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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

MPEM (methyl [(dimethoxyphosphorothioyl)sulfanyl]acetate) is a colourless to pale yellow liquid with a pungent, garlic-like odour.

The melting point of MPEM is below 0°C.

The boiling point of MPEM is 110°C at 0,133 hPa.

The density of MPEM is 1.13 g / cm3 at at 25°C

Partition Coefficient n-Octanol/Water of MPEM: Log Pow = 1.7 at 25 °C

The vapour pressure of MPEM is approx. 10-5 mm Hg at 20°C and approx.10-4 mm Hg at 40°C

The water solubility of MPEM is stated at 1.5 g/l at 25 °C

The flashpoint of MPEM is over 150°C (Pensky Martens closed tester).

The zuendtemperature (flammability) of MPEM is 285 °C (DIN 51 794)