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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Physical & Chemical properties

pH

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Administrative data

Endpoint:
pH
Type of information:
experimental study
Adequacy of study:
key study
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:
pH of chemical Disodium 2-(3-oxo-6-oxidoxanthen-9-yl)benzoate was determined.
GLP compliance:
no

Test material

Constituent 1
Chemical structure
Reference substance name:
Disodium 2-(3-oxo-6-oxidoxanthen-9-yl)benzoate
EC Number:
208-253-0
EC Name:
Disodium 2-(3-oxo-6-oxidoxanthen-9-yl)benzoate
Cas Number:
518-47-8
Molecular formula:
C20H12O5.2Na
IUPAC Name:
disodium 3-oxo-3H-spiro[2-benzofuran-1,9'-xanthene]-3',6'-diolate
Test material form:
other: clear pale yellow liquid
Details on test material:
- Name of test material (as cited in study report): Disodium 2-(3-oxo-6-oxidoxanthen-9-yl)benzoate
- Substance type: Organic
- Physical state: Solid

Results and discussion

pH value
pH value:
8.36
Temp.:
32 °C
Concentration:
1 other: W/v

Any other information on results incl. tables

TEST RESULT

Method Details

Observations

Remarks if, any

Guideline

OECD 122

 

 

Method

 

Digital pH meter

 

Principle of method

The pH of an aqueous solution or dispersion in water is determined with a pH measurement interface equipped with an appropriate electrode system.

 

Temperature of 1% w/v test solution

-

32 °C

Mean pH (RESULT)

 

-

8.36

Inference

1.   Acidic

2.   Basic

3.   Neutral

 

Basic

Applicant's summary and conclusion

Conclusions:
The pH determination of test item Disodium 2-(3-oxo-6-oxidoxanthen-9-yl) benzoate (CAS No. 518-47-8) was done following OECD guideline 122. The pH of 1% w/v aqueous solution was measured with the help of pH meter and the mean pH was observed to be 8.36 at 32 °C
Executive summary:

The pH determination of test item Disodium 2-(3-oxo-6-oxidoxanthen-9-yl) benzoate (CAS No. 518-47-8) wasdone following OECD guideline 122. The pH of 1% w/v aqueoussolutionwas measured with the help of pH meter and the mean pH was observed to be 8.36 at 32 °C