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EC number: 217-199-7 | CAS number: 1772-25-4
- 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
Hydrolysis
Administrative data
Link to relevant study record(s)
- Endpoint:
- hydrolysis
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 2022.3.10-2022.07.27
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 111 (Hydrolysis as a Function of pH)
- GLP compliance:
- yes (incl. QA statement)
- Radiolabelling:
- no
- Analytical monitoring:
- yes
- Buffers:
- Citrate buffer pH 4 (50 mM):
23.02 g potassium dihydrogencitrate were dissolved in 1 L of water.
500 mL of this solution were mixed with 90 mL of 0.1 M sodium hydroxide and 410 mL of water.
The pH value of the buffer solution was determined to be 4.04.
Phosphate buffer pH 7 (50 mM):
13.61 g potassium dihydrogenphosphate were dissolved in 1 L of water.
500 mL of this solution were mixed with 296 mL of 0.1 M sodium hydroxide and 204 mL of water.
The pH value of the buffer solution was determined to be 7.00.
Borate buffer pH 9 (50 mM):
6.18 g boric acid were dissolved in 1 L of water.
500 mL of this solution were mixed with 213 mL of 0.1 M sodium hydroxide and 287 mL of water.
The pH value of the buffer solution was determined to be 9.04. - Details on test conditions:
- General Information
Photolytic interference was avoided by shaking in the dark.
Buffer solutions were sterilized by ultra-filtration.
All used glass ware were sterilized with hot steam for half an hour.
Sterile water, ultra-pure grade was used.
The temperatures were kept and measured with a resolution of ± 0.2 °C.
Preliminary Test (Tier 1)
A preliminary test was performed at 50 ± 0.5 °C at three pH values 4, 7 and 9. Each sample was prepared in
triplicate and was measured twice for each pH value and at 50 °C in order to be able to estimate whether less
than 10 % of hydrolysis is observed after 120 hours or not.
Samples were taken at t0 and after 5 days (t5d) and prepared as described in chapter 3.7. The samples t0 were
analysed directly after preparation and subsequent dilution. The samples t5d were measured directly after
dilution. - Duration:
- 120 h
- pH:
- 9
- Temp.:
- 50 °C
- Initial conc. measured:
- >= 1.58 - <= 1.8 mg/L
- Duration:
- 120 h
- pH:
- 7
- Temp.:
- 50 °C
- Initial conc. measured:
- >= 1.55 - <= 1.74 mg/L
- Duration:
- 120 h
- pH:
- 4
- Temp.:
- 50 °C
- Initial conc. measured:
- >= 1.6 - <= 1.82 mg/L
- Number of replicates:
- 3
- Positive controls:
- no
- Negative controls:
- no
- Preliminary study:
- The hydrolysis of the test item is negligible at pH 4, pH 7 and pH 9. The degradation of the test item was less than 10 % at pH 4, pH 7 and pH 9 at 50 °C over a period of 120 hours.
- Transformation products:
- no
- pH:
- 9
- Temp.:
- 50 °C
- DT50:
- > 1 yr
- Remarks on result:
- hydrolytically stable based on preliminary test
- Remarks:
- The degradation of the test item was less than 10 % over a period of 120 hours.
- pH:
- 7
- Temp.:
- 50 °C
- DT50:
- > 1 yr
- Remarks on result:
- hydrolytically stable based on preliminary test
- Remarks:
- The degradation of the test item was less than 10 % over a period of 120 hours.
- pH:
- 4
- Temp.:
- 50 °C
- DT50:
- > 1 yr
- Remarks on result:
- hydrolytically stable based on preliminary test
- Remarks:
- The degradation of the test item was less than 10 % over a period of 120 hours.
- Validity criteria fulfilled:
- yes
- Conclusions:
- The hydrolysis of the test item is negligible at pH 4, pH 7 and pH 9. The degradation of the test item was less than 10 % at pH 4, pH 7 and pH 9 at 50 °C over a period of 120 hours. Therefore, the corresponding half-life
time can be estimated to be longer than one year at 25 °C. - Executive summary:
Study Objective
The aim of this study was the determination of the abiotic degradation of Hexane-1,3,6-Tricarbonitrile as a
function of pH in aqueous solution. The test was performed according to OECD guideline 111.Analytical Procedure
In brief, the test item was shaken in aqueous buffer for 5 days at three different pH-values at 50°C.Result and Conclusion
The hydrolysis of the test item is negligible at pH 4, pH 7 and pH 9. The degradation of the test item was less
than 10 % at pH 4, pH 7 and pH 9 at 50 °C over a period of 120 hours. Therefore, the corresponding half-life
time can be estimated to be longer than one year at 25 °C.
Reference
Description of key information
Key value for chemical safety assessment
- Half-life for hydrolysis:
- 1 yr
- at the temperature of:
- 25 °C
Additional information
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