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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Environmental fate & pathways

Phototransformation in air

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Description of key information

Calculation with AOPWIN v1.92 (EPIWIN software by US-EPA), overall gas-phase reaction constant: 33.177 E-12 cm³/molecules-sec (= 0.000002866cm³/molecules-day) 

Key value for chemical safety assessment

Half-life in air:
3.87 h
Degradation rate constant with OH radicals:
0 cm³ molecule-1 d-1

Additional information

The phototransformation in air of the substance bis(2,6-diisopropylphenyl)carbodiimide was determined by the computer program AOPWIN v1.92 (EPIWIN software) by US-EPA (2017). The program estimates the gas-phase reaction rate for the reaction between the most prevalent atmospheric oxidant (hydroxyl radicals) and the desired chemical. For carbodiimide an overall gas-phase reaction constant (also called OH rate constant) of 33.177 E-12 cm³/molecules-sec (= 0.000002866 cm³/molecules-day) and an atmospheric half-life of 0.322 days (3.87 hours) was calculated. Neither an ozone reaction nor any nitrate radical reaction is important for the substance. No GLP criteria are applicable for the usage of this tool, but due to the fact that it is a scientifically accepted calculation method the estimations performed are reliable with restrictions and can be used for the chemical safety assessment.