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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Additional information

TBBS underlies a fast hydrolysis in water. For risk assessment TBBS and its identified hydrolysis products MBT and tert-butylamine are taken into account.

For TBBS a moderate adsorption potential in soil/sediment was estimated with Adsorption coefficient (log Koc) 2.76 [Kow Method]. MBT has moderate adsorption potential in soil/sediment with the adsorption coefficient (log Koc) of 2.51 – 3.55. Tert-butylamine however has only a low affinity to adsorption with a logKoc of 1.43.

TBBS is essentially non-volatile. The calculation of Henry's law constant with HENRYWIN included in the Estimation Program Interface (EPI) Suite v4.11 revealed a value of 8.58E-005 Pa*m³/mol at 25 °C for the unaffected molecule of N-tert-butylbenzothiazole-2-sulphenamide. The estimated half-life in air of TBBS is much shorter than 48 hours and hence no potential for long-range transport of TBBS in air is expected.

The distribution of TBBS in a "unit world" was calculated according to the Mackay fugacity model level I based on the physico-chemical properties. The main target compartment for TBBS is water of 72.65 % and sediment of 13.31 %, followed by soil of 13.16 %.