic-substances; Air-quality-measurement; Air-sampling; Sampling-methods; Colorimetry; Analytical-instrumentation; Formaldehyde; Aldehydes; Microanalysis
• Series:
  NIOSH Numbered Publications
• Document Type:
  Text
• Genre:
  Guidance
• Place as Subject:
  Ohio ; OSHA Region 5
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  DLCD - Division of Laboratories and Criteria Development
• Topic:
  Workplace Safety & Health
• Location:
  North America
• NIOSHTIC Number:
  nn:00069553
• Citation:
  NIOSH 1974 Jan; :125
• CAS Registry Number:
  Chromotropic acid (CAS RN 148-25-4) ; Formaldehyde (CAS RN 50-00-0) ; Sulfuric acid (CAS RN 7664-93-9)
• Federal Fiscal Year:
  1974
• Peer Reviewed:
  False
• Source Full Name:
  Division of Laboratories and Criteria Development, NIOSH, Cincinnati, Ohio, NIOSH Manual of Analytical Methods, HEW Publication No. (NIOSH) 75-121
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:7dc847c09aedf140bc731323e8446b4703641ae07d6ad9e7b7238120dab30b8f7dcaa9b938d34d035f87873a0fe7fec262d5d13dcaf290925445e82b6de3b57d
• Download URL:
  https://stacks.cdc.gov/view/cdc/236877/cdc_236877_DS1.pdf
• File Type:
  [PDF - 168.02 KB ]