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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 201-762-9 | CAS number: 87-66-1
pH
Administrative data
- Endpoint:
- pH
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 08/02/18
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 018
- Report date:
- 2018
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- other: ASTM E 70
- GLP compliance:
- not specified
- Other quality assurance:
- other: UNI EN ISO 9001:2008
- Remarks:
- Management systems for the quality – N. cert.: 7516
Test material
- Reference substance name:
- Pyrogallol
- EC Number:
- 201-762-9
- EC Name:
- Pyrogallol
- Cas Number:
- 87-66-1
- Molecular formula:
- C6H6O3
- IUPAC Name:
- benzene-1,2,3-triol
- Reference substance name:
- unknown impurities
- IUPAC Name:
- unknown impurities
- Test material form:
- not specified
- Details on test material:
- not specified
Constituent 1
impurity 1
- Specific details on test material used for the study:
- SOURCE OF TEST MATERIAL
- Source and lot/batch No.of test material: internal
- Expiration date of the lot/batch: 20170710
- Purity test date: 08/02/18
RADIOLABELLING INFORMATION (if applicable) not applicable
- Radiochemical purity: -
- Specific activity: -
- Locations of the label: -
- Expiration date of radiochemical substance: -
STABILITY AND STORAGE CONDITIONS OF TEST MATERIAL
- Storage condition of test material: not specified
- Stability under test conditions: not specified
- Solubility and stability of the test substance in the solvent/vehicle: not specified
- Reactivity of the test substance with the solvent/vehicle of the cell culture medium: not specified
TREATMENT OF TEST MATERIAL PRIOR TO TESTING
- Treatment of test material prior to testing: not specified
- Preliminary purification step (if any): not specified
- Final dilution of a dissolved solid, stock liquid or gel: not specified
- Final preparation of a solid: not specified
FORM AS APPLIED IN THE TEST (if different from that of starting material) : solution
TYPE OF BIOCIDE/PESTICIDE FORMULATION (if applicable) not applicable
OTHER SPECIFICS: Assay (%) Min. 99.00 - tested sample: 99.18
M.P.( °C) Min 130.0 ÷ 136.0 - tested sample: 131.5 ÷ 132.5
Residue on ignition (%): 0.10 max. - tested sample: 0.06
Reagents
- Reagent:
- water
Titration of acidity and alkalinity
- Details on titrant used:
- - Volume of titrant used:
not relevant
- Titer of titrant used: not relevant
- Other: electrometric measurement of pH values of aqueous solutions with the glass electrode
Results and discussion
pH valueopen allclose all
- pH value:
- 4.64
- Temp.:
- 25 °C
- Concentration:
- 50 other: mg/ml
- pH value:
- 4.37
- Temp.:
- 25 °C
- Concentration:
- 100 other: mg/ml
- pH value:
- 4.37
- Temp.:
- 25 °C
- Concentration:
- 200 other: mg/ml
Applicant's summary and conclusion
- Conclusions:
- An electrometric measurement of pH values of 3 aqueous solutions of Pyrogallol with the glass electrode, according to the method ASTM E 70 was performed.
The results were (i) (5g/100 ml), pH = 4.64; (ii) (10g/100 ml), pH = 4.37 and (iii) (20g/100 ml), pH = 4.37. - Executive summary:
An electrometric measurement of pH values of 3 aqueous solutions of Pyrogallol with the glass electrode, according to the method ASTM E 70 was performed.
The results were (i) (5g/100 ml), pH = 4.64; (ii) (10g/100 ml), pH = 4.37 and (iii) (20g/100 ml), pH = 4.37.
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.
