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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Environmental fate & pathways

Endpoint summary

Administrative data

Description of key information

Direct and indirect exposure of environmental compartments is highly unlikely, abiotic and biotic degradation are unlikely to occur and transport and distribution in the environment is practically negligible.

Additional information

Environmental exposure of HAT-ISO is practically negligible, as:

1) HAT-ISO is manufactured and formulated in closed systems. Thus, direct and indirect exposure of the aquatic or soil compartments during manufacturing and formulation is practically negligible.

2) Use of formulated HAT-ISO is also unlikely to result in direct and indirect exposure to the aquatic or soil compartments. During use HAT-ISO is included in three-dimensional matrices of polymeric, resinous material and completely retained. Therefore, the direct and indirect release of HAT-ISO into the aquatic or soil compartments is practically negligible.

Exposure of HAT-ISO to the atmospheric compartment is practically negligible. The vapour pressure of HAT-ISO was determined to be below 1.6E-04 Pa at 20 °C (293.15 K).

For more details on exposure assessment see the risk assessment report included in section 13.

HAT-ISO is highly insoluble in water. The solubility was determined to be 0.0497 mg/L at 20 °C. Thus, availability of HAT-ISO in the aquatic environment is practically negligible. Due to HAT-ISO being insoluble, hydrolysis in water is not likely to occur and there is no hazard to the environment from dangerous hydrolysis products.

Even though HAT-ISO is not available in the aquatic compartment, a dietary biomagnification factor (BMF) was determined in an OECD 305 compliant study. Experimental results as well as WoE considerations on Bioaccumulation potential demonstrate that the test item is of no concern regarding bioaccumulation. Please also refer to the corresponding statement in IUCLID Section 13.

HAT-ISO was considered not readily biodegradable in several tests, with a maximum of 11 % degradation within 28 days. Even though exposure to all environmental compartments is practically negligible, the adsorption potential of HAT-ISO was estimated using the US EPA Epiwin (v.3.12) software and the Log Koc determined at 5.25.

In summary, direct and indirect exposure of environmental compartments is highly unlikely, abiotic and biotic degradation are unlikely to occur and transport and distribution in the environment is practically negligible.