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Environmental fate & pathways

Bioaccumulation: aquatic / sediment

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A BCF of 81.34 l/kg was estimated based on log Pow of 3.4 using the EPI Suite program, v.4.00. Since the estimated BCF is lower than 100 l/kg, MBS is considered as not bioaccumulative. The hydrolysis half-life of MBS is ca. 24 hour, and hence the BCF of the degradation products is considered as relevant for risk assessment of MBS in the environment. The experimentally determined BCF of mercaptobenzothiazple is lower than 8 (MITI, 1992), the value of benzothiazole in the range of 2.1-7.5 (EU-Risk assessment, 2008), and the one of morpholine lower than 2.8 (MITI, 1979). Therefore the breakdown products of MBS also have no bioaccumulation potential.

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