Registration Dossier

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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Administrative data

Endpoint:
extended one-generation reproductive toxicity - basic test design (Cohorts 1A, and 1B without extension)
Type of information:
experimental study planned
Study period:
The test will be conducted after a decision on the requirement to carry out the proposed test has been taken according to the procedure laid down in Regulation (EC) 1907/2006 and a deadline to submit the information required has been set by the Agency.
Justification for type of information:
TESTING PROPOSAL ON VERTEBRATE ANIMALS
NON-CONFIDENTIAL NAME OF SUBSTANCE: hexadecyltrimethoxysilane (CAS 16415-12-6)
CONSIDERATIONS THAT THE GENERAL ADAPTATION POSSIBILITIES OF ANNEX XI OF THE REACH REGULATION ARE NOT ADEQUATE TO GENERATE THE NECESSARY INFORMATION:
- Available GLP studies - none for the reproductive toxicity endpoint
- Available non-GLP studies - none for the reproductive toxicity endpoint.
- Historical human data - no data.
- (Q)SAR - no data.
- In vitro methods - no validated alternative in vitro methods are available.
- Weight of evidence - No information (QSAR, in vitro data, repeated dose or fertility data) available which is suitable to assess developmental toxicity in a weight of evidence approach.
- Grouping and read-across – No suitable read-across options are available.
CONSIDERATIONS THAT THE SPECIFIC ADAPTATION POSSIBILITIES OF ANNEXES VI TO X (AND COLUMN 2 THEREOF) OF THE REACH REGULATION ARE NOT ADEQUATE TO GENERATE THE NECESSARY INFORMATION:
- This test cannot be waived based on carcinogenicity, germ cell mutation, toxicokinetics or exposure data, or classification for reproduction or development.

FURTHER INFORMATION ON TESTING PROPOSAL IN ADDITION TO INFORMATION PROVIDED IN THE MATERIALS AND METHODS SECTION: an Extended One-Generation Reproductive Toxicity Study is proposed.

Data source

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
OECD Guideline 443 (Extended One-Generation Reproductive Toxicity Study)
GLP compliance:
yes
Justification for study design:
according to OECD guideline 443

Test material

Constituent 1
Chemical structure
Reference substance name:
Hexadecyltrimethoxysilane
EC Number:
240-464-3
EC Name:
Hexadecyltrimethoxysilane
Cas Number:
16415-12-6
Molecular formula:
C19H42O3Si
IUPAC Name:
hexadecyltrimethoxysilane

Test animals

Species:
rat
Sex:
male/female

Administration / exposure

Route of administration:
oral: gavage

Results and discussion

Applicant's summary and conclusion