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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Toxicity to terrestrial arthropods

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Administrative data

Endpoint:
toxicity to terrestrial arthropods: long-term
Type of information:
experimental study
Adequacy of study:
supporting study
Reliability:
4 (not assignable)
Rationale for reliability incl. deficiencies:
documentation insufficient for assessment
Remarks:
Insufficient information to determine reliability

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
1983

Materials and methods

Principles of method if other than guideline:
The purpose of the study was to evaluate the inhalation toxicity of the test substance.
GLP compliance:
no

Test material

Constituent 1
Chemical structure
Reference substance name:
Hexamethyldisiloxane
EC Number:
203-492-7
EC Name:
Hexamethyldisiloxane
Cas Number:
107-46-0
Molecular formula:
C6H18OSi2
IUPAC Name:
trimethyl[(trimethylsilyl)oxy]silane

Test organisms

Test organisms (species):
other: other not soil dwelling arthropod
Details on test organisms:
other not soil dwelling arthropod

Test conditions

Details on test conditions:
Groups of three crickets and three mealworms (Tenebrio sp.) were exposed to single doses of the test substance in 0.8 to 1.2 l flasks. Observations were recorded for 24 to 48 hrs after exposure. 
Nominal and measured concentrations:
single doses of the test substance in 0.8 to 1.2 l flasks

Results and discussion

Effect concentrations
Duration:
48 h
Dose descriptor:
LC50
Effect conc.:
> 2 000 ppm
Basis for effect:
mortality

Applicant's summary and conclusion