Registration Dossier
Registration Dossier
Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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.
Use of this information is subject to copyright laws and may require the permission of the owner of the information, as described in the ECHA Legal Notice.
EC number: 204-282-8 | CAS number: 118-88-7
pH
Administrative data
- Endpoint:
- pH
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 18.12.2012 to 03.01.2013
- Reliability:
- 1 (reliable without restriction)
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 012
- Report date:
- 2013
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- other: by pH meter
- Principles of method if other than guideline:
- Measured as negative log of Hydrogen Ion concentration using pH meter & appropriate Buffers of pH 4 & 9
- GLP compliance:
- no
Test material
- Reference substance name:
- 4-aminotoluene-2-sulphonic acid
- EC Number:
- 204-282-8
- EC Name:
- 4-aminotoluene-2-sulphonic acid
- Cas Number:
- 118-88-7
- Molecular formula:
- C7H9NO3S
- IUPAC Name:
- 5-amino-2-methylbenzene-1-sulfonic acid
- Test material form:
- other: solid
- Details on test material:
- Name of the test material: 4-aminotoluene-2-sulphonic acid
Molecular formula: C7H9NO3S
Molecular weight: 187.21
Physical state: Solid
Substance Type: Organic
Constituent 1
Results and discussion
pH value
- pH value:
- 2.92
- Temp.:
- 21 °C
- Concentration:
- 1 vol%
Applicant's summary and conclusion
- Conclusions:
- 1% by volume solution of 4-aminotoluene-2-sulphonic acid was found to exhibit a pH of 2.92 at 21 deg C. Thus 1% by volume solution of 4-aminotoluene-2-sulphonic acid is relatively acidic in nature.
- Executive summary:
1% by volume solution of 4-aminotoluene-2-sulphonic acid was found to exhibit a pH of2.92at 21 deg C. Thus 1% by volume solution of 4-aminotoluene-2-sulphonic acid is relatively acidic in nature.
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
