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Diss Factsheets
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EC number: 228-602-0 | CAS number: 6303-30-6
- 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
pH
Administrative data
- Endpoint:
- acidity / alkalinity
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 2020
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
Cross-reference
- Reason / purpose for cross-reference:
- reference to same study
Reference
- Endpoint:
- pH
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 2020
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Reason / purpose for cross-reference:
- reference to same study
- GLP compliance:
- yes (incl. QA statement)
- Other quality assurance:
- ISO/IEC 17025 (General requirements for the competence of testing and calibration laboratories)
- Reagent:
- buffer solutions
- Key result
- pH value:
- 1.5
- Temp.:
- 20 °C
- Concentration:
- 10 g/L
- Remarks on result:
- other: value after 10 min, no drift.
- Conclusions:
- The pH of a 1% solution of diisobutyl phosphate in demineralized water was determined to be 1.5 by single rod glass electrode.
- Executive summary:
In a pH test according OECD guideline 122 the pH of a 1% solution of diisobutyl phosphate in demineralized water was determined by a single rod glass electrode. 1g of the test item was weighed in a graduated cylinder and diluted with 100 ml demineralized water. The mean of three measurements after 1, 2 and 10 minutes resulted in a pH of 1.5.
After 1 minute: 1.4
after 2 minutes: 1.5
after 10 minutes: 1.5
Result: 1.5
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 020
- Report date:
- 2020
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 122 (Determination of pH, Acidity and Alkalinity)
- GLP compliance:
- yes (incl. QA statement)
- Other quality assurance:
- ISO/IEC 17025 (General requirements for the competence of testing and calibration laboratories)
Test material
- Reference substance name:
- Diisobutyl hydrogen phosphate
- EC Number:
- 228-602-0
- EC Name:
- Diisobutyl hydrogen phosphate
- Cas Number:
- 6303-30-6
- Molecular formula:
- C8H19O4P
- IUPAC Name:
- bis(2-methylpropoxy)phosphinic acid
- Test material form:
- liquid
Constituent 1
Reagents
- Reagent:
- NaOH solution
Titration of acidity and alkalinity
- Details on titrant used:
- 1N NaOH-solution
Results and discussion
Acidity or alkalinity
- Key result
- Acidity or alkalinity:
- acidity
- Value:
- 1.32
Any other information on results incl. tables
The acidity calculated as H2SO4 is 23.3 %. This is equal to a pH of 1.3
Applicant's summary and conclusion
- Conclusions:
- The acidity of diisobutylphosphate calculated as H2SO4 is 23.3 %, equal to a pH of 1.3. this confirms the measurments by glass rod electrode.
- Executive summary:
The acidity of diisobutyl phosphate was determined in accordance to OECD Guideline 122 as the pH value by glass electrode is below 4.0. The titration was performed according to CIPAT MT 31: approx. 5 g of the test item were weighed in and titrated with 1N NaOH-solution using a potentiometric endpoint detection. During the titration the sample solution was murky but went clear. Two independent determinations were carried out. The acidity calculated as H2SO4 is 23.3 wt.-%, which corresponds to 1.32 pH.
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