Registration Dossier
Registration Dossier
Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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.
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EC number: 907-132-6 | CAS number: -
Phototransformation in air
Administrative data
- Endpoint:
- phototransformation in air
- Type of information:
- read-across based on grouping of substances (category approach)
- Adequacy of study:
- key study
- Study period:
- Prior to or in 2001
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: Published literature
- Justification for type of information:
- Read across is based on the category approach. Please refer to attached category document.
Cross-reference
- Reason / purpose for cross-reference:
- reference to other study
Data source
Reference
- Reference Type:
- publication
- Title:
- Computer estimation of the atmospheric gas-phase reaction rate of organic compounds with hydroxyl radicals and ozone
- Author:
- Meylan and Howard
- Year:
- 1 993
- Bibliographic source:
- Chemosphere 36:2293-99.
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- other: Calculated using AOPWIN v. 1.92
- Deviations:
- not specified
- Principles of method if other than guideline:
- Estimation of second-order reaction rate constant with photochemically-generated hydroxyl radical at 25 °C. Estimated half-life calculated for assumed OH radical concentration of 1.5E06 OH/cm3
- GLP compliance:
- no
Test material
- Reference substance name:
- 3,6,9-trioxaundecane-1,11-diol
- EC Number:
- 203-989-9
- EC Name:
- 3,6,9-trioxaundecane-1,11-diol
- Cas Number:
- 112-60-7
- Molecular formula:
- C8H18O5
- IUPAC Name:
- 2,2'-[oxybis(ethane-2,1-diyloxy)]diethanol
- Reference substance name:
- Tetraethylene glycol
- IUPAC Name:
- Tetraethylene glycol
- Details on test material:
- No test material used. Method is a computer program, using SMILES code entry.
SMILES Code: O(CCOCCOCCO)CCO
Constituent 1
Constituent 2
- Specific details on test material used for the study:
- Details on properties of test surrogate or analogue material (migrated information):
Not applicable
Study design
- Estimation method (if used):
- Calculated using Aopwin v. 1.92, as in cited Reference, for assumed atmospheric OH concentration of 1.5E06 OH/cm3 at 25 °C.
- Light source:
- sunlight
- Details on test conditions:
- Estimated rate constant at 25 °C, assumed OH radical concentration of 1.5E06 OH/cm3.
Results and discussion
- Preliminary study:
- Not applicable
- Test performance:
- Half-life t ½ :2.5 hours.
Dissipation half-life of parent compound
- DT50:
- 2.5 h
- Test condition:
- 25 °C, background OH radical concentration of 1.5E06 OH/cm3
- Transformation products:
- not measured
- Results with reference substance:
- not applicable
Any other information on results incl. tables
Direct photolysis:
Half-life t ½ : 2.5 hrs.
Remarks: Estimation for photo-oxidation in air based on a calculated reaction rate constant of 5.037 x 10-11cm3/molecules-sec, and background OH radical concentration of 1.5E6 OH/cm3 at 25 °C.
Applicant's summary and conclusion
- Validity criteria fulfilled:
- not applicable
- Conclusions:
- Half-life t ½ : 2.5 hrs. at 25 °C and assumed backgroung OH radical concentration of 1.5E6 OH/cm3.
- Executive summary:
The photodegradation potential of tetraethylene glycol was examined using Aopwin v. 1.92, as described in cited Reference, for an atmospheric OH concentration of 1.5E6 OH/cm3. The Half-life t½ of 2.5 hrs. was calculated.
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