Registration Dossier
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: 203-444-5 | CAS number: 106-93-4
Biodegradation in soil
Administrative data
Link to relevant study record(s)
Description of key information
The key study (Steinberg et al, 1987) was conducted in a similar manner to the OECD 307 guideline (Aerobic and Anaerobic Transformation in Soil). The registered substance reached 90% degradation at 4 days and >90% degradation at day 22.
Key value for chemical safety assessment
Additional information
Steinberg et al, 1987, was selected as the key study as it was the most recent and reliable study available. The study was conducted in a similar way to the OECD 307 guideline (Aerobic and Anaerobic Transformation in Soil). The study reported degradation values of 90% at 4 days and >90% at 22 days.
Aelion et al, 1987, Pignatello, 1986, Weintraub et al, 1986 and Wilson et al, 1986, are presented as supporting information only.
Pignatello, 1986, Weintraub et al, 1986 and Wilson et al, 1986, were allocated reliability scores of 2 according to the criteria of Klimisch et al, 1997, based upon the level of detail reported. Aelion et al, 1987, was awarded the reliability score of 4 (according to the Klimisch criteria) as insufficient data was presented for assessment of reliability.
Results from these supporting sources are summarised in the following table:
Table 1. Results of supporting studies.
| Reference | Soil | % degradation | Standard deviation | Parameter | Sampling time |
| Pignatello, 1986 | Sand (Org. C 0.24%) | 32 | 3 | Radiochem. Meas. | 99 days |
| Silty clay loam (Org. C 14%) | 76 | 2 | Radiochem. Meas. | 108 days | |
| Weintraub et al, 1986 | Sub-surface soil (Org. C not reported) | 40 | Not reported | Not reported | 7 months |
| Wilson et al, 1986 | Aquifer material maintained for methanogenic conditions (Org. C not reported) | 73 | Not reported | Test mat. Analysis | 7 weeks |
| >99 | Not reported | Test mat. Analysis | 16 weeks | ||
| Aelion et al, 1987 | Sand (Org. C not reported) | 35 | Not reported | Radiochem. Meas. | 5 days |
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.
Route: .live2