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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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:
2014
Report date:
2014

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:
Tetrasodium 4,4'-bis[[4-[bis(2-hydroxyethyl)amino]-6-(4-sulphonatoanilino)-1,3,5-triazin-2-yl]amino]stilbene-2,2'-disulphonate]
EC Number:
240-521-2
EC Name:
Tetrasodium 4,4'-bis[[4-[bis(2-hydroxyethyl)amino]-6-(4-sulphonatoanilino)-1,3,5-triazin-2-yl]amino]stilbene-2,2'-disulphonate]
Cas Number:
16470-24-9
Molecular formula:
C40H44N12Na4O16S4
IUPAC Name:
tetrasodium 2,2'-ethene-1,2-diylbis[5-({4-[bis(2-hydroxyethyl)amino]-6-[(4-sulfonatophenyl)amino]-1,3,5-triazin-2-yl}amino)benzenesulfonate]
Test material form:
solid: particulate/powder
Details on test material:
- Name of the test material: Tetrasodium 4,4'-bis[[4-[bis(2-hydroxyethyl)amino]-6-(4-sulphonatoanilino)-1,3,5-triazin-2-yl]amino]stilbene-2,2'-disulphonate]
- Molecular formula: C40H40N12Na4O16S4
- Molecular weight: 1165.048 g/mol
- Smiles notation: [Na+].[Na+].[Na+].[Na+].OCCN(CCO)c1nc(Nc2ccc(cc2)S(=O)(=O)[O-])nc(Nc3ccc(\C=C\c4ccc(Nc5nc(Nc6ccc(cc6)S(=O)(=O)[O-])nc(n5)N(CCO)CCO)cc4S(=O)(=O)[O-])c(c3)S(=O)(=O)[O-])n1
- InChI: 1S/C40H44N12O16S4.4Na/c53-19-15-51(16-20-54)39-47-35(41-27-7-11-31(12-8-27)69(57,58)59)45-37(49-39)43-29-5-3-25(33(23-29)71(63,64)65)1-2-26-4-6-30(24-34(26)72(66,67)68)44-38-46-36(48-40(50-38)52(17-21-55)18-22-56)42-28-9-13-32(14-10-28)70(60,61)62;;;;/h1-14,23-24,53-56H,15-22H2,(H,57,58,59)(H,60,61,62)(H,63,64,65)(H,66,67,68)(H2,41,43,45,47,49)(H2,42,44,46,48,50);;;;/q;4*+1/p-4/b2-1+;;;;
- Substance type: Organic
- Physical state: Solid
- Purity: 99.66%

Results and discussion

pH value
Key result
pH value:
8
Temp.:
29 °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

 

 29°C

 Mean pH (RESULT)

 

 8.0

 Inference

1. Acidic

2. Basic

3. Neutral

Basic 

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 was determined to be 8.0 at 29°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 test dispersion was determined with the help of digital pH meter. The mean pH was determined to be 8.0 at 29°C. Thus, test chemical was considered to be basic in nature.