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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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:
2017
Report date:
2017

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:
3,3'-(1,4-phenylenediimino)bis[4,5,6,7-tetrachloro-1H-isoindol-1-one]
EC Number:
226-999-5
EC Name:
3,3'-(1,4-phenylenediimino)bis[4,5,6,7-tetrachloro-1H-isoindol-1-one]
Cas Number:
5590-18-1
Molecular formula:
C22H6Cl8N4O2
IUPAC Name:
3,3'-(1,4-phenylenediimino)bis(4,5,6,7-tetrachloro-1H-isoindol-1-one)
Test material form:
solid
Details on test material:
- Name of test material (as cited in study report): 3,3'-(1,4-phenylenediimino)bis[4,5,6,7-tetrachloro-1H-isoindol-1-one]
- Molecular Formula: C22H6Cl8N4O2
- Molecular Weight: 641.94 g/mol
- SMILES Notation: O=C(NC(=Nc(ccc(N=C(NC(=O)c1c(c(c(c2CL)CL)CL)CL)c12)c3)c3)c4c(c(c(c5CL)CL)CL)CL)c45
- InChl : 1S/C22H6Cl8N4O2/c23-11-7-9(13(25)17(29)15(11)27)21(35)33-19(7)31-5-1-2-6(4-3-5)32-20-8-10(22(36)34-20)14(26)18(30)16(28)12(8)24/h1-4H,(H,31,33,35)(H,32,34,36)
- Substance type: Organic
- Physical State: Solid

Results and discussion

pH value
Key result
pH value:
6.33
Temp.:
29 °C
Concentration:
1 other: %w/v

Any other information on results incl. tables

Table 1:

Temperature of 1% w/v test solution

-

29°C

Mean pH (RESULT)

 

-

6.33

Inference

1.   Acidic

2.   Basic

3.   Neutral

 

 

Acidic

Applicant's summary and conclusion

Conclusions:
The pH of 1% w/v dispersion of the test chemical was 6.33 at 29 °C.
Executive summary:

The pH determination of test chemical was done following OECD Guideline 122 (Determination of pH, Acidity and Alkalinity). pH of 1% w/v dispersion was measured with the help of pH meter and it was observed to be 6.33 at 29 °C.