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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Justification for type of information:
Experimental test result performed using standard OECD test guidelines

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2018
Report date:
2018

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
OECD Guideline 122 (Determination of pH, Acidity and Alkalinity)
GLP compliance:
no

Test material

Constituent 1
Chemical structure
Reference substance name:
1H-Indene-1,3(2H)-dione, 2-(2-quinolinyl)-, sulfonated, sodium salts
EC Number:
305-897-5
EC Name:
1H-Indene-1,3(2H)-dione, 2-(2-quinolinyl)-, sulfonated, sodium salts
Cas Number:
95193-83-2
Molecular formula:
C18H11NO5S to C18H8NO11S3.3Na
IUPAC Name:
trisodium hydrogen bis(2-(1,3-dioxo-5-sulfonato-2,3-dihydro-1H-inden-2-yl)quinoline-8-sulfonate)
Test material form:
solid: particulate/powder
Details on test material:
- Name of the test material: 1H-Indene-1,3(2H)-dione, 2-(2-quinolinyl)-, sulfonated, sodium salts
- Molecular formula: C18H11NO5S to C18H8NO11S3.3Na
- Molecular weight: ≥ 353.35 to ≤ 579.41g/mol
- Substance type: Organic
- Physical state: Solid
- Batch No./ Lot no.: FG/17-18/3122
- Physical Appearance: yellow powder
- Purity: 72.22%
- 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:
6.92
Temp.:
26.1 °C
Concentration:
1 vol%

Any other information on results incl. tables

TEST DESCRIPTION AND RESULT

Method Details

Observations

Remarks if, any

Guideline

OECD 122

 

 

Method

Digital pH meter

 

Principle of Method

The mean 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 emulsion

 

26.1C

mean pH (RESULT)

 

6.92

Inference

 

1. Acidic

2. Basic

3. Neutral

 

Neutral

Applicant's summary and conclusion

Conclusions:
The pH determination of test chemical was done as per the test guideline OECD 122. The mean pH of the 1% w/v test dispersion was determined with the help of digital pH meter. The mean pH was determined to be 6.92 at 26.1°C.
Executive summary:

The pH of test chemical was determined. The study was performed in accordance with OECD Guideline 122 (Determination of pH, Acidity and Alkalinity). The mean pH of the 1% w/v test dispersion was determined with the help of digital pH meter. The mean pH was determined to be 6.92 at 26.1°C. Thus, test chemical is considered to be neutral in nature.