Registration Dossier
Registration Dossier
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EC number: 247-570-9 | CAS number: 26266-63-7
Phototransformation in air
Administrative data
Link to relevant study record(s)
Description of key information
THPA D3
It is predicted that the substance will be degraded in the atmosphere
- Reaction with OH radicals, half-life: 6.42 hours.
- Reaction with ozone, half-life: 1.38 hours.
- Overall degradation rate constant with OH radicals: 5.19E-6 cm3 molecule-1 day-1
THPAc D3
It is predicted that the substance will be degraded in the atmosphere
- Reaction with OH radicals, half-life: 6.01 hours.
- Reaction with ozone, half-life: 1.38 hours.
- Overall degradation rate constant with OH radicals: 5.53E-6 cm3molecule-1day-1
THPA D4
It is predicted that the substance will be degraded in the atmosphere
- Reaction with OH radicals, half-life: 6.43 hours.
- Reaction with ozone, half-life: 1.38 hours.
- Overall degradation rate constant with OH radicals: 5.17E-6 cm3molecule-1day-1
THPAc D4
It is predicted that the substance will be degraded in the atmosphere
- Reaction with OH radicals, half-life: 6 hours.
- Reaction with ozone, half-life: 1.38 hours.
- Overall degradation rate constant with OH radicals: 5.54E-6 cm3molecule-1day-1
Key value for chemical safety assessment
- Half-life in air:
- 6.01 h
- Degradation rate constant with OH radicals:
- 0 cm³ molecule-1 d-1
Additional information
In the presence of moisture, tetrahydrophthalic anhydride isomers are rapidly hydrolysed to the correspondent tetrahydrophthalic acids, of which THPAc D3 is most relevant to various environmental compartments than the submission substance.
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
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