Reaction mass of ethoxylated N-oleyl-1,3-propanediamine, hydrofluorides of and ethoxylated N-palmityl-1,3-propanediamine, hydrofluorides of and ethoxylated N-stearyl-1,3-propanediamine, hydrofluorides of and olaflur

Endpoint summary

Additional information

Abiotic degradation in water (Hydrolysis)

Based on the results obtained in the pre-test on hydrolysis (shown in IUCLID section 5.1.2) (5d at 50 °C), Olaflur can be characterised as stable in water at pH 4, 7 and 9.

Biodegradation

The study on ready biodegradability was performed with the free amine base of the fluoride salt (= Olaflur), the alkoxylated amine Ethanol, 2,2´-[[3-[(2-hydroxyethyl)amino]propyl]imino] bis-, N-tallow alkyl derivs. (CAS no. 90367-27-4). Under environmental conditions, biodegradation of alkylamines or its salts is predominantly determined by the solubility of the amine component and potential bacteriotoxicity. Solubility is dependent on the pH value of the medium. Therefore, results for amines allow also a conclusion for the respective salts (Olaflur represents the fluoride salt of the amine) (see also APAG "INFLUENCE OF COUNTER IONS ON THE BIODEGRADABILITY OF SALTS OF FATTY AMINE DERIVATIVES AND QUATERNARY AMMONIUM SALTS").

A CO2 -Evolution-Test was performed according to OECD guideline 301B. Ethanol, 2,2´-[[3-[(2-hydroxyethyl)amino]propyl]imino] bis-, N-tallow alkyl derivs. was tested at a concentration of nominally 15.7 mg test item/L, the test was left running for 28 days. Based on the results obtained, the free amine base of the fluoride salt (= Olaflur), can be considered as readily biodegradable although the 10-day-window-criteria were not 100% fulfilled. The 10-day-window-criteria are not applicable for substances like Olaflur or its amine component, as it represents a mixture of substances with potentially different bacteriotoxic profiles, resulting in different lag-phases. This approach has been accepted by authorities e.g. in the field of surface active substances (see also APAG "10-DAY TIME WINDOW; AN UNSUITABLE PASS/FAIL CRITERION FOR FATTY AMINE DERIVATIVES"). In summary, the amine base and consequently Olaflur can also be considered as ready biodegradable.

Bioaccumulation

In accordance with column 2 of REACH Annex IX, a bioaccumulation test in aquatic species (required in section 9.3.2) does not need to be conducted as Olaflur has a low potential for bioaccumulation.

As shown in IUCLID section 4.7 the log Pow was estimated to be 1.94 indicating that the test substance has no potential for bioaccumulation. This is supported by the result obtained using the estimation program BCFBAF v.3.00, part of EPIWIN, for BCF calculation. On basis of the log Pow (1.94) a BCF of 8.851 L/kg was calculated. Hence, no further information concerning bioconcentration or bioaccumulation is required.

Transport and distribution

Solubility of Olaflur in water is good (164 g/L), the log Pow determined to be 1.94 (shown in IUCLID section 4.8 resp. 4.7). The vapour pressure of the solvent-free Olaflur can be estimated to be < 0.1 mbar at 20 °C.

The adsorption and desorption behaviour of Olaflur was not determined, instead the adsorption coefficient (Koc) was estimated from the log Pow using the calculation program KOCWIN v2.00. Based on the log Pow of 1.94 a log Koc of 1.0446 (KOCWIN v2.00) was calculated indicating a low absorption of the material to sediment. In accordance with column 2 of REACH Annex VIII, an Adsorption-/Desorption-Screening test (required in section 9.3.1) does not need to be conducted as Olaflur has a low potential for adsorption (log Koc = 1.0446).