Registration Dossier

Data platform availability banner - registered substances factsheets

Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Hazard for aquatic organisms

Freshwater

Hazard assessment conclusion:
PNEC aqua (freshwater)
PNEC value:
0.1 mg/L
Assessment factor:
1 000
Extrapolation method:
assessment factor
PNEC freshwater (intermittent releases):
1 mg/L

Marine water

Hazard assessment conclusion:
PNEC aqua (marine water)
PNEC value:
0.01 mg/L
Assessment factor:
10 000
Extrapolation method:
assessment factor
PNEC marine water (intermittent releases):
0.1 mg/L

STP

Hazard assessment conclusion:
PNEC STP
PNEC value:
32 mg/L
Assessment factor:
10
Extrapolation method:
assessment factor

Sediment (freshwater)

Hazard assessment conclusion:
PNEC sediment (freshwater)
PNEC value:
0.397 mg/kg sediment dw
Extrapolation method:
equilibrium partitioning method

Sediment (marine water)

Hazard assessment conclusion:
PNEC sediment (marine water)
PNEC value:
0.04 mg/kg sediment dw
Extrapolation method:
equilibrium partitioning method

Hazard for air

Air

Hazard assessment conclusion:
no hazard identified

Hazard for terrestrial organisms

Soil

Hazard assessment conclusion:
PNEC soil
PNEC value:
0.021 mg/kg soil dw
Extrapolation method:
equilibrium partitioning method

Hazard for predators

Secondary poisoning

Hazard assessment conclusion:
no potential for bioaccumulation

Additional information

Conclusion on classification

Degradation

Biodegradation: not readily biodegradable; 19-20% biodegradation within 28 days (based on RA from methyl-N-{[dimethoxy(methyl)silyl]methyl}carbamate CAS 23432-65-7)

Hydrolysis half-life: 4 h at pH 7

Bioaccumulation

Methyl-N-[3-(trimethoxysilyl)propyl]carbamate: Log Kow 0.8 (QSAR)

Methyl-N-[3-(trihydroxysilyl)propyl]carbamate: Log Kow -2.3 (QSAR)

 

Aquatic acute toxicity

For fish: LC50 (96 h): > 100 mg/L (Oncorhynchus mykiss) 

For aquatic invertebrates: EC50 (48 h): > 100 mg/L (Daphnia magna) 

For algae/aquatic plant: EC50 (72 h) =117.4 mg/L growth rate (Desmodesmus subspicatus) (based on RA from methyl-N-{[dimethoxy(methyl)silyl]methyl}carbamate CAS 23432-65-7)

 

Aquatic chronic toxicity

For fish: no data available on the substance.

For aquatic invertebrates: no data available on the substance.

For algae/aquatic plant: NOEC (72 h) = 33.5 mg/L growth rate (Desmodesmus subspicatus) (based on RA from methyl-N-{[dimethoxy(methyl)silyl]methyl}carbamate CAS 23432-65-7)

 

Classification assigned according to CLP

The substance is not readily biodegradable and has a low potential for bioaccumulation (log Kow < 3). Acute toxicity data for the substance itself and an appropriate read across substance are available for three trophic levels. All L/EC50 values are > 100 mg/L. Chronic data for algae are available and the NOEC is > 1 mg/L. Therefore, the substance is not classified for the environment according to the consolidated version of Regulation (EC) No 1272/2008 and further amendments (ATPs).