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Diss Factsheets

Physical & Chemical properties

pH

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Administrative data

Endpoint:
pH
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2016-10-25 – 2016-10-25
Reliability:
1 (reliable without restriction)

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2016
Report date:
2016

Materials and methods

Test guideline
Qualifier:
according to guideline
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

Constituent 1
Chemical structure
Reference substance name:
Dimethyloctadecyl[3-(trimethoxysilyl)propyl]ammonium chloride
EC Number:
248-595-8
EC Name:
Dimethyloctadecyl[3-(trimethoxysilyl)propyl]ammonium chloride
Cas Number:
27668-52-6
Molecular formula:
C26H58NO3Si.Cl
IUPAC Name:
dimethyl(octadecyl)[3-(trimethoxysilyl)propyl]azanium chloride
Test material form:
other: transparent orangish yellow liquid
Details on test material:
- Name of test material (as cited in study report): 3-(Trimethoxysilyl)propyldimethyloctadecylammonium
- Molecular formula: C26H58NO3Si.Cl
- Molecular weight: 496.287 g/mol
- Smiles notation: [Si](CCC[N+](CCCCCCCCCCCCCCCCCC)(C)C)(OC)(OC)OC.[ClH-]
- InChl: 1S/C26H58NO3Si.ClH/c1-7-8-9-10-11-12-13-14-15-16-17-18-19-20-21-22-24-27(2,3)25-23-26-31(28-4,29-5)30-6;/h7-26H2,1-6H3;1H/q+1;/p-1
- Substance type: Organic
- Physical state: Liquid

Results and discussion

pH value
pH value:
4.59
Temp.:
30 °C
Concentration:
1 other: %w/v

Applicant's summary and conclusion

Conclusions:
The pH of 1% w/v solution of the test item Dimethyloctadecyl[3-(trimethoxysilyl)propyl]ammonium chloride (CAS No27668-52-6)was 4.59 at30 °C.
Executive summary:

The pH determination of test item Dimethyloctadecyl[3-(trimethoxysilyl)propyl]ammonium chloride (CAS No 27668-52-6) was done following OECD guideline 122. pH of 1% w/v solution was measured with the help of pH meter and it was observed to be 4.59at 30 °C. Based on the result the

Dimethyloctadecyl[3-(trimethoxysilyl)propyl]ammonium chloride (CAS No 27668-52-6) was considered to be acidic in nature.