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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Endpoint:
phototransformation in air
Type of information:
calculation (if not (Q)SAR)
Remarks:
Migrated phrase: estimated by calculation
Adequacy of study:
other information
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Accepted calculation method

Data source

Reference
Reference Type:
other: EPI suite calculation
Title:
Unnamed
Year:
2010
Report date:
2010

Materials and methods

Principles of method if other than guideline:
other: Calculation with AOPWIN v1.92, part of Episuite Software
GLP compliance:
no

Test material

Constituent 1
Reference substance name:
cis-1,4-dichlorobut-2-ene
EC Number:
216-021-5
EC Name:
cis-1,4-dichlorobut-2-ene
Cas Number:
1476-11-5
IUPAC Name:
1,4-dichlorobut-2-ene
Details on test material:
- Name of test material (as cited in study report): 2-Butene, 1,4-dichloro- (Cis-isomer)
- Purity: calculation refers to the pure substance

Study design

Estimation method (if used):
PHOTOCHEMICAL REACTION WITH OH RADICALS
- Calculation program: SRC AOPWIN v1.92
- Calculation based on a 24-hour day
- Concentration of OH radicals: 500000 OH/cm³
- OVERALL OH rate constant: 33.2865 E-12 cm³/mol-sec
- Temperature for which rate constant was calculated: 25 °C
Details on test conditions:
Sensitiser (for indirect photolysis): OH
Sensitiser concentration: 500000 molecule/cm³

Results and discussion

Dissipation half-life of parent compound
DT50:
11.568 h
Test condition:
OH reaction, 25 °C, 24 h day, 0.5E6 OH/cm³

Applicant's summary and conclusion