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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Boiling point

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Administrative data

Link to relevant study record(s)

Description of key information

No boiling point was observed for most of the substances in the category Rosin adduct esters up to the temperatures reported  (up to 300°C). No decomposition was observed up to 300°C.

Resins may discolour to dark brown when heated above 150°C. This phenomenon is not the consequence of mass decomposition of the substance.  Rather, hydroperoxydes (oxidized resin acids) develop during ambient storage upon exposure to air and the heating of those hydroperoxides causes their decomposition: this forms high extinction coefficient  chromophores (hydroperoxyde cleavage) in small concentrations.

Any heating to elevated temperatures should occur under inert gas conditions to prevent darkening of the product.

Key value for chemical safety assessment

Additional information

A GLP-compliant study, conducted according to OECD Guideline 103 (differential scanning calorimetry), was provided for Resin acids and Rosin acids, fumarated, esters with glycerol (Harlan Laboratories Ltd., 2013a)