Registration Dossier
Registration Dossier
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EC number: 211-656-4 | CAS number: 681-84-5
PBT assessment
Administrative data
PBT assessment: overall result
- PBT status:
- the substance is not PBT / vPvB
- Justification:
Tetramethyl orthosilicate hydrolyses very rapidly in contact with water to methanol and silicic acid and therefore the substance does not meet the criteria for PBT or vPvB. Methanol is readily biodegradable and so is not persistent. Silicic acid is inorganic and biodegradation is not relevant. However, silicic acidis the water soluble form of inorganic silicon will enter the natural biogeochemical cycle for silicon, and therefore is not considered Persistent (P).
Silicic acid does not meet the criteria for B or T.
Therefore, the substance does not meet the criteria for PBT or vPvB.
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