Registration Dossier

Administrative data

Endpoint:
pH
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2017-01-17 – 2017-01-17
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
comparable to guideline study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2017
Report Date:
2017

Materials and methods

Test guideline
Qualifier:
according to
Guideline:
other: OECD 122
Principles of method if other than guideline:
A pH meter is essentially a voltmeter with high input impedance which measures the voltage of an electrode sensitive to the hydrogen ion concentration, relative to another electrode which exhibits a constant voltage
GLP compliance:
no

Test material

Reference
Name:
Unnamed
Type:
Constituent
Test material form:
solid: crystalline
Details on test material:
- Name of test material (as cited in study report): Tetrabutylammonium hydrogen sulphate
- Molecular formula :C16H36N.HO4S
- Molecular weight : 339.53g/mol
- Smiles notation: C([N+](CCCC)(CCCC)CCCC)CCC.S([O-])(=O)(=O)O
- InChl : 1S/C16H36N.H2O4S/c1-5-9-13-17(14-10-6-2,15-11-7-3)16-12-8-4;1-5(2,3)4/h5-16H2,1-4H3;(H2,1,2,3,4)/q+1;/p-1
- Substance type: Organic
- Physical state: Solid
Specific details on test material used for the study:
- Name of test material: N,N,N-tributylbutan-1-aminium hydrogen sulfate
- Molecular formula: C16 H36 N.H O4 S
- Molecular weight: 339.537 g/mol
- Smiles notation: C([N+](CCCC)(CCCC)CCCC)CCC.S([O-])(=O)(=O)O
- InChl: 1S/C16H36N.H2O4S/c1-5-9-13-17(14-10-6-2,15-11-7-3)16-12-8-4;1-5(2,3)4/h5-16H2,1-4H3;(H2,1,2,3,4)/q+1;/p-1
- Substance type: Organic
- Physical state: Solid

Results and discussion

pH value
pH value:
1.73
Temp.:
26 °C
Concentration:
1 other: % w/v

Applicant's summary and conclusion

Conclusions:
pH of 1% w/v aqueous solution of the Tetrabutylammonium hydrogen sulphate (CAS No 32503-27-8) is 1.73 at 26 °C.
Executive summary:

pH of 1% w/v aqueous solution of the test substance Tetrabutylammonium hydrogen sulphate (CAS No32503 -27 -8) is 1.73 at 26 °C. Thus, 1% solution can be considered to be acidic in nature.