Registration Dossier
Registration Dossier
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EC number: 221-066-9 | CAS number: 2996-92-1
Ecotoxicological Summary
Administrative data
Hazard for aquatic organisms
Freshwater
- Hazard assessment conclusion:
- no hazard identified
Marine water
- Hazard assessment conclusion:
- no hazard identified
STP
- Hazard assessment conclusion:
- no hazard identified
Sediment (freshwater)
- Hazard assessment conclusion:
- no hazard identified
Sediment (marine water)
- Hazard assessment conclusion:
- no hazard identified
Hazard for air
Air
- Hazard assessment conclusion:
- no hazard identified
Hazard for terrestrial organisms
Soil
- Hazard assessment conclusion:
- no hazard identified
Hazard for predators
Secondary poisoning
- Hazard assessment conclusion:
- no potential for bioaccumulation
Additional information
Conclusion on classification
Trimethoxyphenylsilane is expected to hydrolyse rapidly (DT50 = 0.4 hours at 25°C) and the silanol hydrolysis product is not readily biodegradable. Trimethoxyphenylsilane is not classified for the environment in the EU according to Regulation (EC) No 1272/2008 because good quality data for the analogue substance, trichloro(phenyl)silane (98-13-5), have been read across. Both the target and source substances share the same silanol hydrolysis product, phenylsilanetriol. The other, alcohol hydrolysis products are methanol (target) and hydrochloric acid (source), respectively. Methanol and hydrochloric acid are not expected to be hazardous at concentrations relevant to aquatic toxicity studies.
Experimental results indicate that the silanol hydrolysis product is not hazardous up to a concentration of 100 mg/L (nominal).
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
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