Registration Dossier
Registration Dossier
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EC number: 224-698-3 | CAS number: 4454-05-1
Additional ecotoxological information
Administrative data
- Endpoint:
- additional ecotoxicological information
- Adequacy of study:
- key study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: screening test meets basic scientific principles
Data source
Referenceopen allclose all
- Title:
- No information
- Author:
- BASF AG, Department of Product Safety, unpublished screening test, 00/0598-2, 25.11.2002
- Title:
- No information
- Author:
- Weyers, A., BUA-Büro Ökotoxikologie, TU Dresden, unpublished calculations, 30.01.2003
Materials and methods
Test material
- Reference substance name:
- 3,4-dihydro-2-methoxy-2H-pyran
- EC Number:
- 224-698-3
- EC Name:
- 3,4-dihydro-2-methoxy-2H-pyran
- Cas Number:
- 4454-05-1
- Molecular formula:
- C6H10O2
- IUPAC Name:
- 2-methoxy-3,4-dihydro-2H-pyran
Constituent 1
Results and discussion
Any other information on results incl. tables
Memo: screening test (w/o algae) to determine the evaporation of 2-methoxy-2,3-dihydro-4H-pyran closely following the test conditions of the acute toxicity test to algae (BASF AG, Department of Ecology, 2/0012/88, 15.07.1988)
RS-Freetext:
- calculated test concentration at test start:
125 mg/l 2-methoxy-2,3-dihydro-4H-pyran ~ 78,8 mg/l TOC (calculation based on the following ThOC-value: 630 mg carbon/1000 mg 2-methoxy-2,3-dihydro-4H-pyran)
- measurements:
time TC [mg/l] TIC [mg/l] TOC recovery
[h] 1. 2. mean 1. 2. mean [mg/l] rate [%]
0 83.1 83.1 83.1 6.3 6.3 6.3 76.8 98
24 37.5 37.4 37.5 6.7 6.6 6.7 30.8 39.1
48 22.5 22.5 22.5 6.5 6.5 6.5 16 20.3
72 18.2 18.5 18.4 6.3 6.2 6.3 12.1 15.4
(TC = total carbon, TIC = total inorganic carbon, TOC = total organic carbon)
- recovery rates:
ca. 15.4 % (based on measured TOC-value after 72 h)
ca. 56.7 % (arithm. mean: based on measured TOC-values after 0 h and 72 h)
ca. 43.2 % (arithm. mean: based on all measured TOC-values over 72 h)
33.08 % (geometric mean: based on all measured TOC-values over 72 h)
Applicant's summary and conclusion
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.
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