Potential explosion hazard of carbonaceous nanoparticles: explosion parameters of selected materials

Details

• Personal Author:
  Dastidar AG ; Hachmeister Z ; Lim M ; Turkevich LA
• Description:
  Following a previous explosion screening study, we have conducted concentration and ignition energy scans on several carbonaceous nanopowders: fullerene, SWCNT, carbon black, MWCNT, graphene, CNF,and graphite. We have measured minimum explosive concentration (MEC), minimum ignition energy(MIE), and minimum ignition temperature (MITcloud) for these materials. The nanocarbons exhibit MEC 10 1-10 2g/m3, comparable to the MEC for coals and for fine particle carbon blacks and graphites. The nanocarbons are confirmed mainly to be in the St-1 explosion class, with fullerene, at KSt 200 bar-m/s,borderline St-1/St-2. We estimate MIE 10 2-10 3J, an order of magnitude higher than the MIE for coals but an order of magnitude lower than the MIE for fine particle graphites. While the explosion severity of the nanocarbons is comparable to that of the coals, their explosion susceptibility (ease of ignition) issignificantly less (i.e., the nanocarbons have higher MIEs than do the coals); by contrast, the nanocarbons exhibit similar explosion severity to the graphites but enhanced explosion susceptibility (i.e., thenanocarbons have lower MIEs than do the graphites). MITcloud> 550.C, comparable to that of the coals and carbon blacks. [Description provided by NIOSH]
• Subjects:
  Coal Dust Explosions Occupational Health Particulate Matter Safety
• Keywords:
  Author Keywords: Explosion Hazard Carbon Coal-dust Explosion Explosive-dusts Explosive-hazards Ignition-point Nanomaterials Nanoparticle Nanotechnology Particulate-dust Particulates

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• ISSN:
  0304-3894
• Document Type:
  Text
• Genre:
  Journal Article
• Place as Subject:
  Illinois ; Ohio ; OSHA Region 5
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  DART - Division of Applied Research and Technology
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  97-103
• Volume:
  295
• NIOSHTIC Number:
  nn:20046146
• Citation:
  J Hazard Mater 2015 Sep; 295:97-103
• Contact Point Address:
  Leonid A. Turkevich, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, Division of Applied Research and Technology,1090 Tusculum Avenue, MS-R7, Cincinnati, OH 45226
• CAS Registry Number:
  Carbon black (CAS RN 1333-86-4) ; Graphene (CAS RN 1034343-98-0) ; Graphite (CAS RN 7782-42-5)
• Federal Fiscal Year:
  2015
• NORA Priority Area:
  Manufacturing
• Peer Reviewed:
  True
• Source Full Name:
  Journal of Hazardous Materials
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:69c454b254fa1bdad7221f0f18dc1a541fa887575ac64f07cfc563c1921b230ee61c5b41da81ec252add3e46661d0f8899450eb52693ebd13af70983ff20c178
• Download URL:
  https://stacks.cdc.gov/view/cdc/201280/cdc_201280_DS1.pdf
• File Type:
  [PDF - 628.43 KB ]