Analysis of air for tertiary amine catalysts used in the polyurethane foam industry.

Details

• Personal Author:
  Cooper, Charles V. ; Foley, G. David ; Tucker, Samuel P.
• Description:
  A study was conducted to develop a sampling and analytical method for four tertiary amine catalysts in air to enable NIOSH investigators to perform an industrial hygiene study at a polyurethane (9009545) foam manufacturing facility. Thermosorb/A sampling cartridges were evaluated for use as solid sorbent samplers in this method. The catalysts included N-ethylmorpholine (76584), triethylenediamine (280579), bis(2-)dimethylamino)ethyl)-ether (3033623), and N-cocomorpholine. Average recoveries of the four compounds from Thermosorb/A tubes were satisfactory, at least 72%, for the respective loadings. These recoveries were determined after the samples had been stored in the Thermosorb/A tubes for 2 days at room temperature. They were found to be stable on Thermosorb/A tubes during storage for 21 days at room temperature. The relative standard deviation for recovery of 24 micrograms of bis(2- (dimethylamino)ethyl)ether after 21 days of storage was 14%. The limit of detection of each of the four amine catalysts in solution was in the range of 0.7 to 1.3 micrograms/milliliter. In breakthrough tests where front and backup Thermosorb/A tubes in series were employed, each front tube collected greater than 95% of the total quantity collected by two tubes. Test concentrations were 232 to 25mg/m3 at a flow rate of 0.1 liters/minute and a relative humidity of 75% in each case. [Description provided by NIOSH]
• Subjects:
  Amines Chemistry Environmental Monitoring Occupational Health Polyurethanes Safety
• Keywords:
  NIOSH-Author; Analytical-methods; Amines; Chemical-analysis; Air-quality-monitoring; Air-sampling-techniques; Air-sampling-equipment; Polyurethane-foams
• ISSN:
  0002-8894
• Document Type:
  Text
• Genre:
  Journal Article
• Place as Subject:
  Ohio ; OSHA Region 5
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  DPSE - Division of Physical Sciences and Engineering
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Volume:
  52
• Issue:
  12
• NIOSHTIC Number:
  nn:00204889
• Citation:
  Am Ind Hyg Assoc J 1991 Dec; 52(12):A664-A665
• CAS Registry Number:
  Bis(dimethylaminoethyl) ether (CAS RN 3033-62-3) ; Dabco (CAS RN 280-57-9) ; Ethylmorphine (CAS RN 76-58-4)
• Federal Fiscal Year:
  1992
• Peer Reviewed:
  True
• Source Full Name:
  American Industrial Hygiene Association Journal
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:7dc847c09aedf140bc731323e8446b4703641ae07d6ad9e7b7238120dab30b8f7dcaa9b938d34d035f87873a0fe7fec262d5d13dcaf290925445e82b6de3b57d
• Download URL:
  https://stacks.cdc.gov/view/cdc/247743/cdc_247743_DS1.pdf
• File Type:
  [PDF - 168.02 KB ]