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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2015
Report date:
2015

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:
α,α-bis[4-(dimethylamino)phenyl]-4-(phenylamino)naphthalene-1-methanol
EC Number:
229-851-8
EC Name:
α,α-bis[4-(dimethylamino)phenyl]-4-(phenylamino)naphthalene-1-methanol
Cas Number:
6786-83-0
Molecular formula:
C33H33N3O
IUPAC Name:
(4-anilino-1-naphthyl){bis[4-(dimethylamino)phenyl]}methanol
Test material form:
solid
Details on test material:
- Name of the test material: (4-anilino-1-naphthyl){bis[4-(dimethylamino)phenyl]}methanol
- Common name: Solvent blue 4
- Molecular weight: 487.644 g/mol
- Molecular formula: C33H33N3O
- SMILES: N(c1ccc(cc1)C(c1ccc(N(C)C)cc1)(c1c2c(c(Nc3ccccc3)cc1)cccc2)O)(C)C
- InChI: 1S/C33H33N3O/c1-35(2)27-18-14-24(15-19-27)33(37,25-16-20-28(21-17-25)36(3)4)31-22-23-32(30-13-9-8-12-29(30)31)34-26-10-6-5-7-11-26/h5-23,34,37H,1-4H3
- Substance type: Organic
- Physical state: Solid

Results and discussion

pH value
Key result
pH value:
7.5
Temp.:
25 °C
Concentration:
1 vol%
Remarks on result:
other: Slightly basic

Applicant's summary and conclusion

Conclusions:
pH of 1% w/v aqueous solution of the test chemical was observed to be 7.5 at 25°C indicating that the test chemical was slightly basic in nature.
Executive summary:

The pH determination of test substance was done as per the test guideline OECD 122. The pH of the test solution was determined with the help of pH meter. pH of 1% w/v aqueous solution of the test chemical was observed to be 7.5 at 25°C indicating that the test chemical was slightly basic in nature.