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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
data from handbook or collection of data
Justification for type of information:
Data is from authoritative database

Data source

Reference
Reference Type:
other: authoritative database
Title:
pH
Author:
Institut für Arbeitsschutz der Deutschen Gesetzlichen Unfallversicherung (IFA) GESTIS-database on hazardous substances
Year:
2018
Bibliographic source:
GESTIS substance database, 2018.

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
other: as mentioned below
Principles of method if other than guideline:
Determination of the pH of test chemical.
GLP compliance:
not specified

Test material

Constituent 1
Chemical structure
Reference substance name:
Indole
EC Number:
204-420-7
EC Name:
Indole
Cas Number:
120-72-9
Molecular formula:
C8H7N
IUPAC Name:
1H-indole
Test material form:
solid: crystalline
Details on test material:
- Name of the test material: Indole
- Molecular formula: C8H7N
- Molecular weight: 117.15 g/mol
- SMILES: c1ccc2[nH]ccc2c1
- InChI: 1S/C8H7N/c1-2-4-8-7(3-1)5-6-9-8/h1-6,9H
- Substance type: Organic
- Physical state: Solid

Results and discussion

pH value
Key result
pH value:
5.9
Temp.:
20 °C
Concentration:
1 000 g/L

Applicant's summary and conclusion

Conclusions:
The pH of test chemical was determined to be 5.9 at 20°C and conc. of 1000 g/l.
Executive summary:

On the basis of data from authoritative database, the pH of test chemical was determined to be 5.9 at 20°C and conc. of 1000 g/l indicating that the test chemical was considered to be acidic in nature.