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Classification of compounds in accordance with DIN EN ISO 11890-2 (Paints and varnishes - Determination of VOC and SVOC contents)

Posted Date:2025/8/12

9.2 Classification of compounds

In order to determine the VOC and/or SVOC content, the compounds analysed shall be classified to the category VOC or SVOC according to the following priority list (see also Figure 4).

- Identified compounds shall be classified according to requirements as given by the contractor, i.e. any valid legislation, label or a classification.

- If the classification shall be done via the boiling point (BP) of an identified compound, the boiling point shall be taken from the non-exhaustive list of VOC, SVOC and NVOC compounds available in Annex A.

- If an identified substance is not present in this list, a reliable source should be used for referencing the boiling point, This source shall be referenced in the test report.

NOTE Examples of reliable sources are the disseminated data of the REACH registration on the ECHA website www.echa.europa.eu or the website www.chemspider.com from the Royal Society of chemistry.

- If no requirement for VOC or SVOC definition is given for identified compounds, the identified compounds should be listed individually.

- If the compounds cannot be identified via their mass spectra, classification can be made by using specific markers (classification by retention time).

- If the compounds cannot be identified via their mass spectra and no boiling point requirement is given, all compounds eluting with a retention time prior or equal to DEA shall be handled as VOC, and all compounds eluting after DEA and prior or equal to C22 shall be handled as SVOC. All compounds eluting after C22 shall be handled as NVOC.

The relative retention time order of substances does not necessarily correlate with boiling point order. Therefore, classification to VOC or SVOC via the use of marker compounds is prone to misclassification.Classification by boiling point or other pre-given requirements is preferred with respect to classification by marker compounds.

Figure 4-Scheme for classification of compounds