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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Appearance / physical state / colour

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Administrative data

Link to relevant study record(s)

Description of key information

The physical state of Ditantalum pentaoxide has been described as a white powder according to two studies.

Key value for chemical safety assessment

Physical state at 20°C and 1013 hPa:

Additional information

Two studies have been provided to address this endpoint on a weight of evidence basis. May (2001) is a genetic toxicity study and Wilcox (2001) is an acute toxicity study performed to OECD guidelines and GLP, both studies provide a detailed described of the physical form of the test material. The studies are performed to a good standard and have been assigned a reliability score of 1 using the principles for assessing data quality as set out in Klimisch (1997).