ポリ塩化ビニル中のフタル酸ジ(2-エチルヘキシル)及びフタル酸ジイソノニル試験法

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タイトル別名
  • Test Method for Di(2-ethylhexyl) Phthalate and Di-isononyl Phthalate in Polyvinyl Chloride Products
  • ポリエンカビニル チュウ ノ フタルサン ジ 2 エチルヘキシル オヨビ フタルサン ジイソノニル シケンホウ

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A test method was developed for determining di(2-ethylhexyl) phthalate (DEHP) and di-isononyl phthalate (DINP) in polyvinyl chloride (PVC) products including articles for food contact use and toys. On the material test, they were extracted with acetone and n-hexane mixture (3:7) by soaking overnight at 37℃, then diluted by acetone and analyzed by GC/MS or GC-FID. By comparison of the extraction method and the dissolution method, the determined levels of DEHP and DINP in the PVC products were almost the same. The recoveries of the spiked DEHP and DINP were between 94.9% and 100.8%. DINP has two CAS number, No.28553-12-0 and No.68515-48-0. The former one is used more than the latter. For the migration test, samples were soaked in n-heptane at 25℃ for 60 min, and then directly analyzed by GC/MS or GC-FID. For a sample determined to be exceeding the standard value by GC-FID, it should be confirmed by GC/MS.

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