Registration Dossier

Environmental fate & pathways

Endpoint summary

Administrative data

Description of key information

Additional information

All of the components in Polyol TD (i.e. CTF, DMP or TMP) are stable to hydrolysis i.e. the estimated half-life of the components is greater than one year under typical environmental conditions.

The 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 inherently biodegradable. Two of the components can be considered readily biodegradable (CTF, DMP) and one (TMP) as inherently biodegradable.

The logKow values of all of the major components of Reaction mass of 2-ethylpropane-1,3-diol(DMP) and 5-ethyl-1,3-dioxane-5-methanol(CTF) and propylidynetrimethanol(TMP) are reported to be <3 (see Section 4.7, partition coefficient). According to Column 2 of Annex IX of the REACH regulation, no study is required if the logKow is below the trigger of 3 as the substance can be expected to have a low potential for bioaccumulation.

Based on the physicochemical properties, all the components of the substance Reaction mass of 2-ethylpropane-1,3-diol(DMP) and 5-ethyl-1,3-dioxane-5-methanol(CTF) and propylidynetrimethanol(TMP) can be expected to have a low potential for adsorption to soil. The octanol-water partition coefficient for Polyol TD i.e. log Pow = 0.19 (CTF), -0.2 (DMP) and -0.8 (TMP) is low. A waiver is proposed for this endpoint in line with Column 2 of Annex VIII of the REACH regulation, where no study is required if the logPow is below the trigger of 3 as the substance can be expected to have a low potential for adsorption.

In accordance with REACH Annex XI, based on available data, the substance is not classified as hazardous for the environment. Therefore degradation simulation testing in water and/or sediment and in soil does not need to be conducted.