3-aminopropyldiethylamine

Endpoint summary

Additional information

Chemicals can reach the soil via several routes:

1.                 Application of sewage sludge in agriculture.

Diethylaminopropylamine (DEAPA)

when released into the sewage of a plant production or of a downstream’s user plant, are treated with other substances in dedicated sewage treatment plants. The activated sludge stemmed from these sewage treatment plants are then extracted and treated as chemical waste. Industrial sludge are not applied natural soils. The sludge are incinerated, contained or reclaimed.

From the production plant, the release of DEAPA into the sewage is very limited, not to say completely negligible. So it is expected that DEAPA won’t be present in sludge.

DEAPA is mainly used as reactive processing aid and intermediate.

As a consequence, we can assume that soil is not exposed to DEAPA via the application of sewage sludge in agriculture.

2.                 Direct application of chemicals.

Based on the uses inventoried for DEAPA we can consider that there isno direct application of these substances on the soil compartment. Indeed, all uses are within industrial settings.

3.                 Deposition from the atmosphere.

Deposition from the atmospheric compartment involves volatilization, vaporization or direct release of a considered substance into the atmosphere. On plant production and on downstream's user plant, releases to atmosphere are controlled. The main releases are fugitive releases and are considered negligible. Thus we may assume that deposition on soil from the atmosphere is unexpected.

 

Based on these arguments no test is proposed for the soil compartment.

 

Futhermore, according to the guidance on information requirements and chemical safety assessment - chapter R10: characterisation of dose [concentration]-response for environment (ECHA May 2008), in the absence of any ecotoxicological data for terrestrial organisms, the PNECsoil may be calculated using the equilibrium partitioning method (EPM), following the equation of ECHA's Guidance on information requirements and chemical safety assessment, chapter R10, "Characterisation of dose [concentration]-response for environment" (May 2008, p. 40) and the data of R16: Environmental exposure assessment (v3.0, Feb. 2016). Koc was estimated with the Kocwin v2.00 module from the Episuite software (v4.11). Koc = 103.4 L/kg ; Solubility = 400 g/L ; MW = 130 g/mol ; Vapor pressure = 200 Pa ; PNECwater = 0.2 mg/L ; PNECsoil = 0.4403 mg/kg dry weight (a conversion factor of 1.134 was used in order to convert the PNEC in dry weight). DEAPA does not present any high adsorption behaviour (Log Koc < 3) or persistence (DEAPA is readily biodegradable) and is not very toxic to aquatic organisms. Following the integrated testing strategy for soil risk assessment of the guidance on information requirements and chemical safety assessment - chapter R7c (Nov 2014, v2.0, pp.143-145), DEAPA is therefore classified into the hazard category 1 for soil risk assessment. The guidance indicates that the EPM method is sufficient in itself for a screening assessment. Following this screening approach, since RCR soil are all inferior to 1 in all exposure scenarii, no further testing on terrestrial organisms is required for REACH regulatory purposes.