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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 203-497-4 | CAS number: 107-51-7
Monitoring data
Administrative data
- Endpoint:
- monitoring data
- Type of information:
- experimental study
- Adequacy of study:
- supporting study
- Study period:
- 2011
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: The study was well documented and meets generally accepted scientific principles, but was not conducted in compliance with GLP.
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 013
- Report date:
- 2013
Materials and methods
Test material
- Reference substance name:
- Octamethyltrisiloxane
- EC Number:
- 203-497-4
- EC Name:
- Octamethyltrisiloxane
- Cas Number:
- 107-51-7
- Molecular formula:
- C8H24O2Si3
- IUPAC Name:
- 2,2,4,4,6,6-hexamethyl-3,5-dioxa-2,4,6-trisilaheptane
Constituent 1
Study design
- Details on sampling:
- - Geographic coordinates: Lake Pepin (natural flood plain lake of the upper Mississippi River)
- Known emission sources near sampling site: Waste water treatment plant discharges about 10 m3s-1 of treated wastewater to the Mississippi River. Point-source discharges from metropolitan areas.
- Period of sampling: Surface sediments and select biota from the aquatic food web were collected as part of a 5-year monitoring program. Sampling period: 2011-06-07 to 2011-10-05.
- Sampling: Surface sediments were collected from 12 locations using a stainless steel mini-box corer. Mayfly larvae were collected from the same 12 locations using a Ponar grab sampler. Zooplankton were collected by horizontal tow and fish were collected using gill nets.
- Sample storage before analysis: Sediment samples stored at 4°C in the dark. Mayfly larvae, zooplankton and fish were rinsed and then stored at -20°C.
- Other: Personnel were prohibited from using personal care products known to contain siloxane materials on days of sample collection.
Results and discussion
Concentration
- Country:
- United States (the)
- Location:
- Lake Pepin
- Substance or metabolite:
- substance
- Remarks on result:
- other: MDM was not present at detectable concentrations in any of the sampled matrices
Applicant's summary and conclusion
- Conclusions:
- MDM was not present at detectable concentrations in any of the sampled matrices.
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.
