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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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
Adequacy of study:
key study
Study period:
2016
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
study well documented, meets generally accepted scientific principles, acceptable for assessment

Data source

Reference
Reference Type:
other company data
Title:
Unnamed
Year:
2016
Report date:
2016

Materials and methods

Principles of method if other than guideline:
Samples were stirred with a magnetic stirrer for 30 min. pH value was measured in water phase.
GLP compliance:
not specified

Test material

Constituent 1
Chemical structure
Reference substance name:
Spiro[piperidine-​1,​1'-​pyrrolidinium] bifluoride
Cas Number:
1803551-73-6
Molecular formula:
C9 H18 N . F2 H
IUPAC Name:
Spiro[piperidine-​1,​1'-​pyrrolidinium] bifluoride
Test material form:
solid: granular
Details on test material:
Batch RFR 6861-2-3
Specific details on test material used for the study:
Date of receipt: 2016-04-05
Expiry date: 2016-10-05
Storage conditions: room temperature

Reagents

Reagent:
water

Results and discussion

pH valueopen allclose all
pH value:
3.2
Concentration:
0.01 other: g/g
Remarks on result:
other: measurement at room temperature
Remarks:
Concentration ratio 1:99
pH value:
4.5
Concentration:
0.111 other: g/g
Remarks on result:
other: measurement at room temperature
Remarks:
Concentration ratio 1:9

Applicant's summary and conclusion

Conclusions:
5-Azoniaspiro[4.5]decane, hydrogen difluoride shows a pH value of 3.2 at a concentration ratio 1:99 (test substance : water) and 4.5 at 1:9 at room temperature.
Executive summary:

Test substance 5-Azoniaspiro[4.5]decane, hydrogen difluoride shows a pH value of 3.2 at a concentration ratio 1:99 (test substance : water) and 4.5 at 1:9 at room temperature. Results are measured via Knick 765 Calimatic pH apparatus.