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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Melting point / freezing point

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Link to relevant study record(s)

Reference
Endpoint:
melting point/freezing point
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: GLP Compliant, guideline study, available as unpublished report, acceptable with restrictions.
Qualifier:
equivalent or similar to guideline
Guideline:
other: OECD 102/A1 Melting Freezing Temperature
Deviations:
no
GLP compliance:
yes (incl. QA statement)
Type of method:
other: Differential scanning calorimetry (DSC) using the procedure specified in ASTM E537-86
Melting / freezing pt.:
383 °C
Decomposition:
yes

Potassium dicyanoaurate decomposed from approximately 383 °C (656K). As the test item decomposed, no value for melting temperature could be determined.

Conclusions:
Potassium dicyanoaurate decomposed from approximately 383 °C (656K). As the test item decomposed, no value for melting temperature could be determined.
Executive summary:

This is a GLP compliant, guideline study which is considered suitable for use as the key study for this endpoint. Potassium dichanoaurate decomposed from approximately 383 °C (656K). As the test item decomposed, no value for melting temperature could be determined.

Description of key information

Potassium dicyanoaurate decomposed from approximately 383 °C (656K).

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:
383 °C

Additional information

A GLP-compliant, guideline study is available for this endpoint (Harlan Laboratories 2011) and is considered suitable for use as the key study.