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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Link to relevant study record(s)

Reference
Endpoint:
appearance / physical state / colour
Type of information:
experimental study
Adequacy of study:
key study
Study period:
15 Nov 2018 - 20 Dec 2018
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
EPA OPPTS 830.6302 (Color)
Deviations:
not specified
Qualifier:
according to guideline
Guideline:
EPA OPPTS 830.6303 (Physical State)
Deviations:
not specified
Qualifier:
according to guideline
Guideline:
EPA OPPTS 830.6304 (Odor)
Deviations:
not specified
GLP compliance:
yes
Specific details on test material used for the study:
Chemical name: Magnesium potassium fluoride silicate (Mg2.7K0.7Si4O10F2)
Previously known as: magnesium potassium silicon fluoride hydroxide oxide, and referenced as CAS number 273730-58-8
Trade name: MICROMICA
Composition formula: K₀.₇Mg₂.₇Si₄O₁₀F₂
Molecular weight: 403.33 g/mol
Purity of test item: ≥95%
Impurity: <5% water
Lot number: 776A
Physical state at 20°C and 1013 hPa:
solid
Key result
Form:
solid: particulate/powder
Colour:
White (Munsell value: N9.5)
Odour:
odourless
Substance type:
inorganic
Conclusions:
The test item was observed to be a white odourless powder with a Munsell colour of N9.5 at 20 °C and atmospheric pressure.
Executive summary:

The colour, physical state and odour of the test item was assessed in a GLP study performed using test methods US EPA OPPTS 830.6302, 830.6303, 830.6304 respectively. The test item was observed to be a white odourless powder with a Munsell colour of N9.5 at 20 °C and atmospheric pressure.

Description of key information

Key value for chemical safety assessment

Physical state at 20°C and 1013 hPa:
solid
Form:
solid

Additional information