Registration Dossier
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EC number: 800-984-9 | CAS number: 1428547-35-6
Toxicity to soil macroorganisms except arthropods
Administrative data
Link to relevant study record(s)
Description of key information
NOEC reproduction of 200 mg/kg soil has been obtained for hydrogenated tallow alkyl amine.
These data have been used as read-across for the registered substance. They are then converted to the corresponding value of the salt, resulting to a NOEC of 416 mg/kg soil (MW of Amines, hydrogenated tallow = 263, MW of the registered substance = 547.5 (263 hydrogenated tallow alkyl amine + 284.5 acid stearic)).
Key value for chemical safety assessment
- Long-term EC10, LC10 or NOEC for soil macroorganisms:
- 416 mg/kg soil dw
Additional information
Data available for primary alkyl amines
Acute toxicity
Noack (1999) determined the acute effects of tallow alkyl amine (CAS 61790 -33 -8) on earthworm Eisenia fetida according to OECD Guideline 207. Different concentrations of tallow alkyl amine (100, 180, 320, 580, 1000 mg/kg dry weight) were applied once at the beginning of the test. No significant mortality was observed in any of the tested concentrations after 14 days of exposure. As test result a LC50 > 1000 mg/kg dry weight was obtained from this study.
Long-term toxicity
The effects of amines, hydrogenated tallow (CAS 61788-45-2) on mortality, biomass and reproduction of Eisenia fetida were tested according to OECD 222 under a static exposure for 56 days (Noack, 2006). Natural soil (Lufa 2.2) was used as substrate, and the different concentration of the substance mixed with the substrate. The concentrations applied were 50, 100, 200, 500, and 1,000 mg/kg soil dry weight. In addition tests using control and vehicle control were performed.
The test is valid without restrictions and the results are reliable. After 28 days of exposure, no effects on survival of the adult worms were observed in all concentrations. After the following four weeks, the reproduction rate (average number of juveniles) was significantly reduced in the concentrations of 500 and 1,000 mg/kg soil compared to the control. Hence, the LOEC is 500 mg/kg soil and the NOEC 200 mg/kg soil. This NOEC can be used as a chronic endpoint representing heterotrophs (consumer) in the terrestrial environment.
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