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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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.
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EC number: 241-047-9 | CAS number: 16970-55-1
Appearance / physical state / colour
Administrative data
Link to relevant study record(s)
- Endpoint:
- appearance / physical state / colour
- Type of information:
- other: Statement on appearance and physical state provided by the Lead Registrant
- Adequacy of study:
- key study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- study well documented, meets generally accepted scientific principles, acceptable for assessment
- Principles of method if other than guideline:
- No guideline followed, but a statement on the appearance and physical state of the substance has been provided by the Lead Registrant
- GLP compliance:
- no
- Physical state at 20°C and 1013 hPa:
- liquid
- Form:
- other: solution
- Colour:
- brown - yellow
- Odour:
- biting
- Substance type:
- inorganic
- Conclusions:
- This substance is only stable in solution.
- Executive summary:
Revised statement on the appearance of the substance has been provided by the Lead Registrant (Fuchs 2021).
Dihydrogen tetrachloropalladate(2 -) is only stable in solution.
The colour of the solution can range between brown and yellow.
The most concentrated solution contains 59% of H2[PdCl4]. When trying to further concentrate the solution, e.g. by evaporation on a water bath, H2O and HCl starts to evolve. In addition, the H2[PdCl4] hydrolyses to palladium chloride hydroxide moieties (e.g. PdCl2.HCl.H2O or H2PdCl3(OH).H2O) and palladium dihydroxide.
Reference
Description of key information
This substance is only stable in solution.Key value for chemical safety assessment
- Physical state at 20°C and 1013 hPa:
- liquid
Additional information
Statement on the appearance of the substance has been provided by the Lead Registrant (Fuchs 2021).
Dihydrogen tetrachloropalladate(2 -) is only stable in solution.
The colour of the solution can range between brown and yellow.
The most concentrated solution contains 59% of H2[PdCl4]. When trying to further concentrate the solution, e.g. by evaporation on a water bath, H2O and HCl starts to evolve. In addition, the H2[PdCl4] hydrolyses to palladium chloride hydroxide moieties (e.g. PdCl2.HCl.H2O or H2PdCl3(OH).H2O) and palladium dihydroxide.
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.
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