Registration Dossier
Registration Dossier
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EC number: 229-912-9 | CAS number: 6834-92-0
Additional information on environmental fate and behaviour
Administrative data
- Endpoint:
- additional information on environmental fate and behaviour
- Type of information:
- read-across based on grouping of substances (category approach)
- Adequacy of study:
- other information
- Justification for type of information:
- Refer to category justification provided in IUCLID section 13.
Cross-reference
- Reason / purpose for cross-reference:
- read-across source
Reference
- Endpoint:
- additional toxicological information
- Type of information:
- other: General exposure considerations
- Adequacy of study:
- other information
- Qualifier:
- no guideline required
The average intake of silicon is 20-50 mg total Si/d
(Pennington, 1991). An estimation of 0.31 mg Si/kg bw/d in
females and 0.53 mg Si/kg bw/d in males made in an American
study, is representative for the intake in the Western
world. While the highest concentrations of total silicon are
found in seafood, eggs and diary products; the main dietary
sources are cereals and beverages.
Data source
Materials and methods
Test material
- Reference substance name:
- Disodium metasilicate
- EC Number:
- 229-912-9
- EC Name:
- Disodium metasilicate
- Cas Number:
- 6834-92-0
- Molecular formula:
- H2O3Si.2Na Soluble Silicates Category
- IUPAC Name:
- disodium oxosilanediolate
Constituent 1
Results and discussion
Any other information on results incl. tables
RM-Freetext:
Polymerisation-Depolymerisation:
Upon dilution of concentrated commercial silicate solutions
with water, the highly cross-linked polysilicate ions
depolymerize rapidly to monosilicate ions, the extent of
depolymerisation depending on the dilution factor.
Applicant's summary and conclusion
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