Registration Dossier

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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Physical & Chemical properties

Endpoint summary

Administrative data

Description of key information

4,4’-Dimethoxytrityl chloride is a white to slight pink crystalline solid having a melting point of 127 °C and no boiling point under atmospheric conditions as decomposition occurs after melting at approximately 150 °C. The relative density of the test substance at 20 °C is 1.28 and the vapour pressure at 20 °C is 1.6 x 10E-5 Pa. A water solubility of 3.0 mg/L at 20 °C was determined and the organic solid is considered non-flammable. With respect to the particle size distribution, a large part of the test item was present as agglomerates with a diameter above 1 mm and hence the test item was sieved with a mesh size of 1000 µm. Only 43% (w/w) of the test item passed the sieve and only this fraction was measured with laser diffraction. A median particle size D (v, 0.5) of 12.8 µm was determined and the log Pow of 4,4’-Dimethoxytrityl chloride was estimated by QSAR calculation and is 5.74.

Additional information