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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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:
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
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:
2,2'-(vinylenedi-p-phenylene)bisbenzoxazole
EC Number:
216-245-3
EC Name:
2,2'-(vinylenedi-p-phenylene)bisbenzoxazole
Cas Number:
1533-45-5
Molecular formula:
C28H18N2O2
IUPAC Name:
2,2'-(ethene-1,2-diyldi-4,1-phenylene)bis(1,3-benzoxazole)
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.