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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 200-268-0 | CAS number: 56-35-9
Endpoint summary
Administrative data
Description of key information
Additional information
Endpoint |
Result |
Appearance/physical state/colour |
Bis(tri-n-butyltin)oxide is a colourless to slightly yellow liquid at room temperature with solidifies below -45 °C, with a weak odour. |
Melting point/freezing point |
Bis(tri-n-butyltin)oxide is a slightly yellow liquid, which solidifies below -45 ºC |
Boiling point |
Three values were available for assessment, all reported at reduced pressured. 180 °C at 2 mm Hg 210-214 °C at 10 mm Hg 254 °C at 50 mm Hg Rationale for the use of reduced pressures was not provided. |
Density |
The relative density of bis(tributyltin) oxide was reported to be 1.17 at 25 °C. |
Vapour pressure |
Less than 1 mm Hg at 20 °C. |
Partition coefficient |
log Pow 2.2 |
Water solubility |
71.2 mg/L at 20 °C |
Solubility in organic solvents/fat solubility |
Reported as “soluble in organic solvents, diethyl ether, and ethanol” and "miscible with organic solvents." |
Flash point |
>100 °C |
Viscosity |
4.8 mm²/s |
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.
