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Diss Factsheets
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EC number: 700-163-4 | CAS number: -
- Life Cycle description
- Uses advised against
- Endpoint summary
- Appearance / physical state / colour
- Melting point / freezing point
- Boiling point
- Density
- Particle size distribution (Granulometry)
- Vapour pressure
- Partition coefficient
- Water solubility
- Solubility in organic solvents / fat solubility
- Surface tension
- Flash point
- Auto flammability
- Flammability
- Explosiveness
- Oxidising properties
- Oxidation reduction potential
- Stability in organic solvents and identity of relevant degradation products
- Storage stability and reactivity towards container material
- Stability: thermal, sunlight, metals
- pH
- Dissociation constant
- Viscosity
- Additional physico-chemical information
- Additional physico-chemical properties of nanomaterials
- Nanomaterial agglomeration / aggregation
- Nanomaterial crystalline phase
- Nanomaterial crystallite and grain size
- Nanomaterial aspect ratio / shape
- Nanomaterial specific surface area
- Nanomaterial Zeta potential
- Nanomaterial surface chemistry
- Nanomaterial dustiness
- Nanomaterial porosity
- Nanomaterial pour density
- Nanomaterial photocatalytic activity
- Nanomaterial radical formation potential
- Nanomaterial catalytic activity
- Endpoint summary
- Stability
- Biodegradation
- Bioaccumulation
- Transport and distribution
- Environmental data
- Additional information on environmental fate and behaviour
- Ecotoxicological Summary
- Aquatic toxicity
- Endpoint summary
- Short-term toxicity to fish
- Long-term toxicity to fish
- Short-term toxicity to aquatic invertebrates
- Long-term toxicity to aquatic invertebrates
- Toxicity to aquatic algae and cyanobacteria
- Toxicity to aquatic plants other than algae
- Toxicity to microorganisms
- Endocrine disrupter testing in aquatic vertebrates – in vivo
- Toxicity to other aquatic organisms
- Sediment toxicity
- Terrestrial toxicity
- Biological effects monitoring
- Biotransformation and kinetics
- Additional ecotoxological information
- Toxicological Summary
- Toxicokinetics, metabolism and distribution
- Acute Toxicity
- Irritation / corrosion
- Sensitisation
- Repeated dose toxicity
- Genetic toxicity
- Carcinogenicity
- Toxicity to reproduction
- Specific investigations
- Exposure related observations in humans
- Toxic effects on livestock and pets
- Additional toxicological data
![](https://poisoncentres.echa.europa.eu/o/diss-blank-theme/images/factsheets/A-REACH/factsheet/print_physical-and-chemical-properties.png)
pH
Administrative data
- Endpoint:
- pH
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 28/04/2009 to 05/08/2009
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: The measurements were conducted according to CIPAC methods, and under GLP. However, restrictions are proposed because calibration results are not provided.
Cross-referenceopen allclose all
- Reason / purpose for cross-reference:
- reference to same study
- Reason / purpose for cross-reference:
- reference to other study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 009
- Report date:
- 2009
Materials and methods
Test guidelineopen allclose all
- Qualifier:
- according to guideline
- Guideline:
- other: CIPAC MT 75.3 (pH)
- Qualifier:
- according to guideline
- Guideline:
- other: CIPAC MT 191 (acidity/alkalinity)
- GLP compliance:
- yes (incl. QA statement)
Test material
Constituent 1
Results and discussion
pH value
- pH value:
- 12.4
- Temp.:
- 21 °C
- Concentration:
- ca. 10 g/L
- Remarks on result:
- other: saturated solution
Any other information on results incl. tables
pH Value
pH value of Test Item in saturated aqueous solution (about 10 g/L)
Sample ID |
Equilibration Time [min] |
pH |
Temperature [°C] |
Mean pH |
P7 |
1 |
12.39 |
20.7 |
12.41 |
P8 |
1 |
12.42 |
20.8 |
Alkalinity
Titer of 0.1 M Hydrochloric Acid
Sample ID |
Weight of sodium carbonate [mg] |
Theoretical consumption [mL] |
Experimental consumption [mL] |
Titer |
Mean Titer |
1 |
78.51 |
14.815 |
14.035 |
1.0555 |
1.0572 |
2 |
84.3 |
15.907 |
15.030 |
1.0584 |
|
3 |
75.84 |
14.311 |
13.529 |
1.0578 |
Alkalinity expressed as NaOH [% w/w] (concentration of test solution: 3.7 g/L)
Sample ID |
Weight of test item [mg] |
Consumption of HCl [mL] |
Concentration of HCl [mol/L] |
Titer |
Alkalinity [%w/w] |
Mean Alkalinity [%w/w] |
1 |
0.37893 |
12.266 |
0.1 |
1.0572 |
13.6925 |
13.5997 |
2 |
0.38923 |
12.542 |
13.6301 |
|||
3 |
0.37433 |
11.926 |
13.4765 |
Applicant's summary and conclusion
- Conclusions:
- pH = 12.4 (saturated solution at 21°C)
Alkalinity = 13.6 %w/w NaOH (at 25°C)
This data can be relevant for classification regarding corrosive properties. - Executive summary:
The pH of a saturated solution (10 g/L) of the test substance in deionised water was measured according to CIPAC MT75.3 guideline, using a pH-meter and a glass electrode, under GLP. As the result was above 10, the free alkalinity was also determined, according to CIPAC MT191 guideline, on a dilute solution (3.7 g/L).
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.
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