Registration Dossier

Physical & Chemical properties

Endpoint summary

Administrative data

Description of key information

The substance belongs to a group of Natural Complex Substances (NCS): UVCB sub-type 3, where the source is biological and the process is refinement (See ECHA Guidance on Identification and naming of substances under REACH); such as: exudates, resinoids and concretes that are well-known to be very difficult to analytically assess. These complex UVCB substances contain a large number of constituents with different volatility and solubility (mostly low solubility); the composition can be widely unknown and being (mostly) solid(ish) and/or extremely viscous resins their physical state leads to further difficulties for testing.


Considering the very complex nature of the test item (UVCB, Viscous liquid, mainly composed of unknown constituents), physico-chemical properties of the registered substance were determined from experimental testing when possible. Some endpoints were waived, based on the experience in handling, testing and use of the substance and on the chemical structure of the known constituents. We also considered waiving based on the technical issues due to the complex nature of such UVCB substance especially when the information obtained from testing was not relevant or of practical use and irrelevant for subsequent assessments.

It is NOT classified as dangerous with regard to physical hazards, based on CLP criteria (Tests on-going).

Additional information

Summary of relevant physico-chemical properties:




Thick liquid Red Brown (internal data)

Melting point


Boiling point


Relative density


Vapour pressure


Partition coefficient

Waived based on technical issue and poor knownledge of the composition of the substance + Estimation on known constituents of the registered substance.

Water solubility

 Waived considering the very complex nature of the test item, the information obtained from testing is considered as not relevant or of practical use for subsequent assessments.  

Surface tension

No structural alert, not a desired property.

Flash Point


Auto-Ignition Temperature


Flammability if contact with air or water

No spontaneous ignition, or release of flammable gas, from experience.


Unlikely for liquids (method not applicable)

Explosive properties

No potential from structure.

Oxidising properties

No potential from structure.

Slight variations are possible with composition (UVCB substance).