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Tetramethylsuccinonitrile in polyvinyl chloride products for food and its release into food-simulating solvents

  • Hajimu Ishiwata
  • Takiko Inoue
  • Kunitoshi Yoshihira
Original Papers

Summary

The content of tetramethylsuccinonitrile (TMSN), the main decomposition product of 2,2′-azobis-isobutyronitrile, in polyvinyl chloride (PVC) products used for food packaging, were examined as well as food-simulating solvents. The TMSN concentration in 17 PVC products ranged from below the detection limit, 0.05 mg/kg, up to 523 mg/kg. The release of TMSN from two PVC products into five kinds of food-simulating solvents at 60 °C for 30 min was observed, except for 1 ± 1 μg/kg of TMSN in n-heptane from a PVC bottle containing 523±30.4 mg/kg of TMSN. The detection limit of TMSN in the food-simulating solvents was 1 μg/kg. When pieces of the bottle were stored in olive oil at 40 °C for 120 days, 5 ± 1 μg/kg of TMSN was detected in the oil. The release of TMSN from the pieces of the bottle into olive oil between 80 and 140 °C depended on the formula 1ny = 0.08786x - 5.696,r = 0.9927, wherey is the concentration (μg/kg) of TMSN in olive oil, x is the temperature (°C), andr is the correlation coefficient.

Keywords

Polyvinyl Chloride Food Packaging Main Decomposition Chloride Product Main Decomposition Product 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Tetramethyl-succinonitril in Polyvinylchloridprodukten für Lebensmittel und seine Freisetzung in simulierenden Lösungsmitteln

Zusammenfassung

Untersucht wurde der Gehalt von Tetramethyl-Succinonitril (TMSN), dem Hauptzersetzungsprodukt von 2,2′-Azobis-iso-butyronitril, in Polyvinylchloridprodukten (PVC) für Lebensmittel im Zusammenhang mit dessen Freisetzung in simulierenden Lösungsmitteln. Die TMSN-Konzentration in 17 PVC-Produkten lag teilweise unterhalb der Meßgrenze; ansonsten lag sie zwischen 0,05 und 523 mg/kg. Ausgenommen von 1 ± 1 μg/kg TMSN in n-Heptan aus einer PVC-Flasche, die 523 ± 30,4 mg/kg, TMSN enthielt, wurde bei einer Temperatur von 60 °C innerhalb von 30 min aus zwei PVC-Produkten keine Freisetzung von TMSN in fünf verschiedenen simulierenden Lösungsmitteln beobachtet. Die Erfassungsgrenze von TMSN in den simulierenden Lösungsmitteln lag bei 1 μg/kg. Bei Aufbewahrung von Teilen der PVC-Flasche in Olivenöl bei 40 °C für 120 Tage wurden 5 ± 1 μg/kg TMSN im Olivenöl erfaßt. Die Freisetzung von TMSN aus der Flasche in das Olivenöl bei Temperaturen zwischen 80 und 140 °C verlief nach der Formel Iny = 0,08786x - 5,696, (r = 0,9927);y = Konzentration (μg/kg von TMSN im Olivenöl),x = Temperatur (°C) undr = Korrelationskoeffizient.

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Copyright information

© Springer-Verlag 1987

Authors and Affiliations

  • Hajimu Ishiwata
    • 1
  • Takiko Inoue
    • 1
  • Kunitoshi Yoshihira
    • 1
  1. 1.National Institute of Hygienic SciencesSetagaya-ku, TokyoJapan

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