Registration Dossier
Registration Dossier
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EC number: 940-734-7 | CAS number: -
Endpoint summary
Administrative data
Description of key information
Additional information
Reliable terrestrial toxicity data with earthworms, honeybees and higher plants are available for Hydrocarbons, C18-C24, isoalkanes, <2% aromatics.
The relevant data are:
Soil macroorganisms excluding arthropods:
A 28-day E(L)C50 value of >2000 mg/kg dry soil and NOEC value of 2000 mg/kg dry soil (nominal concentrations) (highest concentration tested) have been determined for effects of the registration substance on survival and growth of Eisenia foetida. These results are from the Eisenia foetida reproduction study.
A 56-day EC50 value of 780 mg/kg dry soil and NOEC value of 74 mg/kg dry soil (nominal concentrations) have been determined for the effects of the registration substance on reproduction of Eisenia foetida.
Terrestrial arthropods:
A 48-hour LD50 value of >100 μg product/bee and 48-hour NOEL value of 100 μg product/bee (nominal concentration) (highest concentration tested) have been determined in an oral test for the effects of the registration substance on mortality of Apis mellifera.
A 48-hour LD50 value of >100 μg product/bee and 48-hour NOEL value of 100 μg product/bee (nominal concentration) (highest concentration tested) have been determined in a contact test for the effects of the registration substance on mortality of Apis mellifera.
Terrestrial plants:
21-day EC50 values of >1000 mg/kg dry soil and NOEC values of 1000 mg/kg dry soil (nominal concentrations) (highest concentration tested) have been determined for the effects of the registration substance on seedling emergence, growth and phytotoxicity of wheat, turnip, buckwheat, dwarf bean, ryegrass and tomato.
Hydrocarbons, C18-C24, isoalkanes, <2% aromatics has been tested in a study to determine the potential effects of the test substance on vegetative vigour of higher plants. The study was conducted according to a protocol which was based on the procedures specified in OECD Guideline 227 (OECD, 2006) (Terrestrial Plants Test: Vegetative Vigour Test) (AgroChemex Ltd 2020).
Application of the substance at rates of 0, 185, 556, 1667, 5000 and 15000 mL/ha, for a period of 21 days, had no effect on the vigour of the species tested. The no observable effect rate (NOER) and the ER50 values were determined for dry weight, height and survival of onion, maize, sugar beet, oil seed rape, soybean and tomato. The NOER and ER50 values for all parameters and for each species were NOER: ≥15000 mL/ha, ER50: >15000 mL/ha.
Supporting data for the terrestrial compartment
In support of the data with the registered substance, Hydrocarbons, c18 -c24, isoalkanes, <2% aromatics (GS310), toxicity studies for related GTL-derived substances in the relevant carbon number range are available with soil macroorganisms (Eisenia foetida), terrestrial plants (Glycine max, Lycopersicon esulentum, Sinapis alba, Avena sativa, Lolium perenne) and soil microorganisms.
GTL Gasoil
For GTL Gasoil a short-term and a long-term soil organism toxicity study are available for earthworms (E. foetida), which indicate that the test substance is of low toxicity: NOEC (14-d and 28-d) ≥1000 mg/kg dw, based on mortality and reproduction (Priestly, 2010c and Schmidt, 2011a, respectively). GTL Gasoil was tested with a series of plants in growth studies which also indicated the low toxicity of the test substance. The lowest EC50 (21-day) was 990 mg/kg dw with L. perenne based on growth, while the lowest NOEC (21-d) was 560 mg/kg dw recorded with S. alba also based on growth (Goodband, 2011b). A nitrogen transformation test with GTL Gasoil resulted in an EC50 (28-d) value of 320 mg/kg and a NOEC (28-d) of 180 mg/kg based on nitrate formation rate (Clarke, 2010a).
GTL Base Oil Distillates
Several studies with terrestrial organisms are available with GTL Base Oil Distillates. A short-term (Priestly, 2010d) and a long-term (Schmidt, 2011b) toxicity study are available with the earthworm Eisenia fetida. The studies reported respectively a 14-day LC50 value of >1000 mg/kg dw and a 4-week NOEC value of ≥1000 mg/kg dw. In addition, a nitrogen transformation test resulted in an EC50 (28-day) value of >1000 mg/kg based on nitrate formation rate (Clarke, 2010b).
Further, a plant seedling emergence and growth test is available in which GTL Base Oil Distillates was tested in five plant species: three dicotyledonous species, 1) soybean (Glycine max), 2) tomato (Lycopersicon esulentum) and 3) mustard (Sinapis alba) and two monocotyledonous species, 1) oat (Avena sativa) and 2) perennial ryegrass (Lolium perenne). No effects were recorded after 21 or 22 -days exposure up to a concentration of 1000 mg/kg dw (Goodband, 2011e).
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