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Environmental fate & pathways

Phototransformation in air

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Description of key information

After evaporation or exposure to the air, the product will be slowly degraded by photochemical processes. 
The substance has an estimated half-life in air of ~71 hours. As the cut-off time for reaching the stratosphere is 2 days, the substance is considered to have potential for reaching the stratosphere and/or long-range atmospheric transport. This assessment refers to dry air. In mist, rain, droplets and aerosols, hydrolysis will be the major fate process due to the short half-life in aqueous environments. Therefore assessment of the parent substance may be of low relevance.

Key value for chemical safety assessment

Additional information

QSAR-disclaimer:

In Article 13 of Regulation (EC) No 1907/2006, it is laid down that information on intrinsic properties of substances may be generated by means other than tests, provided that the conditions set out in Annex XI (of the same Regulation) are met.

According to Annex XI of Regulation (EC) No 1907/2006 (Q)SAR results can be used if (1) the scientific validity of the (Q)SAR model has been established, (2) the substance falls within the applicability domain of the (Q)SAR model, (3) the results are adequate for the purpose of classification and labeling and/or risk assessment and (4) adequate and reliable documentation of the applied method is provided.

For the assessment of 5 -chlorovaleryl chloride and its hydrolysis product 5 -chlorovaleric acid (Q)SAR results were used for phototransformation in air (hydroxyl radical reaction).The criteria listed in Annex XI of Regulation (EC) No 1907/2006 are considered to be adequately fulfilled and therefore the endpoint(s) sufficiently covered and suitable for risk assessment.

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