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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Based on its physical chemical properties, Diacid 1550 does not need to be classified as dangerous for physical-chemical hazards according to the criteria of Directive 67/548/EEC.

Based on its physical chemical properties, Diacid 1550 does not need to be classified as hazardous for physical-chemical hazards according to the criteria of GHS/CLP regulation 1272/2008/EC.

The substance is a viscous liquid.

The substance has a melting point of -3 ºC.

No boiling point was observed for this substance as it starts to decompose at 360 ºC.

The relative density of the substance is 1.01 at 20 ºC.

The vapour pressure of the substance is 0.000045 Pa at 25 ºC.

The partitioning coefficients of Diacid 1550 constituents range from 3.36 to 7.61. 73.4% of the UVCB has a partition coefficient of 6.36 - 6.61.

The water solubility of the C18 fatty acid compound and the C21 dicarboxylic acid compound are <1.255 and 15.72 respectively at 20 ºC.

The surface tension of the substance is 57.2 - 60.3 mN/m at 22.2 ºC for a 90% saturated solution.

The flash point of the substance is 229 ºC.