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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

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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:
test procedure in accordance with generally accepted scientific standards and described in sufficient detail
Qualifier:
no guideline followed
Principles of method if other than guideline:
visual inspection
GLP compliance:
not specified
Physical state at 20°C and 1013 hPa:
solid
Form:
powder
Colour:
yellow
Odour:
odourless
Substance type:
inorganic
Conclusions:
The test item in an inorganic, yellow, odourless powder
Endpoint:
appearance / physical state / colour
Type of information:
experimental study
Adequacy of study:
key study
Study period:
1991-07-04 to 1991-07-11
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
test procedure in accordance with generally accepted scientific standards and described in sufficient detail
Qualifier:
no guideline followed
Principles of method if other than guideline:
Methods/Investigations
- Visual inspection
- Characterization by OES with spark source
- Loss on drying: sample amount approx. 2 g
- Quantitative element determination by atom-spectrometry: Sodium and potassium determination by atomic absorption spectrometer; Zr, Si, Pr and Al by ICP-OES
GLP compliance:
yes
Physical state at 20°C and 1013 hPa:
solid
Form:
powder
Colour:
yellow
Odour:
odourless
Substance type:
inorganic
Conclusions:
The test substance is an inorganic, yellow, odourless, ceramic powder containing the following metal oxides: ZrO2 (56.7 %), SiO2 (31.0 %), Pr2O3 (4.5 %), Na2O (0.81 %) and Al2O3 (0.19 %)

Appearance: yellow solid
Homogeneity: The test substance is homogenous by visual inspection
Main components: Zr, Si
Weight loss on drying: 0.8 mg/g
Sodium and potassium determination by atomic absorption spectrometer: Na-content is 6 mg/g and K-content is <1mg/g
Zr, Si, Pr and Al by ICP-OES: Al-content is 1 mg/g, Pr-content is 38 mg/g, Si-content is 145 mg/g and Zr-content is 420 mg/g

Description of key information

The test substance is an inorganic, yellow, odourless, powder.

Key value for chemical safety assessment

Physical state at 20°C and 1013 hPa:
solid

Additional information