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Appearance / physical state / colour

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Endpoint:
appearance / physical state / colour
Type of information:
experimental study
Adequacy of study:
supporting study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
data from handbook or collection of data
Principles of method if other than guideline:
The use of secondary sources of data is acceptable when they are based on a critical evaluation of peer-reviewed data and a consequent selection of a reliable and representative value for the property under investigation. The introduction to the CRC Handbook of Chemistry and Physics states that data for physical constants have been taken from many sources, including both compilations and the primary literature. Where conflicts were found, the value deemed most reliable was chosen. Therefore, although the method used is not known, the values presented here are acceptable as they are from a reliable secondary source of physico-chemical data.
GLP compliance:
not specified
Physical state at 20°C and 1013 hPa:
solid
Form:
crystalline
Colour:
yellow
Odour:
other: Not stated
Substance type:
inorganic
Conclusions:
When solid, tetrachloroauric acid exists as yellow monoclinic hygroscopic crystals.
Executive summary:

No information on the methods used is available. However, this information is taken from a peer reviewed handbook and so can be considered reliable and suitable for use as a supporting study for this endpoint. When solid, tetrachloroauric acid exists as yellow monoclinic hygroscopic crystals.

Endpoint:
appearance / physical state / colour
Type of information:
experimental study
Adequacy of study:
supporting study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: GLP status not known, guideline not known, information from a published handbook, acceptable with restrictions
Principles of method if other than guideline:
The use of secondary sources of data is acceptable when they are based on a critical evaluation of peer-reviewed data and a consequent selection of a reliable and representative value for the property under investigation. The introduction to the Merck Index states that physical data are cited as found in the literature. When several alternate data values appear in the literature, the data is evaluated and representative selections are made; values are then reported with the corresponding source. Therefore, although the method used is not known, the values presented here are acceptable as they are from a reliable secondary source of physico-chemical data.
GLP compliance:
not specified
Physical state at 20°C and 1013 hPa:
solid
Form:
crystalline
Colour:
yellow to reddish
Substance type:
inorganic
Conclusions:
When solid, tetrachloroauric acid exists as yellow to reddish hygroscopic monoclinic crystals.
Executive summary:

When solid, tetrachloroauric acid exists as yellow to reddish hygroscopic monoclinic crystals.

No information on the methods used is available. However, this information is taken from a peer reviewed handbook and so can be considered reliable and suitable for use as a supporting study for this endpoint.

Endpoint:
appearance / physical state / colour
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: Statement on appearance and physical state taken from the test material section of a GLP compliant study on physico-chemical properties of the material
Qualifier:
no guideline followed
Principles of method if other than guideline:
The statement on appearance is taken from the test material section of a GLP-compliant study on physico-chemical properties of the material.
GLP compliance:
yes (incl. QA statement)
Physical state at 20°C and 1013 hPa:
solid
Form:
solid
Colour:
orange
Substance type:
inorganic
Conclusions:
Tetrachloroauric acid is an orange solid.
Executive summary:

The statement on appearance is taken from the test material section of a GLP-compliant study on physico-chemical properties of the material and is considered suitable for use as the key study for this

endpoint. Tetrachloroauric acid is an orange solid.

Description of key information

Tetrachloroauric acid is an orange solid. 

Key value for chemical safety assessment

Physical state at 20°C and 1013 hPa:
solid

Additional information

The statement on appearance is taken from the test material section of a GLP-compliant study on physico-chemical properties of the material and is considered suitable for use as the key study for this endpoint.

Moreover, information on appearance is available from two peer reviewed handbooks (O’Neil 2006, Lide 2008). Although the methods used are not known the handbooks are considered reliable and suitable for use as supporting studies for this endpoint.

 

Tetrachloroauric acid is also available as a water solution at concentration of 15 - 75 % (w/w).