Registration Dossier
Registration Dossier
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EC number: 200-076-7 | CAS number: 51-03-6
Other distribution data
Administrative data
- Endpoint:
- other distribution data
- Type of information:
- experimental study
- Adequacy of study:
- supporting study
- Study period:
- 1995
- Reliability:
- 1 (reliable without restriction)
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 1 995
- Report date:
- 1995
Materials and methods
- Principles of method if other than guideline:
- Method: other: USEPA Guideline, Subdivision N, Section 163-1
- Type of study:
- other: Soil column leaching
- Media:
- other: saturated soil column
Test material
- Reference substance name:
- 2-(2-butoxyethoxy)ethyl 6-propylpiperonyl ether
- EC Number:
- 200-076-7
- EC Name:
- 2-(2-butoxyethoxy)ethyl 6-propylpiperonyl ether
- Cas Number:
- 51-03-6
- Molecular formula:
- C19H30O5
- IUPAC Name:
- 2-(2-butoxyethoxy)ethyl 6-propylpiperonyl ether
Constituent 1
Results and discussion
Any other information on results incl. tables
RS-Freetext:
In the non-aged leaching study, between 0.2-1.3 % of the applied Piperonyl
Butoxide was eluted from columns of non-aged sandy loam, silt loam and clay
loam soil so that distribution coefficients (Kd) could not be calculated. For
sand, which had low organic carbon content, 74 % of the applied 14C-Piperonyl
Butoxide was eluted and the Kd was determined to be 0.42 mL/g. Consequently,
Piperonyl Butoxide showed a low mobility in 3 of 4 soil types used (clay loam,
silt loam, sandy loam). The compound was very mobile on the sand.
In the aged leaching study, approximately 55 % of the applied Piperonyl Butoxide
had degraded by the end of the 18-day aging period. A mean of 9 % of the
applied radioactivity was eluted from the aged soils with a mean of 80 %
remaining on the columns, indicating sorption of Piperonyl Butoxide and its
degradates during aging. Mainly non-extractable degradation products evolved
that were not mobile (24 %). Some mineralization also occurred (circa 4 %).
The aged residue data showed that weakly sorbed acidic degradates of Piperonyl
Butoxide were leached in small quantities but that the majority of radioactivity
was retained within the soil column.
Ka |
Not stated |
Kd |
0.42 mL/g (sand soil) |
Kaoc |
Not stated |
Ka/Kd |
Not stated |
Degradation products (% of a.s.) |
CO2(4 %),3,4-methylenedioxy-6-propyl-benzoic acid (7 %),non-extractable residues (24 %, aged soil columns) |
Applicant's summary and conclusion
- Conclusions:
- 14C-Piperonyl Butoxide showed a low mobility in 3 of 4 soil types used (clay loam, silt loam, sandy loam). The compound was very mobile on the sand. Furthermore, Piperonyl Butoxide degraded rapidly during 18 days aging under aerobic conditions on sandy loam soil. About 45 % of the applied radioactivity present as Piperonyl Butoxide could be detected after 18 days. The minor 14C-degradates were slightly more mobile on soil columns than the parent compound.
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