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Environmental fate & pathways

Biodegradation in water: screening tests

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Description of key information

The substance Reaction mass of 2-ethylpropane-1,3-diol(DMP) and 5-ethyl-1,3-dioxane-5-methanol(CTF) and propylidynetrimethanol(TMP) can not be classified as readily biodegradable but can be considered inherently biodegradable.

Key value for chemical safety assessment

Biodegradation in water:
inherently biodegradable

Additional information

The substance Reaction mass of 2-ethylpropane-1,3-diol(DMP) and 5-ethyl-1,3-dioxane-5-methanol(CTF) and propylidynetrimethanol(TMP)

comprises of a number of components, the main constituents are CTF (cyclic trimethylolpropane), DMP (di-methylolpropane) and TMP (2 -ethyl-2 -hydroxymethyl-1,3 -propanediol).

A test conducted to OECD guideline 301A indicated that the Reaction mass overall can be considered as inherently biodegradable (90% biodegradation in 35 days). This conclusion is confirmed by individual tests on the separate components. The substances CTF (cyclic trimethylolpropane) and DMP (di-methylolpropane) are readily biodegradable (84% after 21 days with a 14 day lag phase and 81% after 14 days, respectively in tests conducted to OECD 301A). The substance TMP is inherently biodegradable (80% in 3 days in a test conducted to OECD 302B).