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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Additional information

Appearance: Dimethyl sulfate is a viscous, colourless liquid with an odour of a characteristic substance which contains of a sulfur compound.

Melting point: -32°C (According to the reference dimethyl sulfate decomposes at 188°C.)

Decomposition point: 188 °C (reliable handbook data)

Relative density: 1.33 (approx. 20°C) (reliable handbook data)

Vapour pressure: ≥ 90 Pa at 25°C

Partition coefficient: 0.16 (QSAR calculation KOWWIN v1.67 according to REACH guidance on QSARs R.6, August 2008)

Water solubility: 28 g/L (18°C; no pH given) (reliable handbook data); remark: DMS hydrolyses in water

Surface tension: 40.1 mN/cm at 18°C (surface active properties)

Particle size distribution: This study does not need to be conducted for the test substance, since it is only marked or used in a liquid form (cf. Annex VII section 7.14 Column 2 of regulation (EC) 1907/2006).

Flammability: not flammable

Auto-flammability: 450°C (reliable handbook data)

Flammability in contact with water: non flammable

Pyrophoric properties: non pyrophoric properties

Explosive properties: not explosive

Oxidising properties: no oxidising properties