Registration Dossier

Administrative data

Endpoint:
pH
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2017-02-01 – 2017-02-01
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
comparable to guideline study
Justification for type of information:
Experimental result performed using standard methods of analysis

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
Details on test material:
- Name of test material: 2,2'-(ethene-1,2-diyldi-4,1-phenylene)bis(1,3-benzoxazole)
- Molecular formula: C28 H18 N2 O2
- Molecular weight: 414.462 g/mol
- Smiles notation: n1c2ccccc2oc1c1ccc(\C=C\c2ccc(c3oc4ccccc4n3)cc2)cc1
- InChl: 1S/C28H18N2O2/c1-3-7-25-23(5-1)29-27(31-25)21-15-11-19(12-16-21)9-10-20-13-17-22(18-14-20)28-30-24-6-2-4-8-26(24)32-28/h1-18H/b10-9+
- Substance type: Organic
- Physical state: Solid
Specific details on test material used for the study:
- Name of test material: 2,2'-(ethene-1,2-diyldi-4,1-phenylene)bis(1,3-benzoxazole)
- Molecular formula: C28 H18 N2 O2
- Molecular weight: 414.462 g/mol
- Smiles notation: n1c2ccccc2oc1c1ccc(\C=C\c2ccc(c3oc4ccccc4n3)cc2)cc1
- InChl: 1S/C28H18N2O2/c1-3-7-25-23(5-1)29-27(31-25)21-15-11-19(12-16-21)9-10-20-13-17-22(18-14-20)28-30-24-6-2-4-8-26(24)32-28/h1-18H/b10-9+
- Substance type: Organic
- Physical state: Solid

Reagents

Reagent:
water

Results and discussion

pH value
Key result
pH value:
8.63
Temp.:
30 °C
Concentration:
1 other: %w/v
Remarks on result:
other: by pH meter

Any other information on results incl. tables

TEST DESCRIPTION AND RESULT

Temperature of 1% w/v test solution

-

30°C

pH (RESULT)

 

-

8.63

Inference

1.   Acidic

2.   Basic

3.   Neutral

 

 

Basic

Applicant's summary and conclusion

Conclusions:
The pH of 1% w/v dispersion of the test item 2,2'-(vinylenedi-p-phenylene)bisbenzoxazole (CAS No1533-45-5) was 8.63 at 30 °C.
Executive summary:

The pH determination of test item 2,2'-(vinylenedi-p-phenylene)bisbenzoxazole (CAS No 1533-45-5) was done following OECD guideline 122. pH of 1% w/v dispersion was measured with the help of pH meter and it was observed to be 8.63at 30 °C. Based on the value the

2,2'-(vinylenedi-p-phenylene)bisbenzoxazole (CAS No 1533-45-5) was considered as basic in nature.