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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Hazard for aquatic organisms

Freshwater

Hazard assessment conclusion:
PNEC aqua (freshwater)
PNEC value:
0.08 mg/L
Assessment factor:
50
PNEC freshwater (intermittent releases):
2.25 mg/L

Marine water

Hazard assessment conclusion:
PNEC aqua (marine water)
PNEC value:
0.008 mg/L
Assessment factor:
500

STP

Hazard assessment conclusion:
PNEC STP
PNEC value:
65 mg/L
Assessment factor:
10

Sediment (freshwater)

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

Sediment (marine water)

Hazard assessment conclusion:
PNEC sediment (marine water)
PNEC value:
0.007 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:
0.017 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

The following reliable data is available for environmental classification of tetra-n-butyl titanate, polymer with water:

Acute Aquatic Toxicity:

Short-term toxicity to fish:

•96-h LC50 (mortality) to Pimephales promelas, 1825 mg/L based on measured/nominal concentrations (read-across from n-butanol; Mattson et al. 1976 and Veith et al. 1983)

Short term toxicity to invertebrates:

•48-hour LC50 (immobilisation) to Daphnia magna, 1300 mg/L based on nominal concentrations (read-across from 2 -methylpropan-1-ol; Elnabarawy et al. 1986)

Toxicity to algae:

•The 96-h EC50 (growth rate) to Pseudokirchnerella subcapitata, 225 mg/l (95% CL: 204 -246 mg/l) based on measured concentrations (read-across from n-butanol; UNEP 2004)

Conclusion: No acute aquatic toxicity as the lowest short-term toxicity value of 225 mg/l is greater than 1 mg/l.

Chronic aquatic toxicity:

•21-d NOEC (reproduction) to Daphnia magna, 4 mg/L based on nominal concentrations (read-across from 2 -methylpropan-1-ol; Kuehn et al. 1989)

•The 96-h EC10 to Pseudokirchnerella subcapitata, 134 mg/l (95% CKL: 124 -167 mg/l) based on measured concentrations (read-across from n-butanol; UNEP 2004)

Degradation:

Abiotic degradation (hydrolysis): Hydrolytically unstable, Half-life less than 2 hours at 25 deg. C and at all pH (OECD 111)

Main organic decomposition product (n-butanol) is readily biodegradable (> 92 % at 20-d, Price et al. 1974) and possess low aquatic toxicity.

Conclusion: rapidly degradable.

Bioaccumulation: Log Kow for the main degradation product (n-butanol) is 0.84. Not possible to determine for the target substance because of rapid hydrolysis.

Conclusion: No chronic aquatic toxicity as the lowest chronic toxicity value of 4 mg/l (NOEC daphnia) is greater than 1 mg/l, substance is rapidly degradable, and the degradation products have low potential for bioconcentration and bioaccumulation.

Environmental classification:

In accordance with EC Regulation 1272/2008 (CLP):

Not classified as hazardous

In accordance with DSD (Directive 67/548/EEC):

Not classified as hazardous