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Diss Factsheets

Environmental fate & pathways

Endpoint summary

Administrative data

Description of key information

Additional information

Stability:

The test substance is readily biodegradable. Further, at environmental pH conditions hydrolysis is not expected to be a relevant degradation process due to the absence of hydrolysable groups.

Biodegradation:

(BASF AG, 2004):

A biodegradation was carried out according to the official guidelines.

The test was conducted over 18 days. Aniline was used as a reference substance. DMCHA was found to degrade by a mean value of 90 -100% within the 10 -day window. Therefore, DMCHA is considered to be readily biodegradable.

The test was proven to be valid and ready biodegradation was proved according to the stipulations outlined in the OECD guidelines. Therefore, no further testing is required.

Bioaccumulation:

( Lyman W.J.; Reehl W.F.; Rosenblatt D.H., 1990):

The Handbook of Chemical Property Estimation Methods was used to estimate the bioaccumulation factor of DMCHA. The following figures were derived:

BCF – 19.84 (Based on a measured log Pow of 2.01. from the equation log BCF=0.76*logPow-0.23)

BCF – 35.66 (Based on a measured log Pow of 2.01. from the equation log BCF=2.791-0.564logS.)

Transport and Distribution:

Waiver:

In accordance with column 2 of REACH annex VIII, the adsorption/desorption screening test does not have to be conducted as DMCHA has a low octanol water partition coefficient of 2.3.