Registration Dossier

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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Administrative data

Hazard for aquatic organisms

Freshwater

Hazard assessment conclusion:
no hazard identified

Marine water

Hazard assessment conclusion:
no hazard identified

STP

Hazard assessment conclusion:
no hazard identified

Sediment (freshwater)

Hazard assessment conclusion:
no hazard identified

Sediment (marine water)

Hazard assessment conclusion:
no hazard identified

Hazard for air

Air

Hazard assessment conclusion:
no hazard identified

Hazard for terrestrial organisms

Soil

Hazard assessment conclusion:
no hazard identified

Hazard for predators

Secondary poisoning

Hazard assessment conclusion:
no potential to cause toxic effects if accumulated (in higher organisms) via the food chain

Additional information

Conclusion on classification

The substance, WS400103, is a UVCB substance composed of tall oil fatty acids condensed with diethylenetriamine (DETA) and phosphoric acid. The major part (> 90%) consists of di-amides with smaller amounts of mono-amides (< 2%) and tri-amides (< 6%). Molecular weights of the di-amides amount to approx. 616 Da, those of mono-amides to approx. 353 Da and 879 Da for tri-amides.

The neat substance (as used in the laboratory tests) is a brown solid. However, the substance during its life cycle does not exist as neat substance because it is manufactured in organic solvents and then directly diluted in organic solvents to the formulations to be marketed. The substance finally will be used as additive in organic solvent based surface coating systems and at the end will be incorporated in a polymer matrix.

The neat substance has very low water solubility (< 1 mg/L). The octanol water partition coefficient (Log10Pow) was determined to range between values of 2.8 and 4.4.

Aquatic toxicity tests were performed by preparing water accommodated fractions (WAF) with the specifically prepared neat substance. Algae were the most sensitive test organism. The WAF concentration of 3.2 mg/l was derived as NOEL. The following EL values were calculated: ELr50 (72 h) = 4.8 mg/l and ELr10 (72 h) = 1.6 mg/l.

All concentrations at which effects were observed are clearly above the analytically determined solubility of the substance in the test medium. This means that the substance did not show effects up to the limit of its water solubility.

The toxicity observed in the algae test very likely is based on the mono-amides contained in WS400103 (up to 2%). These constituents contain one C18-alkyl residue bound to the triamine DETA providing lipophilicity (membrane activity) to the molecule. The mono-amides carry one free terminal amino group; a structure known to exhibit toxicity to algae. The mono-amides have higher water solubility than di-amides and tri-amides and accordingly will be extracted from WS400103 during preparation of the WAF. However, it is also to be expected that mono-amides are more quickly biodegraded in the aquatic environment than di-amides and tri-amides.

Based on absence of effects up to its water solubility non-classification of WS400103 for aquatic toxicity is considered justified. In addition, the substance does not exist as neat substance.