Registration Dossier

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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Administrative data

Endpoint:
pH
Type of information:
experimental study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
test procedure in accordance with generally accepted scientific standards and described in sufficient detail

Data source

Reference
Reference Type:
other company data
Title:
Unnamed
Year:
2018

Materials and methods

Test guideline
Qualifier:
no guideline followed
Principles of method if other than guideline:
The measurement has been carried out by trained experts in a chemical company with experience with the substance.
GLP compliance:
no

Test material

Constituent 1
Chemical structure
Reference substance name:
Zinc hexafluorosilicate
EC Number:
240-894-1
EC Name:
Zinc hexafluorosilicate
Cas Number:
16871-71-9
Molecular formula:
F6Si.Zn
IUPAC Name:
zinc(2+) hexafluorosilanediuide
Specific details on test material used for the study:
Zinc hexafluorosilicate crystals were obtained from the solution produced and sold by the registrant by evaporation of water.

Reagents

Reagent:
water

Results and discussion

pH valueopen allclose all
Key result
pH value:
1.89
Temp.:
26 °C
Concentration:
ca. 30 vol%
Key result
pH value:
1.58
Temp.:
26 °C
Concentration:
ca. 30 vol%
Key result
pH value:
1.31
Temp.:
26 °C
Concentration:
ca. 30 vol%

Applicant's summary and conclusion

Conclusions:
The substance reacts acidic in a 30% aqueous solution with a pH <2.
Executive summary:

The pH values of the aqueous solution of the dissolved solid remain stable for at least one week (within the measurement inaccuracy). They are each below 2.0, based on the 30% solution.