Registration Dossier
Registration Dossier
Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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.
Use of this information is subject to copyright laws and may require the permission of the owner of the information, as described in the ECHA Legal Notice.
EC number: 285-377-1 | CAS number: 85085-48-9 Extractives and their physically modified derivatives such as tinctures, concretes, absolutes, essential oils, oleoresins, terpenes, terpene-free fractions, distillates, residues, etc., obtained from Melaleuca alternifolia, Myrtaceae.
Endpoint summary
Administrative data
Description of key information
Tea tree oil is a clear liquid with a green/yellow tinge and a characteristic antiseptic odour. It boils in the range 97 – 220 °C and freezes at -22 °C. Tea tree oil has a relative density at 20 °C of 0.89 and the maximum vapour pressure has been determined to be 2100 Pa at 25 °C. Partition coefficients in the range 2510 – 314000 have been measured for the main components and its water solubility is 1420 mg/L. The surface tension of a 90% saturated solution is 51.0 mN/m and that for a 1 g/l solution is 55.0 mN/m. Tea tree oil is therefore considered to be surface active. Flash point values of 54 °C and 55 °C have been determined using the closed-cup and equilibrium methods, respectively. Tea tree oil has neither explosive nor oxidising properties. The dynamic viscosity of Tea tree oil is 2.54 mPa/s at 20°C and 1.52 mPa/s at 40°C. Kinematic viscosity is 2.86 mm2/s at 20°C and 1.71 mm2/s at 40°C. The kinematic viscosity data meet CLP criteria for classification of Tea tree oil as an aspiration hazard, Asp. Tox. 1 (H304: May be fatal if swallowed and enters airways).
Additional information
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
