Registration Dossier

Data platform availability banner - registered substances factsheets

Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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.

Diss Factsheets

Ecotoxicological information

Short-term toxicity to aquatic invertebrates

Currently viewing:

Administrative data

Endpoint:
short-term toxicity to aquatic invertebrates
Type of information:
experimental study
Adequacy of study:
other information
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: guideline study without detailed documentation

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
1999
Report date:
1999

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
EU Method C.2 (Acute Toxicity for Daphnia)
GLP compliance:
no

Test material

Constituent 1
Chemical structure
Reference substance name:
2,2,4,6,6-pentamethylheptane-4-thiol
EC Number:
296-714-7
EC Name:
2,2,4,6,6-pentamethylheptane-4-thiol
Cas Number:
93002-38-1
Molecular formula:
C12H26S
IUPAC Name:
2,2,4,6,6-pentamethylheptane-4-thiol
Details on test material:
- Name of test material (as cited in study report): Tert. Dodecylmercaptan
- CAS No. as cited in study report: 25103-58-6 (tert. dodecanethiol), but the test material was material as defined in section 1 (CAS 93002-38-1). Therefore the new CAS number 93002-38-1 was assigned.

Sampling and analysis

Analytical monitoring:
no

Test organisms

Test organisms (species):
Daphnia magna
Details on test organisms:
Daphnia magna STRAUS
Clone from the German health authority.

Study design

Test type:
static
Water media type:
freshwater
Total exposure duration:
48 h

Test conditions

Test temperature:
20.3 °C
pH:
8.2 - 8.5
Dissolved oxygen:
8.1 mg/l

Results and discussion

Effect concentrations
Duration:
48 h
Dose descriptor:
EC0
Effect conc.:
>= 0.25 mg/L
Nominal / measured:
nominal
Conc. based on:
test mat.
Basis for effect:
mobility

Applicant's summary and conclusion

Executive summary:

Following the EU Method C.2 (Acute Toxicity for Daphnia) the test item did not evoke acute adverse effects towards daphnids up to its water solubility limit (Bayer AG 1999).