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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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:
13/06/2016 - 13/06/2016
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:
2016
Report date:
2016

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
other: OECD 122
Principles of method if other than guideline:
The pH determination of test item 2-(3,6-dihydroxy-2,4,5,7-tetraiodoxanthen-9-yl)benzoic acid, aluminium salt (12227-78-0)was done as per the test guideline OECD 122. The mean pH of the test dispersionwas determined with the help of digital pH meter.
GLP compliance:
no

Test material

Constituent 1
Chemical structure
Reference substance name:
2-(3,6-dihydroxy-2,4,5,7-tetraiodoxanthen-9-yl)benzoic acid, aluminium salt
EC Number:
235-440-4
EC Name:
2-(3,6-dihydroxy-2,4,5,7-tetraiodoxanthen-9-yl)benzoic acid, aluminium salt
Cas Number:
12227-78-0
Molecular formula:
C20H8I4O5.2/3Al3
IUPAC Name:
2-(3,6-dihydroxy-2,4,5,7-tetraiodoxanthen-9-yl)benzoic acid, aluminium salt
Test material form:
solid: particulate/powder
Remarks:
migrated information: powder
Details on test material:
CAS No: 12227-78-0
Name of the chemical: 2-(3,6-dihydroxy-2,4,5,7-tetraiodoxanthen-9-yl)benzoic acid, aluminium salt
Nature of chemical: Organic

Results and discussion

pH value
pH value:
4.3
Temp.:
33 °C
Concentration:
1 vol%
Remarks on result:
other: no other details available

Any other information on results incl. tables

TEST RESULTS

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

-

33°C

pH (RESULT)

 

-

4.30

Inference

1.   Acidic

2.   Basic

3.   Neutral

 

Acidic

Applicant's summary and conclusion

Conclusions:
The pH determination of test item 2-(3,6-dihydroxy-2,4,5,7-tetraiodoxanthen-9-yl)benzoic acid, aluminium salt (CAS No. 12227-78-0) was done as per the test guideline OECD 122. The mean pH of the test dispersion was determined with the help of digital pH meter. The mean pH was determine to be 4.30 at 33 °C.
Executive summary:

The pH determination of test item 2-(3,6-dihydroxy-2,4,5,7-tetraiodoxanthen-9-yl)benzoic acid, aluminium salt (CAS No. 12227-78-0) was done as per the test guideline OECD 122. The mean pH of the test dispersion was determined with the help of digital pH meter. The mean pH was determine to be 4.30 at 33 °C.