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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Administrative data

Endpoint:
phototransformation in air
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Scientifically acceptable calculation.

Data source

Reference
Reference Type:
other: EPIWIN calculation
Title:
Unnamed
Year:
2007
Report date:
2007

Materials and methods

Principles of method if other than guideline:
calculated using SRC AOP v1.92
GLP compliance:
no

Test material

Constituent 1
Chemical structure
Reference substance name:
Tetrachlorophthalic anhydride
EC Number:
204-171-4
EC Name:
Tetrachlorophthalic anhydride
Cas Number:
117-08-8
Molecular formula:
C8Cl4O3
IUPAC Name:
tetrachloro-1,3-dihydro-2-benzofuran-1,3-dione
Details on test material:
- Name of test material (as cited in study report): Tetrachlorophthalic anhydride

Study design

Estimation method (if used):
PHOTOCHEMICAL REACTION WITH OH RADICALS
- Concentration of OH radicals: 500000
- Degradation rate constant: 0.0000000000000316 cm³/molecule-sec
- Temperature for which rate constant was calculated: 25 °C
- Computer programme: SRC AOP v1.92, 29 Mar 2008
- Calculated t 1/2 is based on a 24 h day

Results and discussion

Dissipation half-life of parent compound
DT50:
507.6 d

Applicant's summary and conclusion