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Physical & Chemical properties

Stability: thermal, sunlight, metals

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Description of key information

The substance is stable, not corrosive to metals, has no self-heating and no self-reacting properties.
Based on the chemical structure of aspartic acid, N,N'-[methylenebis(2-methyl-4,1-cyclohexanediyl)]bis-, 1,1',4,4'-tetraethyl ester which is a structural analogue to aspartic acid, N,N'-(methylenedi-4,1-cyclohexanediyl)bis-, 1,1',4,4'-tetraethyl ester, the substance contains no chemical groups associated with explosive and self-reactive properties (see Manual of Tests and Criteria, appendix 6, article 5.1). The subtance does not fulfill the criteria for classification according to the EC regulation No 1272/2008, Annex I.
As the test method is only applicable to solids, the substance cannot be investigated for self-heating properties as it is a liquid. Therefore, aspartic acid, N,N'-(methylenedi-4,1-cyclohexanediyl)bis-, 1,1',4,4'-tetraethyl ester does not fulfill the criteria for classification according to the EC regulation No 1272/2008, Annex I.
In a read across approach, the structure analogue aspartic acid, N,N'-[methylenebis(2-methyl-4,1-cyclohexanediyl)]bis-, 1,1',4,4'-tetraethyl ester was tested for corrosion properties according section 37 of the UN Recommendations on the Transport of Dangerous Goods, Manual of Tests and Criteria and should not be classified based on the results of the test.

Additional information

A read-across with aspartic acid, N,N'-[methylenebis(2-methyl-4,1-cyclohexanediyl)]bis-, 1,1',4,4'-tetraethyl ester which is a structural analogue to aspartic acid, N,N'-(methylenedi-4,1-cyclohexanediyl)bis-, 1,1',4,4'-tetraethyl ester is performed to cover these endpoints. Both substances are diethyl esters of aspartic acid linked to a dicyclohexylmethyldiamine moiety. The difference between these two substances is merely the presence of two methyl groups connected to the cyclohexane rings. This structural analogy was confirmed by the Members State responsible for the notification of both substances under the NONS regulation. The Member State decided that test results obtained for one substance can be transfered to the other substance and that testing of both substances is usually not required. This decision is in accordance with the grouping of substances and read-across approach in Annex XI, 1.5 of the REACH Regulation.

Justification for classification or non-classification

Based on the chemical structure of aspartic acid, N,N'-[methylenebis(2-methyl-4,1-cyclohexanediyl)]bis-, 1,1',4,4'-tetraethyl ester which is a structural analogue to aspartic acid, N,N'-(methylenedi-4,1-cyclohexanediyl)bis-, 1,1',4,4'-tetraethyl ester, the substance contains no chemical groups associated with explosive and self-reactive properties (see Manual of Tests and Criteria, appendix 6, article 5.1). The subtance does not fulfill the criteria for classification according to the EC regulation No 1272/2008, Annex I.

As the test method is only applicable to solids, the substance cannot be investigated for self-heating properties as it is a liquid. Therefore,

aspartic acid, N,N'-(methylenedi-4,1-cyclohexanediyl)bis-, 1,1',4,4'-tetraethyl ester does not fulfill the criteria for classification according to the EC regulation No 1272/2008, Annex I.

In a read across approach, the structure analogue aspartic acid, N,N'-[methylenebis(2-methyl-4,1-cyclohexanediyl)]bis-, 1,1',4,4'-tetraethyl ester was tested for corrosion properties according section 37 of the UN Recommendations on the Transport of Dangerous Goods, Manual of Tests and Criteria and should not be classified based on the results of the test.

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