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Environmental fate & pathways

Phototransformation in water

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Description of key information

Photolytic half-life of 2,6-DIPN in distilled water was 16 h.

Key value for chemical safety assessment

Half-life in water:
16 h

Additional information

2,6-DIPN was used as supporting substance. Photolytic half-life of 2,6-DIPN in distilled water was 16 h. Salt water significantly accelerated the decomposition process. 70% of 2,6-DIPN degraded after 4 h in 0.5 M NaCl solution, while in distilled water only ca. 60 % was removed until 24-h irradiation.

2,7-DIPN exhibited a half-life of 6.4 h in distilled water.