Registration Dossier

Data platform availability banner - registered substances factsheets

Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2019
Report date:
2019

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:
2-[2-[4-(diethylamino)phenyl]vinyl]-1,3,3-trimethyl-3H-indolium acetate
EC Number:
264-796-3
EC Name:
2-[2-[4-(diethylamino)phenyl]vinyl]-1,3,3-trimethyl-3H-indolium acetate
Cas Number:
64346-30-1
Molecular formula:
C23H29N2.C2H3O2
IUPAC Name:
2-[2-[4-(diethylamino)phenyl]vinyl]-1,3,3-trimethyl-3H-indolium acetate
Test material form:
liquid
Details on test material:
Name of the test chemical: 3H-Indolium, 2-(2-(4-(diethylamino)phenyl)ethenyl)-1,3,3-trimethyl-, acetate
Molecular formula: C23H29N2.C2H3O2
Molecular weight: 392.54 g/mol
Smiles: [N+]1(C)=C(C(C)(C)c2ccccc12)\C=C\c1ccc(cc1)N(CC)CC.CC([O-])=O
InChl: 1S/C23H29N2.C2H4O2/c1-6-25(7-2)19-15-12-18(13-16-19)14-17-22-23(3,4)20-10-8-9-11-21(20)24(22)5;1-2(3)4/h8-17H,6-7H2,1-5H3;1H3,(H,3,4)/q+1;/p-1
Substance type: Organic
Physical state: Liquid

Results and discussion

pH value
Key result
pH value:
4.02
Temp.:
27.7 °C
Concentration:
1 vol%

Any other information on results incl. tables

Observation Table & 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 was

determined with a pH

measurement interface equipped

with an appropriate electrode

system.

  

 Temperature of 1% w/v

test dispersion

 

 27.7 °C

 Mean pH (RESULT)

 

 4.02

 Inference

1. Acidic

2. Basic

3. Neutral

 Acidic

Applicant's summary and conclusion

Conclusions:
The pH observation of test chemical 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. Based on available data, experimental pH value for 1% aqueous solution of test chemical was observed to be 4.02 at 27.7 °C, inferring it is acidic in nature nature.
Executive summary:

The pH observation of test chemical 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. Based on available data, experimental pH value for 1% aqueous solution of test chemical was observed to be 4.02 at 27.7 °C, inferring it is acidic in nature nature.