Journal of Korean Society of Occupational and Environmental Hygiene (한국산업보건학회지)

Korean Industrial Hygiene Association (한국산업보건학회)
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Changes in Physico-chemical Properties of Single or Mixture State of DMF, MEK and Toluene in Synthetic Leather Factories

합성피혁제조업에서 취급하는 DMF, MEK, Toluene의 단일과 혼합물질 상태에 따른 물리·화학적 특성 변화

  • Kim, Ki-Woong (Occupational Safety and Health Research Institute, KOSHA) ;
  • Won, Yong Lim (Occupational Safety and Health Research Institute, KOSHA) ;
  • Park, Dong Jin (Occupational Safety and Health Research Institute, KOSHA) ;
  • Lee, Jung-Suk (Occupational Safety and Health Research Institute, KOSHA) ;
  • Han, In-Soo (Occupational Safety and Health Research Institute, KOSHA) ;
  • Lee, Su-Hee (Deaku Regional Office, KOSHA)
  • 김기웅 (한국산업안전보건공단 산업안전보건연구원) ;
  • 원용림 (한국산업안전보건공단 산업안전보건연구원) ;
  • 박동진 (한국산업안전보건공단 산업안전보건연구원) ;
  • 이정석 (한국산업안전보건공단 산업안전보건연구원) ;
  • 한인수 (한국산업안전보건공단 산업안전보건연구원) ;
  • 이수희 (한국산업안전보건공단 대구지역본부)
  • Received : 2014.04.16
  • Accepted : 2014.06.20
  • Published : 2014.06.30
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Abstract

Objectives: It was known that workers in synthetic leather company are mainly co-exposed to dimethylformamide(DMF) with methyl ethyl ketone(MEK) or toluene(TOL) instead of a single dimethylformamide. This study was examined to the physico-chemical properties in single DMF and binary mixture DMF with MEK or TOL. Materials: Physico-chemical properties were measured by Korean and American Standard Test Methods. Results: Boiling point, specific gravity and flash point in single DMF were significantly higher than binary mixture DMF with MEK or TOL and such difference was dependent on the mixing ratio of MEK and TOL, and low explosion limit in binary mixture DMF with TOL was only significantly lower than single DMF. However, Reid vapor pressure had significantly higher in binary mixture DMF with MEK or TOL compared with single DMF. Conclusions: Our results demonstrate that the binary mixture DMF with MEK or TOL synergistically increases volatilization of DMF. It was concluded that the interaction between DMF and MEK and/or TOL might play a key role in the volatilization process of DMF under environmental conditions of workplace.

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