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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Physical & Chemical properties

Stability: thermal, sunlight, metals

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Administrative data

Link to relevant study record(s)

stability: thermal, sunlight, metals, other
Fisk (2002) IIA 02/18
Type of information:
read-across based on grouping of substances (category approach)
Adequacy of study:
key study
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
according to guideline
other: Atkinson method AOPWIN program v1.90
Principles of method if other than guideline:
The values were estimated using the atmospheric oxidation program (AOPWIN v.1.90). This program was developed by the Syracuse Research Corporation (SRC). It estimates the rate constant for the atmospheric, gas phase reaction between organic chemicals and photochemically produced hydroxyl radicals (and for some chemical types, ozone).

Being entirely structure based the rate constant is additive in which the number of specific atoms and groups in the molecule is the sole factor in the estimation process for any given structure. The contribution made by various relelvant reactions is taken from a database of values which are experimentally determined or represent expert judgement.
GLP compliance:
Specific details on test material used for the study:

AOPWIN obtained an OH rate constant of 218.7744 E-12 cm3/molecule.sec.

At the default EU concentration of OH radicals in the atmosphere this equates to a half life of 1.76 hours.

IR5878 is rapidly degraded in air
Atmospheric DT50 : 1.76 hours
Executive summary:

IR5878 is rapidly degraded in airAtmospheric DT50: 1.76 hours

Description of key information

IR5878 is rapidly degraded in airAtmospheric DT50: 1.76 hours

Additional information

Justification for classification or non-classification