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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Classification & Labelling & PBT assessment

PBT assessment

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Administrative data

PBT assessment: overall result

Type of composition:
legal entity composition of the substance
State / form:
Reference substance:
PBT status:
the substance is not PBT / vPvB

TMBX is hydrolytically unstable and breaks down to form methanol and boric acid in the presence of water, these species can be expected to be found following release to the environment. Therefore, an assessment of ecotoxicological potential was conducted taking account of the effects of the hydrolysis breakdown products of TMBX upon the different trophic levels. Based on the data available both breakdown products are not condisered to be PBT or vPvB substance and therefore TMBX can be condsidered not to fullfil the PBT criteria.