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Scope and Principle in EN 14719 (Pulp, paper andboard-Determinationof the DIPN content by solventextraction) (1)

Posted Date:2025/12/23

1 Scope

This European Standard describes a method for the determination of the content of disopropylnaphthalene (DIPN) in paper, board and pulp by solvent extraction. The content of disopropylnaphthalene (DIPN) is expressed as mg of total disopropylnaphthalene DIPN isomers per kilogram of paper, board or pulp. This test method is appropriate for the quantitative determination of the content of disopropylnaphthalene (DIPN) with a limit of determination about 0,6 mg/kg.

2 Principle

The content of total disopropylnaphthalene (DIPN) is determined by solvent extraction of the paper, board or pulp sample and analysed by gas chromatography with mass selective detection (GC-MS), using diethylnaphthalene as an internal standard.

NOTE It may be worthwhile to state that disopropylnaphthalene (DIPN) can be present as a contaminant in pulp, paper and board. For the time being it cannot be avoided that disopropyinaphthalene (DIPN) is present when using recovered fibres. It may be present as either adsorbed onto the test piece or present in an encapsulated form. Acetone is an effective solvent for complete extraction of both physical forms of disopropylnaphthalene (DIPN).