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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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:
boundary composition of the substance
State / form:
Reference substance:
PBT status:
the substance is not PBT / vPvB

Methanol is the alcohol hydrolysis product of the registered substance trimethoxy(2,4,4-trimethylpentyl)silane (CAS 34396-03-7).

Methanol is readily biodegradable and therefore does not meet the screening criteria for persistence (not P/vP).

Methanol has a log Kow of -0.82 to -0.64 and therefore does not meet the screening criteria for bioaccumulation (not B/vB).

Methanol has a low environmental hazard profile and is not classified as carcinogenic, mutagenic, toxic for reproduction, chronic toxicity or specific organ toxicity and therefore does not meet the criteria for toxicity (not T).


Based on ECHA guidance R.11, methanol does not meet the overall criteria for PBT or vPvB.