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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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.
Use of this information is subject to copyright laws and may require the permission of the owner of the information, as described in the ECHA Legal Notice.
EC number: 201-199-9 | CAS number: 79-36-7
Biodegradation in water: screening tests
Administrative data
- Endpoint:
- biodegradation in water: ready biodegradability
- Type of information:
- read-across from supporting substance (structural analogue or surrogate)
- Adequacy of study:
- key study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- data from handbook or collection of data
- Justification for type of information:
- Dichloroacetyl chloride hydrolyzes very fast (half-life in water is < 1 sec)forming dichloroacetic acid and hydrochloric acid.
Cross-reference
- Reason / purpose for cross-reference:
- read-across source
Reference
- Endpoint:
- biodegradation in water: ready biodegradability
- Type of information:
- experimental study
- Adequacy of study:
- weight of evidence
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- data from handbook or collection of data
- Qualifier:
- equivalent or similar to guideline
- Guideline:
- EU Method C.4-F (Determination of the "Ready" Biodegradability - MITI Test)
- GLP compliance:
- not specified
- Inoculum or test system:
- activated sludge (adaptation not specified)
- Parameter:
- % degradation (O2 consumption)
- Value:
- 97
- Sampling time:
- 15 d
- Interpretation of results:
- readily biodegradable
- Conclusions:
- Dichloroacetic acid, present at 100 mg/L, reached 97% of its theoretical BOD in 2 weeks using an activated sludge inoculum at 30 mg/L in the Japanese MITI test
Data source
Reference
- Title:
- NITE; Chemical Risk Information Platform (CHRIP). Biodegradation and Bioconcentration. Tokyo, Japan: Natl Inst Tech Eval. Available from, as of July 24, 2018: https://www.safe.nite.go.jp/english/db.html
- Year:
- 2 018
- Bibliographic source:
- PubChem database
Materials and methods
Test guideline
- Qualifier:
- equivalent or similar to guideline
- Guideline:
- EU Method C.4-F (Determination of the "Ready" Biodegradability - MITI Test)
- GLP compliance:
- not specified
Test material
- Reference substance name:
- Dichloroacetyl chloride
- EC Number:
- 201-199-9
- EC Name:
- Dichloroacetyl chloride
- Cas Number:
- 79-36-7
- Molecular formula:
- C2HCl3O
- IUPAC Name:
- 2,2-dichloroacetyl chloride
- Test material form:
- liquid
Constituent 1
Results and discussion
% Degradation
- Parameter:
- % degradation (O2 consumption)
- Value:
- 97
- Sampling time:
- 15 d
Applicant's summary and conclusion
- Interpretation of results:
- readily biodegradable
- Conclusions:
- Dichloroacetic acid, present at 100 mg/L, reached 97% of its theoretical BOD in 2 weeks using an activated sludge inoculum at 30 mg/L in the Japanese MITI test
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.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
