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Ecotoxicological information

Endpoint summary

Administrative data

Description of key information

Additional information

For the test item Reaction product of adipic acid and sebacic acid and isotridecan-1 -ol is no study available. However, it is likely that the studies conducted on the component diisotridecyl adipate and the read-across substance bis(2 -ethylhexyl) adipate are valid for Reaction product of adipic acid and sebacic acid and isotridecan-1 -ol (please see justification for read-across).

Short-term-toxicity to fish

The acute lethal toxicity of the component Diisotridecyladipate to Poecilia reticulata (Guppy) was investigated under static exposure conditions over a period of 96 h.

The absence of mortality provides that the LL50 at 96 h is > 100 mg/l (nominal concentration) (Häner/Panolin AG, 1998).

The 96-h LC50 with sheepshead minnows in salt water was determined to be > 5000 mg/L (BenKinney/Mobil, 1986).

 

Long-term toxicity to fish

 

Waiving argument:

Long-term toxicity testing of fish does not appear scientifically necessary as data for a more sensitive species of a different trophic level is available (REACH Annex XI Nr. 1). Additionally during the aquatic short-term studies (fish, Daphnia and Algae) no toxic symptoms or mortality were observed in the treated group until the limit of water solubility.

 

Short-term toxicity to aquatic invertebrates

 

Based on the results of the key study it can be concluded that the 24 and 48 h EL50 values of the component Diisotridecyl adipate is >1000 mg/l nominal concentrations (Häner/Panolin, 1998).

Long-term toxicity to aquatic invertebrates

 

In a 21 day Daphnia magna reproduction test with the analogue substance bis-(2-ethylhexyl) adipate as test substance, a NOEC of >= 0.77 mg/L was determined (highest dose tested). Toxic effects on reproduction and mortality of adult daphnids are above the water solubility of the test substance (Huels AG, 1996a). This result is confirmed by another valid study of Robillard et al., 2008. Therefore it is likely that the less water soluble substance Reaction product of adipic acid and sebacic acid and isotridecan-1 -ol is also not toxic to aquatic invertebrates in the range of its water solubility.

 

Toxicity to aquatic algae and cyanobacteria

 

In an algal inhibition test with the component diisotridecyl adipate as test substance it can be concluded that the EL50 (24 -72 h) based on the growth rate is > 1000 mg/l nominal concentration and the NOEL based on the growth rate is >= 100 mg/l nominal concentration.

 

Toxicity to microorganisms

An activated sludge respiratory inhibition test was conducted with the supporting substance di-2-ethylhexyl adipate. A NOEC of 350 mg/L was determined (EC50 >350 mg/L) (Huels AG, 1996b)

 

All effect levels determined are far above the water solubility of the test substances. It can concluded that Reaction product of adipic acid and sebacic acid and isotridecan-1 -ol does not show toxic effects to aquatic organisms within its water solubility (< 0.001 mg/L).