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EC number: - | CAS number: -
pH
Administrative data
- Endpoint:
- pH
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 27 June 2019 to 10 September 2019
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 019
- Report date:
- 2019
Materials and methods
Test guidelineopen allclose all
- Qualifier:
- according to guideline
- Guideline:
- EPA OPPTS 830.7000 (pH)
- Version / remarks:
- 1996
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- CIPAC MT 75 (Determination of pH Values)
- Deviations:
- no
- GLP compliance:
- yes
Test material
Reference
- Name:
- Unnamed
- Type:
- Constituent
- Test material form:
- liquid
- Details on test material:
- - Appearance/physical state: Light yellow liquid
- Storage conditions: Ambient temperature
Results and discussion
pH value
- Key result
- pH value:
- 2.71
- Temp.:
- 22 °C
- Concentration:
- 1 other: % w/v
Any other information on results incl. tables
RESULTS AND DISCUSSION
- The pH analyses were determined using weighed aliquots of the test material dispersed in reagent water at a concentration of one percent (w/v).
- Sample weights were 1.0192 grams for the first test sample and 1.0100 grams for the second test sample. As expected, the test material did not appear to be very soluble in water.
- The pH readings stabilised for approximately five to six minutes.
- No water reactivity was observed.
- The pH results were 2.68 ± 0.08 (CV = 2.80 %) for sample one and 2.75 ± 0.04 (CV = 1.52 %) for sample two.
- The overall mean pH of 1 % w/v test solutions was 2.71 ± 0.07 (CV = 2.45 %).
- The test solution temperatures ranged from 22.3 to 22.6 °C throughout the testing.
- Table 5 (attached) displays the pH data for the study.
Applicant's summary and conclusion
- Conclusions:
- The overall mean pH of 1 % w/v test solutions was 2.71 ± 0.07 (CV = 2.45 %).
- Executive summary:
GUIDELINE
The investigation was performed in accordance withU.S. Environmental Protection Agency (1996) Product Properties Test Guidelines, OPPTS 830.7000 "pH" and MT 75.3 "Determination of pH Values".
METHODS
The test specified in this protocol was designed to determine the pH of the test substance using the electrometric method. Two separate 1 % w/v test samples were each analysed in triplicate.
RESULTS
The pH results were 2.68 ± 0.08 (CV = 2.80 %) for sample one and 2.75 ± 0.04 (CV = 1.52 %) for sample two.
CONCLUSION
The overall mean pH of 1 % w/v test solutions was 2.71 ± 0.07 (CV = 2.45 %).
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