Registration Dossier

Administrative data

Endpoint:
pH
Type of information:
experimental study
Adequacy of study:
key study
Study period:
04/07/2015
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Justification for type of information:
Experimental test result performed using standard test guidelines

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2015
Report Date:
2015

Materials and methods

Test guideline
Qualifier:
according to
Guideline:
other: OECD 122
Principles of method if other than guideline:
The pH determination of test substance Zinc Stearate (CAS No. 557-05-1) was done as per the test guideline OECD 122. The pH of the test solution was determined with the help of pH meter.
GLP compliance:
no

Test material

Reference
Name:
Unnamed
Type:
Constituent
Test material form:
solid
Details on test material:
- Name of test material : Zinc distearate
- Molecular formula: C36H70O4Zn
- Molecular weight: 632.335 g/mol
- SMILES: CCCCCCCCCCCCCCCCCC(=O)[O-].CCCCCCCCCCCCCCCCCC(=O)[O-].[Zn+2]
- InChI: 1S/2C18H36O2.Zn/c2*1-2-3-4-5-6-7-8-9-10-11-12-13-14-15-16-17-18(19)20;/h2*2-17H2,1H3,(H,19,20);/q;;+2/p-2
- Substance type: Organic
- Physical state: Solid
- Batch no.: L216551704
- Purity: 11.10% (as zinc)
- Physical Appearance: Fine white amorphous powder
- Stability: Stable in recommended storage conditions
- Storage Conditions: 1. Ambient Temp (23 to 27 °C) √ (Store in a cool place. Keep containers tightly closed in a dry and well ventilated place)
Specific details on test material used for the study:
- Name of test material : Zinc distearate
- Molecular formula: C36H70O4Zn
- Molecular weight: 632.335 g/mol
- SMILES: CCCCCCCCCCCCCCCCCC(=O)[O-].CCCCCCCCCCCCCCCCCC(=O)[O-].[Zn+2]
- InChI: 1S/2C18H36O2.Zn/c2*1-2-3-4-5-6-7-8-9-10-11-12-13-14-15-16-17-18(19)20;/h2*2-17H2,1H3,(H,19,20);/q;;+2/p-2
- Substance type: Organic
- Physical state: Solid
- Batch no.: L216551704
- Purity: 11.10% (as zinc)
- Physical Appearance: Fine white amorphous powder
- Stability: Stable in recommended storage conditions
- Storage Conditions: 1. Ambient Temp (23 to 27 °C) √ (Store in a cool place. Keep containers tightly closed in a dry and well ventilated place)

Results and discussion

pH value
Key result
pH value:
6.55
Temp.:
30 °C
Concentration:
1 vol%
Remarks on result:
other: No other detail available

Any other information on results incl. tables

Method Details

Observations

Remarks if, any

Guideline

OECD 122

-

 

Method

 

pH Meter

-

Principle of method

 

 

 

 

 

 

 

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.

-

Temperature of 1% w/v test solution

-

30 °C

pH (RESULT)

 

-

6.55

Inference

1.   Acidic

2.   Basic

3.   Neutral

 

Acidic to neutral

Applicant's summary and conclusion

Conclusions:
The pH determination of test substance Zinc Stearate (CAS No. 557-05-1) was done as per the test guideline OECD 122. The pH of the test solution was determined with the help of pH meter. The pH was determine to be 6.55 at 30 °C.
Executive summary:

The pH determination of test substance Zinc Stearate (CAS No. 557-05-1) was done as per the test guideline OECD 122. The pH of the test solution was determined with the help of pH meter. The pH was determine to be 6.55 at 30 °C.