Registration Dossier

Data platform availability banner - registered substances factsheets

Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Currently viewing:

Administrative data

Link to relevant study record(s)

Reference
Endpoint:
appearance / physical state / colour
Type of information:
other: Statement on appearance and physical state provided by the Lead Registra
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Qualifier:
no guideline followed
Principles of method if other than guideline:
No guideline followed, but a statement on appearance and physical state has been provided by the
Lead Registrant
GLP compliance:
no
Physical state at 20°C and 1013 hPa:
solid
Form:
solid: crystalline
Colour:
light yellow, transparent
Substance type:
inorganic
Conclusions:
Solid Tetraamminepalladium(2+) dihydroxide can be isolated, but protective gas atmosphere is
needed to keep it stable. Under normal atmospheric conditions Tetraamminepalladium(2+) dihydroxide reacts with carbon dioxide under formation of Tetraamminepalladium hydrogen carbonate.
Executive summary:

A statement on the appearance and physical state of the substance has been provided by the Lead Registrant (Brasch 2021):
Although solid Tetraamminepalladium(2+) dihydroxide can be isolated, protective gas atmosphere is needed to keep it stable. Under normal atmospheric conditions Tetraamminepalladium(2+) dihydroxide reacts with carbon dioxide under formation of Tetraamminepalldium hydrogen carbonate.
In practice, Tetraamminepalladium(2 +) dihydroxide is put on the market in an aqueous alkaline solution, containing up to a maximum of 14 % (w/w) of Tetraamminepalladium(2+) dihydroxide.

Description of key information

Solid Tetraamminepalladium(2+) dihydroxide can be isolated, but protective gas atmosphere is needed to keep it stable. Under normal atmospheric conditions Tetraamminepalladium(2+) dihydroxide reacts with carbon dioxide under formation of Tetraamminepalldium hydrogen carbonate.

Key value for chemical safety assessment

Physical state at 20°C and 1013 hPa:
solid

Additional information

A statement on the appearance and physical state of the substance has been provided by the Lead Registrant (Brasch 2021):
Although solid Tetraamminepalladium(2+) dihydroxide can be isolated, protective gas atmosphere is needed to keep it stable. Under normal atmospheric conditions Tetraamminepalladium(2+) dihydroxide reacts with carbon dioxide under formation of Tetraamminepalldium hydrogen carbonate.
In practice, Tetraamminepalladium(2 +) dihydroxide is put on the market in an aqueous alkaline solution, containing up to a maximum of 14 % (w/w) of Tetraamminepalladium(2+) dihydroxide.