Title: Identification of 2,3-Dimethyl-2,3-Diisobutyl Succinonitrile in Laser Printer Emissions
Authors: BARRERO JOSEFATIRENDI SALVATORERENIERO FABIANOGIORDANO GiuseppeKOTZIAS DIMITRIOS
Citation: RAPID COMMUNICATIONS IN MASS SPECTROMETRY vol. 22 p. 471-476
Publisher: JOHN WILEY & SONS LTD
Publication Year: 2008
JRC N°: JRC42561
ISSN: 0951-4198
URI: http://publications.jrc.ec.europa.eu/repository/handle/JRC42561
DOI: 10.1002/rcm.3386
Type: Articles in Journals
Abstract: 2,3-dimethyl-2,3-diisobutyl succinonitrile was identified as the main volatile organic compound (> 90%) emitted from laser printers during the printing process. Experiments were carried out in a large environmental chamber of 30 m3, where the printers were placed and working simulating ¿real office setting¿ conditions. Air samples were taken on Tenax TA adsorbent cartridges in the vicinity of the printers and further analyzed by thermal desorption gas chromatography mass spectrometry (TDGCMS). The structure of the compound has been determined and is presented in this study. Additional data obtained by nuclear magnetic resonance (NMR), Fourier transform infrared spectroscopy (FTIR), liquid chromatography/tandem mass spectrometry (LC/MS/MS) support the proposed structure, with no reported CAS number, as 2,3-dimethyl 2,3-diisobutyl succinonitrile. It is a byproduct of the thermal decomposition of 2,2'-Azobis(2,4-dimethyl valeronitrile), a commercially available free radical polymerization initiator used in polymerization processes during the manufacturing of the toners. By means of head space GCMS 15 toners used in black & white and colour printers have been investigated. Six of them contained 2,3-dimethyl-2,3-diisobutyl succinonitrile, which has also been detected in the respective processed paper.
JRC Institute:Institute for Health and Consumer Protection

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