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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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 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:
Disodium 4,4'-bis[6-anilino-[4-[bis(2-hydroxyethyl)amino]-1,3,5-triazin-2-yl]amino]stilbene-2,2'-disulphonate
EC Number:
224-073-5
EC Name:
Disodium 4,4'-bis[6-anilino-[4-[bis(2-hydroxyethyl)amino]-1,3,5-triazin-2-yl]amino]stilbene-2,2'-disulphonate
Cas Number:
4193-55-9
Molecular formula:
C40H44N12O10S2.2Na
IUPAC Name:
disodium 2-[(1E)-2-[4-({4-[bis(2-hydroxyethyl)amino]-6-(phenylamino)-1,3,5-triazin-2-yl}amino)-2-sulfonatophenyl]ethenyl]-5-({4-[bis(2-hydroxyethyl)amino]-6-[(cyclohexa-1,3-dien-1-yl)amino]-1,3,5-triazin-2-yl}amino)benzene-1-sulfonate
Test material form:
solid: particulate/powder
Details on test material:
- Name of the test material: Disodium 4,4'-bis[6-anilino-[4-[bis(2-hydroxyethyl)amino]-1,3,5-triazin-2-yl]amino]stilbene-2,2'-disulphonate
- Molecular formula: C40H42N12Na2O10S2
- Molecular weight: 960.9578 g/mol
- SMILES: [Na+].[Na+].OCCN(CCO)c1nc(Nc2ccccc2)nc(Nc3ccc(\C=C\c4ccc(Nc5nc(Nc6ccccc6)nc(n5)N(CCO)CCO)cc4S(=O)(=O)[O-])c(c3)S(=O)(=O)[O-])n1
- InChI: 1S/C40H44N12O10S2.2Na/c53-21-17-51(18-22-54)39-47-35(41-29-7-3-1-4-8-29)45-37(49-39)43-31-15-13-27(33(25-31)63(57,58)59)11-12-28-14-16-32(26-34(28)64(60,61)62)44-38-46-36(42-30-9-5-2-6-10-30)48-40(50-38)52(19-23-55)20-24-56;;/h1-16,25-26,53-56H,17-24H2,(H,57,58,59)(H,60,61,62)(H2,41,43,45,47,49)(H2,42,44,46,48,50);;/q;2*+1/p-2/b12-11+;
- Substance type: Organic
- Physical state: Solid
- Batch No./ Lot No.: SL:92/19-20
- Physical appearance: yellow powder
- Purity: 93.12%

Results and discussion

pH value
Key result
pH value:
6.61
Temp.:
24.9 °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

 

 24.9 °C

 Mean pH (RESULT)

 

6.61

 Inference

1. Acidic

2. Basic

3. Neutral

 Acidic

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 test dispersion was determined with the help of digital pH meter. The mean pH at 1% w/v aqueous solution was determine to be 6.61 at 24.9 °C.
Executive summary:

The pH determination 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 6.61 at 24.9 °C. Thus, test chemical was considered to be acidic in nature.